Compressor vibration amplitude evaluation method and device

Abstract

The invention discloses a compressor vibration amplitude evaluation method and device in the technical field of compressors. The compressor vibration amplitude evaluation method comprises the following steps: S1, preparing a compressor and a plurality of to-be-verified parts; s2, one of the parts to be verified is assembled on the compressor, the running state is simulated under the condition that a cover of the compressor is opened, and the swing amplitude of a machine core of the compressor is observed; and S3, replacing the to-be-verified parts, and repeating the steps S2-S3 until verification of the to-be-verified parts is completed. According to the method and the device, the running state is simulated under the condition that the compressor is uncovered, so that the swing of the compressor core can be observed to serve as an index for evaluating the vibration swing of the compressor. In this way, when the to-be-verified part is replaced, operation is convenient, compressor loss is small, and the installation verification test period is short.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a method and device for evaluating the vibration swing amplitude of a compressor. Background Art

[0002] Compressors are widely used in household appliances such as refrigerators and air conditioners. As consumers have higher and higher requirements for the comfort of product experience, the requirements for compressor noise reduction are also getting higher and higher. Noise comes from vibration. In practice, the process of vibration reduction and noise reduction is achieved by combining theoretical calculations and installation verification. It is usually necessary to verify the installation of multiple parts separately. Because the compressor is a fully enclosed structure, the upper and lower shells must be welded after assembly. Therefore, the verification is a one-time test. After the compressor is seam-welded, if you want to replace parts and verify other solutions, you need to cut it with a cutting machine, replace the parts, and assemble the compressor again. Such verification has a long test cycle and large compressor losses. Summary of the invention

[0003] In order to overcome the problems of long installation verification test cycle and large compressor loss in the existing compressor vibration and noise reduction process, the present invention provides a compressor vibration swing amplitude evaluation method and device.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] The compressor vibration swing amplitude evaluation method comprises the following steps: S1, preparing a compressor and a plurality of parts to be verified; S2, assembling one of the parts to be verified onto the compressor, simulating an operating state with the compressor cover opened, and observing the swing amplitude of the compressor movement; S3, replacing the parts to be verified, and repeating S2-S3 until the plurality of parts to be verified have completed the verification.

[0006] In this application, by simulating the operating state with the compressor cover opened, the vibration amplitude of the compressor movement can be observed as an indicator for evaluating the vibration amplitude of the compressor. In this way, when replacing the parts to be verified, the operation is convenient, the compressor loss is small, and the installation verification test cycle is short.

[0007] In some embodiments, S2 includes: S21, the compressor exhaust pipe is connected to the exhaust control device, the exhaust control device includes an air storage container, the air inlet pipeline of the air storage container is connected to the compressor exhaust pipe, and an exhaust valve is provided on the air outlet pipeline of the air storage container; S22, one of the parts to be verified is installed into the compressor, the compressor is in an open cover state and started, the exhaust valve is adjusted so that the exhaust pressure is maintained within the range value when the compressor is working normally, and the swing amplitude of the compressor movement is observed.

[0008] In some embodiments, S22 includes: S221, installing one of the parts to be verified into the compressor, the compressor is in an open cover state, starting the compressor, closing the exhaust valve for a period of time, so that the exhaust pressure rises to the range value when the compressor is working normally; S222, adjusting the exhaust valve to maintain the exhaust pressure within the range value when the compressor is working normally, and observing the swing amplitude of the compressor movement.

[0009] In some embodiments, in S2 , the swing amplitude of the compressor movement is observed by a stroboscope.

[0010] In some embodiments, the exhaust valve is adjusted in S2 so that the exhaust pressure is maintained at 0.8 Mpa-1 Mpa.

[0011] The present invention also provides a device for the compressor vibration swing amplitude evaluation method described in any of the above embodiments, comprising an exhaust control device and a swing amplitude detection device, the exhaust control device comprising an air storage container and an exhaust valve, the air storage container is provided with an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is used to connect to the compressor exhaust pipe, and the air outlet pipeline is provided with an exhaust valve; the swing amplitude detection device is used to detect the swing amplitude of the compressor movement.

[0012] In some embodiments, a pressure gauge is provided on the gas storage container to detect the gas pressure in the gas storage container.

