Compressor shell disassembling method and compressor shell disassembling system

Abstract

The invention provides a compressor shell disassembling method and a compressor shell disassembling system, and belongs to the technical field of refrigeration equipment production. The method comprises the steps that the resistance value R1 of a shell in the compressor shell and the resistance value R2 of welding flux are obtained; determining the current intensity I and the conduction time t according to the difference between the R1 and the R2; electrifying the compressor shell according to the determined current intensity I and the electrifying time t; and the welding seam is heated through current, so that the welding flux is melted, and the shell is separated. According to the method, the welding seam can be fused, the long-time-consuming mechanical cutting or heat treatment process in a traditional disassembling method is not needed, the disassembling efficiency is improved, and the labor intensity is reduced; and other parts of the compressor shell cannot be damaged in the disassembling process, so that the shell is convenient to reuse or recycle.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration equipment production, and in particular to a compressor shell disassembly method and a compressor shell disassembly system. Background Art

[0002] Disassembly of compressor casings is a common but challenging task during the maintenance and scrapping of refrigeration equipment. Traditional disassembly methods usually rely on mechanical tools or heat treatment methods to disassemble the compressor casing. These methods are not only time-consuming and inefficient, but also easily cause damage to the casing during the disassembly process, affecting its subsequent reuse. In addition, improper disassembly techniques may also cause environmental pollution, especially in the case of improper handling, the coolant and lubricating oil in the compressor may leak and pollute the environment. With the increasingly stringent environmental regulations and the increasing demand for sustainable development, the limitations of traditional compressor casing disassembly methods have become more obvious.

[0003] For example, the prior art CN104550202B discloses a compressor shell opening device and its control method. The device uses the detection signal of the laser rangefinder to control the shell opening tool to automatically follow the shape of the compressor shell in the annular direction where the compressor annular weld is located; the camera is used to obtain the image information of the compressor annular weld, and the height of the compressor annular weld is determined by image recognition, and then the measurement and control module outputs a control signal to control the shell opening tool to automatically find the cutting point on the compressor shell. Although the device can realize the intelligent disassembly of the compressor shell. However, the device still uses a tool to cut the compressor shell, and it is difficult to avoid damage to the compressor shell during operation.

[0004] Therefore, it is necessary to improve the existing method for disassembling the compressor casing to overcome the defects of the prior art. Summary of the invention

[0005] In order to overcome the problems existing in the related art, one of the objects of the present invention is to provide a compressor casing disassembly method, which can melt the weld and does not require the time-consuming mechanical cutting or heat treatment process in the traditional disassembly method, thereby improving the disassembly efficiency and reducing the labor intensity; and the disassembly process will not damage other parts of the compressor casing, thereby facilitating the reuse or recycling of the casing.

[0006] A compressor casing disassembly method, comprising:

[0007] Obtain the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder;

[0008] According to the difference between R1 and R2, determine the current intensity I and the power-on time t;

[0009] According to the determined current intensity I and power-on time t, the compressor housing is energized;

[0010] The welding seam is heated by electric current, so that the solder melts and the shell is separated.

[0011] The disassembly process of this method is as follows: In the preparation stage of compressor housing disassembly, a dedicated high-precision resistance tester is used to measure the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder. This step is crucial because accurate resistance value measurement is the basis for determining the power-on parameters later. Then, according to the difference between R1 and R2 measured, the appropriate current intensity I and power-on time t are designed. Since the resistance value of the solder is usually different from that of the shell, this resistance difference can be used to accurately control the heating process. Through accurate calculation, it can be ensured that only the metal in the weld area is heated to the melting point without affecting other parts of the shell. Then, according to the determined current intensity I and power-on time t, the compressor housing is energized. During the power-on process, current will flow through the weld area, generating enough heat to melt the solder. At this time, it is necessary to pay close attention to the heating process to ensure that everything is carried out according to the preset parameters. Finally, when the solder is completely melted, disconnect the power supply and wait for the weld to cool. As the weld cools and solidifies, the connection between the shells will become fragile, and the shells can be easily separated. At this point, the disassembly process is complete and a complete and undamaged compressor housing section is available.

