A compressor starting test device

Abstract

The utility model discloses a kind of compressor starting test device, including compressor and multiplex controller, the lower end of compressor is provided with inclined table, one end of compressor is connected with one end of evaporator outlet control valve, another end of evaporator outlet control valve is connected with one end of evaporator group, another end of evaporator group is connected with one end of evaporator inlet control valve, evaporator inlet control valve is connected with one end of refrigerant control valve, another end of refrigerant control valve is connected with refrigerant machine;Another end of compressor is connected with one end of condenser control valve, another end of condenser control valve is connected with one end of condenser, another end of condenser is connected with one end of throttling control valve, one end of throttling control valve is connected with solenoid valve and capillary tube. Can simulate the starting process of compressor, make the evaporator and condenser volume of this system can change, throttling mode can be selected, more close to actual refrigeration system, can accurately realize the state of inclined test in the process of testing starting.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, specifically relating to a compressor start-up test device. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the production and application of refrigerator compressors, their ability to start under low voltage conditions is a key performance indicator. This is because, in actual use, the power supply connected to the compressor may experience low voltage, which can easily lead to difficulty in starting the compressor and thus affect the normal operation of the refrigerator. Therefore, testing the compressor's low-voltage starting capability is crucial.

[0004] Existing testing equipment and methods have several shortcomings that make it difficult to meet the needs of accurate testing. Specifically: First, the internal volume of existing testing equipment differs significantly from that of actual refrigeration appliances. As the types of refrigeration appliances continue to increase, the range of their internal volume variations is also expanding, and the performance gap between small-capacity and large-capacity compressors is also widening. However, most existing testing equipment uses a fixed internal volume design, causing the rate of change in compressor suction and discharge during testing to be inconsistent with actual operating conditions. This results in a significant deviation between the single-unit test results and the compressor's performance in an actual refrigeration chamber, affecting the accuracy of the test.

[0005] Secondly, the throttling methods of existing testing devices are incompatible with actual refrigeration appliances. Actual refrigeration appliances commonly use capillary tubes for throttling, and the capillary tubes used in different types and manufacturers vary in design parameters such as length and diameter. Existing start-up tests typically use throttling valves or solenoid valves as throttling components. While these methods are meaningful for comparing the start-up performance of different compressors, their incompatibility with actual throttling methods and parameters leads to discrepancies between the start-up voltage obtained from single-unit tests and the compressor's start-up voltage within the actual refrigeration unit. Furthermore, during compressor operation, the compressor core vibrates during start-up or shutdown, which can severely cause compressor knocking noises. Therefore, testing for this phenomenon is crucial. While existing technologies include schemes and systems for automatically detecting knocking noises under load in tilted states, these systems also suffer from inconsistencies in internal volume compared to actual refrigeration appliances and the lack of capillary tube throttling, resulting in significant discrepancies between test results and actual conditions, making it impossible to accurately assess the risk of compressor knocking noises. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a compressor start-up test device that can simulate the compressor start-up process, allowing the evaporator and condenser volumes of the system to be varied and the throttling method to be selectable, thus more closely resembling an actual refrigeration system. During the start-up test, the tilt test state can be accurately achieved. To achieve the above objectives, the present invention adopts the following technical solution: A compressor start-up test device includes a compressor and a multi-way controller. An inclined platform is provided at the lower end of the compressor. One end of the compressor is connected to one end of an evaporator outlet control valve, and the other end of the evaporator outlet control valve is connected to one end of an evaporator assembly. The other end of the evaporator assembly is connected to one end of an evaporator inlet control valve, which is connected to one end of a refrigerant control valve. The other end of the refrigerant control valve is connected to a refrigerant compressor. The other end of the compressor is connected to one end of a condenser control valve, which is connected to one end of a condenser. The other end of the condenser is connected to one end of a throttling control valve, which is connected to a solenoid valve and a capillary tube.

[0007] As a further technical solution, the lower end of the compressor is fixed on an inclined platform, and the angle of the compressor is adjusted by driving the compressor through the inclined platform; a vibration sensor is installed inside the inclined platform.

[0008] As a further technical solution, one end of the evaporator is connected to port 1 of the evaporator outlet valve, and port 1 of the evaporator outlet valve is connected to one end of the first evaporator of the evaporator group.

[0009] As a further technical solution, port 2 of the evaporator outlet valve is connected to one end of the second evaporator of the evaporator group, the other end of the first evaporator is connected to port 1 of the evaporator inlet control valve, and the other end of the second evaporator is connected to port 2 of the evaporator inlet control valve.