[0013] In some embodiments, the swing amplitude detection device is a stroboscope.

[0014] The beneficial effects of the present invention are:

[0015] By simulating the running state with the compressor cover opened, the vibration amplitude of the compressor can be observed as an indicator for evaluating the vibration amplitude of the compressor. In this way, when replacing the parts to be verified, the operation is convenient, the compressor loss is small, and the installation verification test cycle is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic flow chart of a compressor vibration swing amplitude evaluation method provided by the present invention;

[0017] Figure 2 A schematic diagram of the structure of a device for evaluating compressor vibration swing amplitude provided by the present invention.

[0018] The markings in the figure are: 1-compressor, 2-air inlet pipeline, 3-gas storage container, 4-air outlet pipeline, 5-exhaust valve, 6-pressure gauge. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Combination Figure 1 and Figure 2 As shown, the present invention provides a method and device for evaluating the vibration swing amplitude of a compressor.

[0022] The compressor vibration swing amplitude evaluation method comprises the following steps: S1, preparing a compressor 1 and a plurality of parts to be verified; S2, assembling one of the parts to be verified onto the compressor 1, simulating the operating state when the compressor 1 is opened, and observing the swing amplitude of the compressor 1 movement; S3, replacing the parts to be verified, and repeating S2-S3 until the plurality of parts to be verified have completed the verification.

[0023] In the present application, by simulating the operating state with the compressor 1 cover opened, the swing amplitude of the compressor 1 movement can be observed as an indicator for evaluating the vibration swing amplitude of the compressor 1. In this way, when replacing the parts to be verified, the operation is convenient, the compressor 1 has low loss, and the installation verification test cycle is short.

[0024] Furthermore, S2 includes: S21, the exhaust pipe of compressor 1 is connected to the exhaust control device, the exhaust control device includes an air storage container 3, the air inlet pipe 2 of the air storage container 3 is connected to the exhaust pipe of compressor 1, and the air outlet pipe 4 of the air storage container 3 is provided with an exhaust valve 5; S22, one of the parts to be verified is installed into the compressor 1, the compressor 1 is in an open cover state and started, the exhaust valve 5 is adjusted so that the exhaust pressure is maintained within the range value when the compressor 1 is working normally, and the swing amplitude of the compressor 1 movement is observed.

[0025] In this embodiment, the exhaust control device is used to simulate the operating state of the compressor 1 with the cover opened.

[0026] Furthermore, S22 includes: S221, installing one of the parts to be verified into the compressor 1, the compressor 1 is in an open cover state, starting the compressor 1, closing the exhaust valve 5 for a period of time, so that the exhaust pressure rises to the range value when the compressor 1 is working normally; S222, adjusting the exhaust valve 5 to maintain the exhaust pressure within the range value when the compressor 1 is working normally, and observing the swing amplitude of the compressor 1 movement.

[0027] Obviously, the step of “installing one of the parts to be verified into the compressor 1 ” in S221 may occur in the previous step.

[0028] By implementing as above, the gas storage container 3 is first inflated and pressurized, and then the exhaust pressure is controlled to be stable within the range value when the compressor 1 is working normally, so as to take into account both time and verification effectiveness.

[0029] Furthermore, in S2, the swing amplitude of the movement of the compressor 1 is observed by a stroboscope.

[0030] At this time, different results can be obtained according to different verification purposes. For example, when you need to find out which parts meet the requirements of vibration reduction and noise reduction among multiple parts to be verified, you only need to compare the swing amplitudes corresponding to the target parts separately; when you need to find out which parts have the best vibration reduction and noise reduction effect among multiple parts to be verified, you need to observe and compare the verification results of each part.

[0031] In practice, there are many solutions for detecting the swing amplitude, such as using photoelectric sensors, angular displacement sensors, laser rangefinders and other devices to detect the swing amplitude of the movement; high-speed cameras can also be used to quickly take pictures, store them in a computer, and identify the swing amplitude. In this embodiment, based on cost and implementation convenience, a stroboscope is preferably used to observe the swing amplitude of the movement.

[0032] A stroboscope can emit short and frequent flashes. When the flash frequency is close to or synchronized with the rotation or movement speed of the object being measured, the surface quality or running condition of the high-speed moving object can be easily observed by using the eye's persistence of vision or video synchronization.