[0012] In a preferred technical solution of the present invention, the determination of the current intensity I and the power-on time t according to the difference between R1 and R2 includes:

[0013] Determining a target temperature T according to material properties of a shell and solder in a compressor housing; at the target temperature, the solder is melted but the shell is not melted;

[0014] Calculate the total energy required to reach the target temperature based on the target temperature T and material properties;

[0015] According to the required total energy and the resistance values ​​R1 and R2, the power distribution is performed on the shell and the solder;

[0016] The current intensity of the shell and the solder is determined according to the allocated power and the resistance values ​​R1 and R2.

[0017] The total energy required is calculated based on the target temperature T and material properties, and the power is further allocated to the shell and solder to optimize the energy efficiency. By properly allocating power, it is possible to ensure that the weld part obtains enough heat to melt, while avoiding overheating of the shell part, maintaining the integrity of the non-destructive part of the compressor, thereby further improving the safety and efficiency of disassembly.

[0018] In a preferred technical solution of the present invention, after determining the current intensity of the shell and the solder, the method further includes:

[0019] obtaining a power supply voltage in a circuit for energizing a compressor housing;

[0020] Determine the power-on time based on the determined total energy, current intensity and power supply voltage;

[0021] Among them, the formula for determining the power-on time is as follows:

[0022] t = P / (U * I);

[0023] Among them, t is the power-on time, the unit is s; P is the total energy, the unit is J; U is the power supply voltage, the unit is V; I is the current intensity, the unit is A.

[0024] This embodiment provides a method for determining the power-on time, which is implemented when the power supply voltage is clear. By accurately controlling the power-on time, the damage to the shell of the compressor housing caused by current heating can be reduced.

[0025] In a preferred technical solution of the present invention, after determining the current intensity of the shell and the solder, the method further includes:

[0026] Determine the power-on time according to the determined total energy and current intensity;

[0027] Among them, the formula for determining the power-on time is as follows:

[0028] t=P / (I 2 *R);

[0029] Among them, t is the power-on time, the unit is s; P is the total energy, the unit is J; I is the current intensity, the unit is A; I is the total resistance of the entire circuit, the unit is Ω.

[0030] This embodiment provides another method for determining the power-on time, which is implemented without knowing the power supply voltage. The accuracy of the power-on time during the disassembly process is ensured through precise calculation, avoiding problems such as incomplete disassembly or shell damage caused by too long or too short power-on time.

[0031] In a preferred technical solution of the present invention, the step of obtaining the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder includes:

[0032] Before obtaining the resistance value R1 and the resistance value R2, the shell and the solder are cleaned and dried;

[0033] Take multiple measurements of the shell and solder, or multiple resistance values;

[0034] The multiple resistance values ​​obtained are averaged to obtain the average resistance value of the shell and the solder;

[0035] The average values ​​of the obtained resistance values ​​are taken as the resistance values ​​R1 and R2.

[0036] Cleaning and drying the shell and solder can remove dirt, oxides and other impurities on the surface, thereby reducing measurement errors. By taking multiple measurements and averaging them, the random error of a single measurement can be further eliminated, thus improving the accuracy of resistance measurement.

[0037] In a preferred technical solution of the present invention, the method of heating the welding seam with electric current to melt the solder and separate the shells includes:

[0038] After the solder melts, disconnect the power supply;

[0039] After the solder cools down, separate the soldered shells.

[0040] Disconnecting the power supply in time after the solder melts can avoid problems such as overheating or short circuit caused by long-term power supply, thereby ensuring the safety of the disassembly process. Disconnecting the power supply and waiting for the solder to cool before performing the separation operation can prevent the solder from adhering to the shell due to overheating, causing damage to the shell during the separation process.

[0041] A second object of the present invention is to provide a compressor casing disassembly system for implementing the compressor casing disassembly method as described above.

[0042] In a preferred technical solution of the present invention, the disassembly system comprises:

[0043] A power supply, a current controller, a connecting electrode and a central controller, wherein the output end of the power supply is electrically connected to the connecting electrode, and the current controller is arranged between the power supply and the connecting electrode;

[0044] The central controller is electrically connected to the power supply and the current controller.