[0010] As a further technical solution, the No. 1 port of the refrigerant control valve is connected to the refrigerant compressor, and one end of the refrigerant control valve is connected to the solenoid valve and the capillary tube.

[0011] As a further technical solution, the other end of the compressor is connected to the condenser control valve through a pipeline, the No. 1 port of the condenser control valve is connected to one end of the condenser, and the No. 2 port of the condenser control valve is connected to the gas storage tank.

[0012] As a further technical solution, the other end of the condenser is connected to the throttling control valve through a pipe, and the No. 1 port of the throttling control valve is connected to one end of the solenoid valve.

[0013] As a further technical solution, the No. 2 port of the throttling control valve is connected to the capillary tube, and the interface of the capillary tube adopts a quick-connect connector structure.

[0014] As a further technical solution, a fan is provided on the side of the compressor, and the fan can control the temperature of the compressor according to the set shell temperature.

[0015] As a further technical solution, one end of the fan is electrically connected to a multi-channel controller, which is also electrically connected to a refrigerant compressor, a tilting platform, a refrigerant control valve, an evaporator inlet control valve, an evaporator outlet control valve, a condenser control valve, and a throttling control valve.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are: 1. This utility model, through a multi-evaporator and controllable volume design, accurately simulates the volume changes of an actual refrigeration system, achieving a realistic simulation of the compressor start-up process. It employs a first evaporator and a second evaporator, equipped with evaporator inlet and outlet control valves, with a multi-channel controller controlling the combined operation of these two evaporators. When a small volume is selected, only the valve corresponding to the first evaporator is opened; when a medium volume is selected, only the valve corresponding to the second evaporator is opened; when a large volume is selected, both evaporator valves are opened simultaneously, thus achieving a stepped adjustment of the evaporator volume. Furthermore, a condenser control valve connects the condenser to the gas receiver, allowing for flexible adjustment of the condenser's effective volume. This enables the evaporator and condenser volumes of the test system to precisely change according to the actual volume requirements of the refrigeration appliance, ensuring that the compressor's suction and discharge environment during testing matches that of the actual refrigeration system, thereby accurately simulating the compressor start-up process. 2. This utility model achieves flexible selection of throttling methods through a replaceable capillary tube and a multi-throttling mode switching structure, closely resembling the throttling characteristics of actual refrigeration systems. The capillary tube in the device adopts a quick-connect coupling design, which can be quickly replaced according to the length, diameter, and other parameters of the capillary tube used in different refrigeration appliances, accurately matching the actual throttling components. At the same time, the throttling control valve can achieve convenient switching between the capillary tube and the solenoid valve, meeting the throttling mode requirements of different actual refrigeration systems. This allows the throttling mode of the test system to be flexibly selected according to the actual situation, making the throttling environment during testing consistent with the actual refrigeration system, and more closely reflecting the actual operating state. 3. This invention accurately achieves the tilt test state by matching the tilting platform with precise parameters, truly reflecting the operating conditions of the compressor during startup. The compressor is installed on a tilting platform that can be adjusted 360°, and the multi-channel controller can precisely set the tilt angle according to the test requirements. Furthermore, because the evaporator and condenser volumes of the system can be matched with the actual refrigeration system, and the throttling method is also consistent with reality, the overall operating environment of the compressor during the tilt test matches the tilt conditions during startup of an actual refrigeration appliance, thus accurately achieving the tilt test state and ensuring that the various performance characteristics of the compressor during startup under tilt conditions can be truly detected. Attached Figure Description The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] Figure 1 This is a structural diagram of the compressor start-up test device of this utility model; In the diagram: 1. Compressor; 2. Tilting platform; 3. Fan; 4. Condenser; 5. Gas receiver; 6. Solenoid valve; 7. Capillary tube; 8. First evaporator; 9. Second evaporator; 10. Refrigerant compressor; 11. Condenser control valve; 12. Throttling control valve; 13. Refrigerant control valve; 14. Evaporator inlet control valve; 15. Evaporator outlet control valve; 16. Multi-way controller. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] The internal volume of existing test equipment differs significantly from that of actual refrigeration appliances. As the types of refrigeration appliances continue to increase, the range of their internal volume variations widens, and the performance gap between small and large capacity compressors also expands. However, existing test equipment often employs a fixed internal volume design, causing the compressor's suction and discharge rates during testing to deviate from actual operating conditions. This results in significant discrepancies between single-unit test results and the compressor's performance within an actual refrigeration chamber, affecting test accuracy.