[0033] Furthermore, in S2, the exhaust valve 5 is adjusted so that the exhaust pressure is maintained at 0.8 Mpa-1 Mpa.

[0034] As mentioned above, the exhaust pressure control is to simulate the normal operation state of the compressor 1, and the pressure control here can be trial-produced according to different types of compressors 1. In this embodiment, the volume of the gas storage container 3 is 1L, and in practice the capacity can be adjusted according to the exhaust pressure of different types of compressors 1 when they are working.

[0035] The present invention also provides a device for the above-mentioned compressor vibration swing amplitude evaluation method, comprising an exhaust control device and a swing amplitude detection device, the exhaust control device comprising an air storage container 3 and an exhaust valve 5, the air storage container 3 is provided with an air inlet pipeline 2 and an air outlet pipeline 4, the air inlet pipeline 2 is used to connect to the exhaust pipe of the compressor 1, and the air outlet pipeline 4 is provided with an exhaust valve 5; the swing amplitude detection device is used to detect the swing amplitude of the compressor 1 movement.

[0036] Furthermore, the gas storage container 3 is provided with a pressure gauge 6 for detecting the gas pressure in the gas storage container 3 .

[0037] By setting the pressure gauge 6, information feedback is provided to facilitate adjustment of the exhaust valve 5.

[0038] Furthermore, the swing amplitude detection device is a stroboscope.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for evaluating compressor vibration amplitude, characterized in that: The following steps are involved: S1. preparing a compressor (1) and a plurality of parts to be verified; S2, assembling one of the parts to be verified onto the compressor (1), simulating the running state with the cover of the compressor (1) open, and observing the swing amplitude of the movement of the compressor (1); S3. Replace the parts to be verified, and repeat S2-S3 until the multiple parts to be verified have completed verification.

2. The compressor vibration amplitude evaluation method according to claim 1, characterized in that: S2 contains: S21, the exhaust pipe of the compressor (1) is connected to the exhaust control device, the exhaust control device comprises an air storage container (3), an air inlet pipeline (2) of the air storage container (3) is connected to the exhaust pipe of the compressor (1), and an exhaust valve (5) is provided on the air outlet pipeline (4) of the air storage container (3); S22. Install one of the parts to be verified into the compressor (1). The compressor (1) is in an open state and started. Adjust the exhaust valve (5) so that the exhaust pressure is maintained within the range of the compressor (1) when it is working normally. Observe the swing amplitude of the compressor (1) movement.

3. The compressor vibration amplitude evaluation method according to claim 2, characterized in that: S22 contains: S221, installing one of the parts to be verified into the compressor (1), with the compressor (1) in an open cover state, starting the compressor (1), and closing the exhaust valve (5) for a period of time, so that the exhaust pressure rises to a range value when the compressor (1) is working normally; S222. Adjust the exhaust valve (5) to maintain the exhaust pressure within the range of the normal working value of the compressor (1), and observe the swing amplitude of the compressor (1).

4. The compressor vibration amplitude evaluation method according to claim 1, characterized in that: In S2, the swing amplitude of the compressor (1) movement is observed by means of a stroboscope.

5. The compressor vibration amplitude evaluation method according to any one of claims 1 to 4, characterized in that: In S2, the exhaust valve (5) is adjusted so that the exhaust pressure is maintained at 0.8Mpa-1Mpa.

6. A device for evaluating the vibration amplitude of a compressor according to any one of claims 1 to 5, characterized in that: The invention comprises an exhaust control device and a swing amplitude detection device, wherein the exhaust control device comprises an air storage container (3) and an exhaust valve (5), the air storage container (3) is provided with an air inlet pipeline (2) and an air outlet pipeline (4), the air inlet pipeline (2) is used to connect to the exhaust pipe of a compressor (1), and the air outlet pipeline (4) is provided with an exhaust valve (5); and the swing amplitude detection device is used to detect the swing amplitude of the movement of the compressor (1).

7. The device for evaluating the vibration amplitude of a compressor according to claim 6, characterized in that: The gas storage container (3) is provided with a pressure gauge (6) for detecting the gas pressure in the gas storage container (3).

8. The device for evaluating the vibration amplitude of a compressor according to claim 6 or 7, characterized in that: The swing amplitude detection device is a stroboscope.

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