[0045] In a preferred technical solution of the present invention, a heating element and a temperature sensor are also included, and the heating element and the temperature sensor are both electrically connected to the central controller;

[0046] The heating element is used to heat the solder of the compressor housing, and the temperature sensor is used to monitor the temperature of the shell and the solder of the compressor housing.

[0047] The system can achieve precise control of the disassembly process through the central controller to precisely control the power supply, current controller, heating element and temperature sensor, including key parameters such as current intensity, power-on time and heating temperature. During the disassembly process, the power supply is disconnected in time after the solder melts, and the shell is separated after the solder cools down, avoiding safety hazards caused by long-term power supply or overheating. At the same time, the monitoring of the temperature sensor also ensures that the temperature control during the disassembly process is within a safe range.

[0048] The beneficial effects of the present invention are:

[0049] The present invention provides a compressor housing disassembly method, the method comprising: obtaining the resistance value R1 of the housing in the compressor housing and the resistance value R2 of the solder, and accurate resistance value measurement is the basis for the subsequent determination of the power-on parameters. According to the difference between R1 and R2, the current intensity I and the power-on time t are determined; according to the determined current intensity I and the power-on time t, the compressor housing is powered on, and by determining the current intensity I and the power-on time t, it can be ensured that only the metal in the weld area is heated to the melting point during the subsequent power-on process, and the other parts of the housing will not be affected. The weld is heated by electric current to melt the solder and realize the separation of the housing. In practical applications, the method uses the resistance difference for selective heating, so that when the current flows through the housing and the weld of the compressor housing, different heat can be generated at different positions, the heat at the weld can melt the solder, and the heat in the housing will not melt the housing, and this heating and dissolving method does not require the time-consuming mechanical cutting or heat treatment process in the traditional disassembly method, which not only significantly improves the disassembly efficiency, but also reduces the labor intensity. The traditional disassembly method may cause chemical leakage due to improper operation, causing environmental pollution. The method of the present application can avoid this risk because the entire disassembly process is carried out in a controlled environment, and the melting of the solder and the separation of the shell will not produce harmful substances. In addition, the use of electric current for heating has higher safety, can reduce the risk of fire and explosion, and also reduce the health risk of operators. And because the method of the present invention does not damage other parts of the compressor shell, the disassembled shell part can be more easily reused or recycled.

[0050] The present application also provides a compressor housing disassembly system for implementing the above compressor housing disassembly method, which can utilize the difference in resistance to heat the shell and weld of the compressor housing differently, so that the solder melts and the shell does not melt, and the compressor housing can be decomposed after the solder melts. The system can effectively improve the disassembly efficiency of the compressor housing, and can realize the lossless recycling of the housing, reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1is a flow chart of a compressor casing disassembly method provided in an embodiment of the present invention;

[0052] Figure 2 is a flow chart of how to determine the current intensity I and the power-on time t provided in an embodiment of the present invention;

[0053] Figure 3 It is a flow chart of applying power to melt the solder and realize the separation of the shell provided in an embodiment of the present invention;

[0054] Figure 4 It is a connection relationship diagram of various components of the compressor casing disassembly system provided in an embodiment of the present invention.

[0055] Reference numerals:

[0056] 1. Central controller; 2. Power supply; 3. Current controller; 4. Connecting electrodes; 5. Temperature sensor; 6. Heating element. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0058] Traditional methods of disassembling compressor shells usually rely on mechanical tools or heat treatment methods to disassemble the compressor shell. These methods are not only time-consuming and inefficient, but also easily cause damage to the shell during the disassembly process, affecting its subsequent reuse. For example, the prior art discloses a compressor shell opening device and a control method thereof. Although the device can realize intelligent disassembly of the compressor shell, it still uses a cutter to cut the compressor shell, and it is difficult to avoid damage to the compressor shell during operation.

[0059] Based on this, the present application provides a method for disassembling a compressor casing.

[0060] Example 1

[0061] like Figure 1-Figure 3 As shown, this embodiment provides a compressor casing disassembly method, comprising:

[0062] S100, obtaining a resistance value R1 of a shell in a compressor housing and a resistance value R2 of a solder;

[0063] S200, determining the current intensity I and the power-on time t according to the difference between R1 and R2;

[0064] In one embodiment, the current intensity I and the power-on time t are as follows: Based on the difference between R1 and R2, the distribution characteristics of the current in the shell and the solder, and the relationship between the heating efficiency and the energy consumption are analyzed.