[0020] Secondly, the throttling methods of existing testing devices are incompatible with actual refrigeration appliances. Actual refrigeration appliances commonly use capillary tubes for throttling, and the capillary tubes used in different types and manufacturers vary in design parameters such as length and diameter. Existing start-up tests typically use throttling valves or solenoid valves as throttling components. While these methods are meaningful for comparing the start-up performance of different compressors, their incompatibility with actual throttling methods and parameters leads to discrepancies between the start-up voltage obtained from single-unit tests and the compressor's start-up voltage within the actual refrigeration unit. Furthermore, during compressor operation, the compressor core vibrates during start-up or shutdown, which can severely cause compressor knocking noises. Therefore, testing for this phenomenon is crucial. While existing technologies include schemes and systems for automatically detecting knocking noises under load in tilted states, these systems also suffer from inconsistencies in internal volume compared to actual refrigeration appliances and the lack of capillary tube throttling, resulting in significant discrepancies between test results and actual conditions, making it impossible to accurately assess the risk of compressor knocking noises.

[0021] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a compressor start-up test device, such as... Figure 1 As shown, the system includes a compressor 1 and a multi-way controller 16. A tilting platform 2 is installed at the lower end of the compressor 1. One end of the compressor 1 is connected to one end of the evaporator outlet control valve 15, and the other end of the evaporator outlet control valve 15 is connected to one end of the evaporator assembly. The other end of the evaporator assembly is connected to one end of the evaporator inlet control valve 14, which is connected to one end of the refrigerant control valve 13. The other end of the refrigerant control valve 13 is connected to the refrigerant compressor 10. The other end of the compressor 1 is connected to one end of the condenser control valve 11, which is connected to one end of the condenser 4. The other end of the condenser 4 is connected to one end of the throttling control valve 12, which is connected to one end of the solenoid valve 6 and the capillary tube 7.

[0022] Specifically, the compressor 1 discharge pipe is connected to the condenser control valve 11, the condenser control valve 11 is connected to the condenser 4 and the gas receiver 5, the condenser 4 is connected to the throttle valve control valve, the throttle valve control valve 12 is connected to the solenoid valve 6 and the capillary tube 7, and then connected to the refrigerant control valve 13, the refrigerant control valve 13 is connected to the refrigerant compressor 10 and the evaporator inlet control valve 14, the evaporator inlet control valve 14 is connected to the first evaporator 8 and the second evaporator 9, and the first evaporator 8 and the second evaporator 9 are connected to the evaporator outlet control valve 15.

[0023] Specifically, through the design of multiple evaporators and controllable volume, the volume change of the actual refrigeration system is accurately simulated to realize the real simulation of the compressor 1 start-up process. By setting up a first evaporator 8 and a second evaporator 9, and matching them with an evaporator inlet control valve 14 and an evaporator outlet control valve 15, the combined operation of the two evaporators is controlled by a multi-way controller 16.

[0024] When selecting a small volume, only the valve corresponding to the first evaporator 8 is opened; when selecting a medium volume, only the valve corresponding to the second evaporator 9 is opened; when selecting a large volume, the valves corresponding to both evaporators are opened simultaneously, thus achieving a stepped adjustment of the evaporator volume. The condenser 4 is connected to the gas storage tank 5 via the condenser control valve 11, allowing for flexible adjustment of the effective volume of the condenser 4. This enables the evaporator and condenser 4 volumes of the test system to precisely change according to the actual volume requirements of the refrigeration appliance, ensuring that the suction and discharge environment of the compressor 1 during testing is consistent with the actual refrigeration system, thereby accurately simulating the compressor 1's startup process.

[0025] The lower end of the compressor 1 is fixed on the tilting platform 2. The angle of the compressor 1 is adjusted by driving the compressor 1 through the tilting platform 2. A vibration sensor is installed inside the tilting platform 2.

[0026] Specifically, by matching the tilt table 2, which can be adjusted 360°, with precise parameters, the tilt test state is accurately realized, truly reflecting the operating conditions of the compressor 1 when it starts up. The compressor 1 is installed on the tilt table 2, which can be adjusted 360°, and the multi-channel controller 16 can accurately set the tilt angle according to the test requirements.

[0027] Furthermore, since the evaporator and condenser 4 volumes of the system can be matched with the actual refrigeration system, and the throttling method is also consistent with the actual situation, during the tilt test, the overall operating environment of the compressor 1 matches the tilt condition when the actual refrigeration appliance starts up, thus accurately realizing the tilt test state and ensuring that the various performance characteristics of the compressor 1 when it starts up under tilt conditions can be truly detected.

[0028] Specifically, the tilting table 2 is existing technology. The tilting table 2 is a device that can rotate 360 ​​degrees on a horizontal plane and tilt within a certain angle range, thereby realizing the angle adjustment of the compressor 1.

[0029] Vibration sensors are existing technology. A vibration sensor is a device that converts mechanical vibration signals into electrical signals (such as voltage and current). By analyzing the electrical signals, parameters such as vibration frequency, amplitude, and acceleration can be obtained. This invention uses a vibration sensor to determine the number of impacts with the shell based on test values, and then records the number of impacts.

[0030] The No. 2 port of the throttling control valve 12 is connected to the capillary tube 7, and the interface of the capillary tube 7 adopts a quick-connect connector structure.

[0031] Specifically, the interchangeable capillary tube 7 and the multi-throttling mode switching structure enable flexible selection of throttling mode, closely matching the throttling characteristics of the actual refrigeration system. The capillary tube 7 in the device adopts a quick-connect connector design, which can be quickly replaced according to the length, diameter and other parameters of the capillary tube 7 used by different refrigeration appliances, accurately matching the actual throttling components.

[0032] Meanwhile, the throttling control valve 12 enables convenient switching between the capillary tube 7 and the solenoid valve 6, meeting the throttling requirements of different actual refrigeration systems. This allows the throttling method of the test system to be flexibly selected according to the actual situation, making the throttling environment during the test consistent with the actual refrigeration system and closer to the actual operating state.

[0033] A fan 3 is installed on the side of the compressor 1, and the fan 3 can control the temperature of the compressor 1 according to the set shell temperature.

[0034] Specifically, the fan 3 is equipped with a corresponding power supply. The fan 3 can control the temperature of the compressor 1 according to the set shell temperature. If the temperature of the compressor 1 exceeds the set shell temperature during use, the fan 3 is started through the multi-channel controller 16 to reduce the shell temperature to the set temperature. The compressor 1 is equipped with a corresponding temperature sensor, which is electrically connected to the multi-channel controller 16. The temperature sensor detects the shell temperature of the compressor 1 and feeds it back to the multi-channel controller 16, which then determines whether the fan 3 needs to be started.

[0035] One end of the fan 3 is electrically connected to the multi-way controller 16, which is also electrically connected to the refrigerant compressor 10, the compressor 1, the tilting platform 2, the refrigerant control valve 13, the evaporator inlet control valve 14, the evaporator outlet control valve 15, the condenser control valve 11, and the throttling control valve 12.

[0036] Specifically, the multi-channel controller 16 is an existing technology, which is an electronic device or system that can centrally manage, control and schedule multiple input / output channels (signals, devices or loads). Through unified control logic or user instructions, it can realize automated operation, signal processing or resource allocation of multiple independent objects.

[0037] The multi-channel controller 16 receives signals and then controls whether the compressor 1, refrigerant compressor 10, tilting platform 2, and compressor 1 starts. It also controls the opening and closing of the valves of refrigerant control valve 13, evaporator inlet control valve 14, evaporator outlet control valve 15, condenser control valve 11, and throttling control valve 12, and automatically collects electrical parameters, pressure parameters, vibration parameters, etc., to achieve automated operation.

[0038] One end of the evaporator is connected to port 1 of the evaporator outlet valve, and port 1 of the evaporator outlet valve is connected to one end of the first evaporator 8 in the evaporator group. Port 2 of the evaporator outlet valve is connected to one end of the second evaporator 9 in the evaporator group. The other end of the first evaporator 8 is connected to port 1 of the evaporator inlet control valve 14, and the other end of the second evaporator 9 is connected to port 2 of the evaporator inlet control valve 14.

[0039] The refrigerant control valve 13 has port #1 connected to the refrigerant compressor 10, and one end of the refrigerant control valve 13 is connected to the solenoid valve 6 and the capillary tube 7. The other end of the compressor 1 is connected to the condenser control valve 11 via a pipe, port #1 of the condenser control valve 11 is connected to one end of the condenser 4, and port #2 of the condenser control valve 11 is connected to the gas receiver 5. The other end of the condenser 4 is connected to the throttling control valve 12 via a pipe, and port #1 of the throttling control valve 12 is connected to one end of the solenoid valve 6.