[0065] Specifically, based on the resistance difference, target heating temperature (i.e. solder melting point), shell tolerable temperature and other conditions, the minimum current intensity I and power-on time t required to melt the solder are calculated using thermodynamics and circuit principles. This ensures that under these conditions, the solder can be fully melted while the shell temperature remains within a safe range.

[0066] More specifically, determining the current intensity I and the power-on time t according to the difference between R1 and R2 includes:

[0067] S210. Determine a target temperature T according to material properties of a shell and solder in a compressor housing; wherein at the target temperature, the solder is melted but the shell is not melted, so as to ensure integrity of the shell.

[0068] In this step, the material of the compressor needs to be analyzed. For example, the shell material (such as stainless steel, aluminum alloy, etc.) and solder (such as tin-based solder, silver-based solder, etc.) of the compressor housing are analyzed in detail for their physical and chemical properties, especially their melting points. Based on the analysis results, a target temperature T is set. The temperature must be sufficient to ensure that the solder can be completely melted (usually a certain range higher than the melting point of the solder to ensure good wetting and connection), while the shell material remains solid to avoid thermal damage. For example, if the melting point of the solder is 220°C and the maximum temperature that the shell material can withstand is 300°C, the target temperature T can be set to 250°C.

[0069] S220, calculating the total energy required to reach the target temperature according to the target temperature T and material properties;

[0070] In this step, the thermal conduction model of the shell-solder system can be established using thermodynamic principles. Factors such as the thermal conductivity, specific heat capacity, density, and geometric shape of the material need to be considered during modeling. The total energy Ptotal required to reach the target temperature is calculated based on the difference between the target temperature T and the initial temperature, the system heat loss, and the heating efficiency.

[0071] S230, distributing working power to the shell and the solder according to the required total energy and the resistance value R1 and the resistance value R2;

[0072] In this step, the resistance value R1 of the shell part and the equivalent resistance value R2 of the solder area are measured respectively. According to the ratio of the resistance values ​​R1 and R2, and the demand for heat distribution during the welding process, the total energy Ptotal is reasonably distributed to the shell (P1) and the solder (P2) to ensure that the solder area obtains enough heat to melt and the shell does not overheat. For example, if R1:R2=2:1, P1:P2=1:2 may be distributed to concentrate the heat on the solder area.

[0073] S240 , determining the current intensity of the housing and the solder according to the allocated power and the resistance values ​​R1 and R2 .

[0074] According to the allocated power P1, P2 and the corresponding resistance values ​​R1, R2, using Ohm's law I = P / R, the current intensities I1 and I2 flowing through the shell and solder are calculated respectively. Subsequent verification is required to ensure that the calculated current intensity does not exceed the maximum current density that the shell material and solder can withstand, so as to prevent material damage caused by electrothermal effect.

[0075] S300, energizing the compressor housing according to the determined current intensity I and energizing time t;

[0076] During actual power-on, a programmable power supply or a current controller is used to power on the compressor housing according to the set current intensity I.

[0077] S400, using electric current to heat the welding seam so that the solder melts, thereby achieving separation of the shell.

[0078] When current passes through the shell and solder, due to the difference in resistance, the solder area will generate more heat, quickly reach the melting point and melt. After the solder melts, the shell and solder can be easily separated using appropriate tools or methods (such as gently prying, using a special separator, etc.).

[0079] The disassembly process of the compressor housing by implementing this method is as follows: In the preparation stage of the compressor housing disassembly, a dedicated high-precision resistance tester is used to measure the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder. This step is crucial because accurate resistance value measurement is the basis for the subsequent determination of the power-on parameters. Then, according to the difference between R1 and R2 measured, the appropriate current intensity I and power-on time t are designed. Since the resistance value of the solder is usually different from that of the shell, this resistance difference can be used to accurately control the heating process. Through accurate calculation, it can be ensured that only the metal in the weld area is heated to the melting point without affecting other parts of the shell. Then, according to the determined current intensity I and power-on time t, the compressor housing is energized. During the power-on process, the current will flow through the weld area, generating enough heat to melt the solder. At this time, it is necessary to pay close attention to the heating process to ensure that everything is carried out according to the preset parameters. Finally, when the solder is completely melted, the power supply is disconnected and the weld is allowed to cool. As the weld cools and solidifies, the connection between the shells will become fragile, and the shells can be easily separated. At this point, the disassembly process is complete and a complete and undamaged compressor housing section is available.