[0040] Instructions for using the compressor 1 start-up test device: After installing compressor 1 onto tilting platform 2, set parameters such as power supply voltage, power supply frequency, system pressure, running time, throttling method, evaporator volume, condenser 4 volume, and tilt angle on multi-channel controller 16. Then start the testing equipment. The equipment automatically opens all control valves, and refrigerant compressor 10 begins vacuuming. Once the system vacuum reaches the set value, refrigerant is charged according to the set pressure. After completion, port 1# of refrigerant control valve 13 is disconnected, and refrigerant compressor 10 stops working. Tilting platform 2 adjusts its tilt angle according to the set angle; it can also tilt 360°. Vibration sensor determines the number of times the casing is hit based on test values. Evaporator inlet control valve 14 and... The evaporator outlet control valve 15 controls the opening and closing of ports 1# and 2# according to the set value. If a small volume is selected, port 1# of the evaporator inlet control valve 14 and the evaporator outlet control valve 15 is open and port 2# is closed. If a medium volume is selected, port 1# of the evaporator inlet control valve 14 and the evaporator outlet control valve 15 is closed and port 2# is open. If a large volume is selected, port 1# of the evaporator inlet control valve 14 and the evaporator outlet control valve 15 is open and port 2# is open. The evaporator inlet control valve 14 controls the opening and closing of port 2# according to the set value. If a small volume is selected, port 2# of the evaporator inlet control valve 14 is closed. If a large volume is selected, port 2# of the evaporator inlet control valve 14 is open. The throttling control valve 12 controls ports 1# and 2# according to the throttling method selection. If solenoid valve 6 is selected, port 1# is opened and port 2# is closed. If capillary tube 7 is selected, port 2# is opened and port 1# is closed. If both are selected, ports 1# and 2# are both open. As long as port 1# is open, compressor 1 is running. The multi-channel controller 16 can automatically adjust the opening of solenoid valve 6 according to the rate of change of the system's suction and discharge pressure. After each control valve has completed its operation, the power supply starts compressor 1 according to the set voltage and frequency. The electrical parameter table on the multi-channel controller 16 displays the values ​​and can also display the real-time values ​​and curves of voltage, current, power, frequency, and pressure, and record the process values. This setting can be configured for multiple tasks. The entire system repeats the above experiment according to the task items, and outputs the test record after the test is completed.

[0041] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A compressor start-up test device, characterized in that, The system includes a compressor and a multi-way controller. The compressor has a tilting platform at its lower end. One end of the compressor is connected to one end of an evaporator outlet control valve, and the other end of the evaporator outlet control valve is connected to one end of an evaporator assembly. The other end of the evaporator assembly is connected to one end of an evaporator inlet control valve, which is connected to one end of a refrigerant control valve. The other end of the refrigerant control valve is connected to a refrigerant compressor. The other end of the compressor is connected to one end of a condenser control valve, which is connected to one end of a condenser. The other end of the condenser is connected to one end of a throttling control valve, which is connected to a solenoid valve and a capillary tube.

2. The compressor start-up test device as described in claim 1, characterized in that, The lower end of the compressor is fixed to the tilting platform, and the angle of the compressor is adjusted by the tilting platform; a vibration sensor is installed inside the tilting platform.

3. The compressor start-up test device as described in claim 1, characterized in that, One end of the evaporator is connected to port 1 of the evaporator outlet valve, and port 1 of the evaporator outlet valve is connected to one end of the first evaporator of the evaporator group.

4. The compressor start-up test device as described in claim 3, characterized in that, The evaporator outlet valve #2 is connected to one end of the second evaporator in the evaporator assembly, the other end of the first evaporator is connected to the evaporator inlet control valve #1, and the other end of the second evaporator is connected to the evaporator inlet control valve #2.

5. The compressor start-up test device as described in claim 1, characterized in that, The refrigerant control valve has port #1 connected to the refrigerant compressor, and one end of the refrigerant control valve is connected to the solenoid valve and the capillary tube.

6. The compressor start-up test device as described in claim 1, characterized in that, The other end of the compressor is connected to the condenser control valve via a pipe. Port #1 of the condenser control valve is connected to one end of the condenser, and port #2 of the condenser control valve is connected to the gas storage tank.

7. The compressor start-up test device as described in claim 1, characterized in that, The other end of the condenser is connected to a throttling control valve via a pipe, and port #1 of the throttling control valve is connected to one end of a solenoid valve.

8. The compressor start-up test device as described in claim 7, characterized in that, The throttling control valve's port #2 is connected to a capillary tube, and the capillary tube's interface uses a quick-connect fitting structure.

9. A compressor start-up test device as described in claim 1, characterized in that, A fan is installed on the side of the compressor, and the fan can control the temperature of the compressor according to the set shell temperature.

10. A compressor start-up test device as described in claim 9, characterized in that, One end of the fan is electrically connected to a multi-channel controller, which is also electrically connected to a refrigerant compressor, a tilting platform, a refrigerant control valve, an evaporator inlet control valve, an evaporator outlet control valve, a condenser control valve, and a throttling control valve.

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