[0080] The total energy required is calculated based on the target temperature T and material properties, and the power is further allocated to the shell and solder to optimize the energy efficiency. By properly allocating power, it is possible to ensure that the weld part obtains enough heat to melt, while avoiding overheating of the shell part, maintaining the integrity of the non-destructive part of the compressor, thereby further improving the safety and efficiency of disassembly.

[0081] In this embodiment, after determining the current intensity of the shell and the solder, the method further includes:

[0082] obtaining a power supply voltage in a circuit for energizing a compressor housing;

[0083] S250, determining the power-on time according to the determined total energy, current intensity, and power supply voltage;

[0084] Among them, the formula for determining the power-on time is as follows:

[0085] t = P / (U * I);

[0086] Among them, t is the power-on time, the unit is s; P is the total energy, the unit is J; U is the power supply voltage, the unit is V; I is the current intensity, the unit is A.

[0087] Substitute the known total energy P, power supply voltage U and current intensity I into the formula to calculate the power-on time t. Then check the calculated power-on time to ensure that it meets the disassembly requirements and does not cause overheating of the housing. If necessary, fine-tune the parameters according to the actual situation.

[0088] This embodiment provides a method for determining the power-on time, which is implemented when the power supply voltage is clear. By accurately controlling the power-on time, the damage to the shell of the compressor housing caused by current heating can be reduced.

[0089] The process of determining the power-on time in this embodiment is as follows:

[0090] First, when calculating the current intensity and power-on time for the air-conditioning compressor housing to be separated from the weld, we first need to calculate the heat Q required to make the weld part reach the target temperature. The calculation process is as follows:

[0091] (1) Calculate the total resistance and current intensity. According to Ohm's law, the current intensity I can be calculated by the following formula: I = V / R, where I is the current intensity, V is the power supply voltage, and R is the total resistance.

[0092] If R1 and R2 are connected in series, the total resistance R total For: R total =R1+R2; R total Substituting into Ohm's law formula, we obtain the current intensity I: I=V / (R1+R2).

[0093] If R1 and R2 are connected in parallel, the total resistance R total For: R total =1 / (1 / R1+1 / R2); R total Substituting into Ohm's law formula, we get the current intensity I: I = V / (1 / (1 / R1+1 / R2))

[0094] (2) Calculate the required energy: Calculate the mass of the weld, m = ρ * V, the required energy Q = m * C * (T1-T2), T1 is the target temperature, T2 is the ambient temperature;

[0095] (3) Calculate the power-on time, which is usually determined by design parameters or experimental data. Power P = IV, and time t is calculated by P = Q / t.

[0096] Example 2

[0097] This embodiment provides a method for determining the power-on time that is different from that of the first embodiment.

[0098] like Figure 1-Figure 3 As shown, specifically, after determining the current intensity of the shell and the solder, it also includes:

[0099] Determine the power-on time according to the determined total energy and current intensity;

[0100] Among them, the formula for determining the power-on time is as follows:

[0101] t=P / (I2 *R);

[0102] Among them, t is the power-on time, the unit is s; P is the total energy, the unit is J; I is the current intensity, the unit is A; I is the total resistance of the entire circuit, the unit is Ω.

[0103] This embodiment provides another method for determining the power-on time, which is implemented without knowing the power supply voltage. The accuracy of the power-on time during the disassembly process is ensured through precise calculation, avoiding problems such as incomplete disassembly or shell damage caused by too long or too short power-on time.

[0104] In actual applications, the known total energy P, current intensity I and total circuit resistance R are substituted into the formula to calculate the power-on time t. The calculated power-on time is verified to ensure that it meets the disassembly process requirements and does not cause overheating or damage to the shell. If necessary, the parameters can be fine-tuned according to actual conditions. Specifically, the calculated power-on time t can be set on the disassembly equipment or power controller. Start the disassembly process to ensure that the current passes through the shell and solder according to the set intensity I and power-on time t to achieve precise control.

[0105] Example 3

[0106] This embodiment is improved on the basis of embodiment 1.

[0107] like Figure 1-Figure 3 As shown, in this embodiment, obtaining the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder includes:

[0108] Before obtaining the resistance values ​​R1 and R2, clean and dry the housing and solder; thoroughly clean the housing and solder to remove dirt, oxides and other impurities on the surface. After cleaning, dry the housing and solder to ensure that there is no moisture residue on the surface to avoid the influence of moisture on the resistance value measurement.

[0109] The shell and solder are measured multiple times, or the resistance values ​​are measured multiple times; specifically, a suitable resistance measuring instrument is used to measure the resistance values ​​of the cleaned and dried shell and solder multiple times. Multiple measurements can reduce the random error of a single measurement and improve the reliability of the measurement. The resistance measuring instrument can be a multimeter.

[0110] The multiple resistance values ​​obtained are averaged to obtain the average resistance value of the shell and the solder;

[0111] The average values ​​of the obtained resistance values ​​are taken as the resistance values ​​R1 and R2.

[0112] In the method for obtaining the resistance value R1 and the resistance value R2 provided in this embodiment, the housing and the solder are cleaned and dried to remove dirt, oxides and other impurities on the surface, thereby reducing the measurement error. By measuring multiple times and taking the average value, the random error of a single measurement can be further eliminated, thereby improving the accuracy of the resistance value measurement.

[0113] Example 4

[0114] This embodiment is improved on the basis of embodiment 1.

[0115] like Figure 1-Figure 3 As shown, in this embodiment, the method of heating the welding seam with electric current to melt the solder and separate the shell includes:

[0116] S410, after the solder melts, disconnect the power supply;

[0117] S420, after waiting for the solder to cool down, separate the shells welded by the solder.

[0118] Disconnecting the power supply in time after the solder melts can avoid problems such as overheating or short circuits caused by long-term power supply, thereby ensuring the safety of the disassembly process. Waiting for the solder to cool down before separating after disconnecting the power supply can prevent the solder from adhering to the shell due to overheating, causing damage to the shell during the separation process. After the solder has completely cooled, the shell can be easily and non-destructively separated because the solder has cooled and lost its viscosity.

[0119] Example 5

[0120] like Figure 1-Figure 4 As shown, this embodiment provides a compressor casing disassembly system for implementing the compressor casing disassembly method as described above.

[0121] In this embodiment, the disassembly system includes:

[0122] A power source 2, a current controller 3, a connecting electrode 4 and a central controller 1, wherein the output end of the power source 2 is electrically connected to the connecting electrode 4, and the current controller 3 is arranged between the power source 2 and the connecting electrode 4;

[0123] The central controller 1 is electrically connected to the power supply 2 and the current controller 3 .

[0124] The power supply 2 provides the required electric energy for the entire disassembly system. The output end of the power supply 2 is connected to the connecting electrode 4 to provide power support for the heating element 6.

[0125] Specifically, it also includes a heating element 6 and a temperature sensor 5, and the heating element 6 and the temperature sensor 5 are both electrically connected to the central controller 1;

[0126] The heating element 6 is used to heat the solder of the compressor housing, and the temperature sensor 5 is used to monitor the temperature of the shell and the solder of the compressor housing.

[0127] The current controller 3 is arranged between the power supply 2 and the connecting electrode 4, and is used to control the current intensity and power-on time passing through the connecting electrode 4 to ensure that the heating process meets the predetermined requirements. The connecting electrode 4 contacts the weld of the compressor housing and transmits electrical energy to the solder, causing it to heat and melt.

[0128] The system can achieve precise control of the disassembly process through the precise control of the power supply 2, the current controller 3, the heating element 6 and the temperature sensor 5 by the central controller 1, wherein the control process includes key parameters such as current intensity, power-on time, and heating temperature. During the disassembly process, the power supply 2 is disconnected in time after the solder melts, and the shell is separated after the solder cools down, avoiding safety hazards caused by long-term power-on or overheating. At the same time, the monitoring of the temperature sensor 5 also ensures that the temperature control during the disassembly process is within a safe range.

[0129] As the core component of the system, the central controller 1 is electrically connected to the power supply 2, current controller 3, heating element 6, temperature sensor 5 and other components, and is responsible for the control, monitoring and coordination of the entire disassembly process. Under the control of the central controller 1, the heating element 6 is used to assist in heating the solder of the compressor housing, so that it gradually melts and creates conditions for the shell separation. The temperature sensor 5 is used to monitor the temperature of the shell and solder of the compressor housing in real time, and feed back the temperature data to the central controller 1 so as to adjust the heating power and power-on time in time to ensure the safety and efficiency of the disassembly process.

[0130] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0131] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0132] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0133] 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 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 disassembling a compressor casing, characterized in that: include: Obtain the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder; According to the difference between R1 and R2, determine the current intensity I and the power-on time t; According to the determined current intensity I and power-on time t, the compressor housing is energized; The welding seam is heated by electric current, so that the solder melts and the shell is separated.

2. The compressor casing disassembly method according to claim 1, characterized in that: Determining the current intensity I and the power-on time t according to the difference between R1 and R2 includes: Determining a target temperature T according to material properties of a shell and solder in a compressor housing; at the target temperature, the solder is melted but the shell is not melted; Calculate the total energy required to reach the target temperature based on the target temperature T and material properties; According to the required total energy and the resistance values ​​R1 and R2, the power distribution is performed on the shell and the solder; The current intensity of the shell and the solder is determined according to the allocated power and the resistance values ​​R1 and R2.

3. The compressor casing disassembly method according to claim 2, characterized in that: After determining the current intensity of the shell and the solder, the method further includes: obtaining a power supply voltage in a circuit for energizing a compressor housing; Determine the power-on time based on the determined total energy, current intensity and power supply voltage; Among them, the formula for determining the power-on time is as follows: t = Q / (U * I); Among them, t is the power-on time, the unit is s; Q is the total energy, the unit is J; U is the power supply voltage, the unit is V; I is the current intensity, the unit is A.

4. The compressor casing disassembly method according to claim 2, characterized in that: After determining the current intensity of the shell and the solder, the method further includes: Determine the power-on time according to the determined total energy and current intensity; Among them, the formula for determining the power-on time is as follows: t=Q / (I 2 *R); Among them, t is the power-on time, the unit is s; Q is the total energy, the unit is J; I is the current intensity, the unit is A; I is the total resistance of the entire circuit, the unit is Ω.

5. The compressor casing disassembly method according to any one of claims 1 to 4, characterized in that: The step of obtaining the resistance value R1 of the shell in the compressor housing and the resistance value R2 of the solder includes: Before obtaining the resistance value R1 and the resistance value R2, the shell and the solder are cleaned and dried; Take multiple measurements of the shell and solder, or multiple resistance values; The multiple resistance values ​​obtained are averaged to obtain the average resistance value of the shell and the solder; The average values ​​of the obtained resistance values ​​are taken as the resistance values ​​R1 and R2.

6. The compressor casing disassembly method according to any one of claims 1 to 4, characterized in that: The method of heating the welding seam by electric current to melt the solder and separate the shells comprises: After the solder melts, disconnect the power supply; After the solder cools down, separate the soldered shells.

7. A compressor casing disassembly system, characterized in that: Used to implement the compressor casing disassembly method as described in any one of claims 1-7.

8. The compressor casing disassembly system according to claim 7, characterized in that: The disassembly system comprises: A power supply, a current controller, a connecting electrode and a central controller, wherein the output end of the power supply is electrically connected to the connecting electrode, and the current controller is arranged between the power supply and the connecting electrode; The central controller is electrically connected to the power supply and the current controller.

9. The compressor casing disassembly system according to claim 8, characterized in that: It also includes a heating element and a temperature sensor, wherein the heating element and the temperature sensor are both electrically connected to the central controller; The heating element is used to heat the solder of the compressor housing, and the temperature sensor is used to monitor the temperature of the shell and the solder of the compressor housing.

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