Shock absorber, compressor assembly, control method thereof, and refrigeration apparatus

Abstract

The application discloses a damper, a compressor assembly, a control method of the damper and a refrigeration equipment. The damper comprises a fixing part, a plurality of damping elements, the plurality of damping elements are arranged at intervals on the fixing part, the damping element comprises a flexible part and a damping block, one end of the flexible part is connected to the fixing part and the other end is connected to the damping block, and the damping frequencies of at least two damping elements are different. According to the damper, the vibration of the damping element is used to absorb the energy generated by the vibration of the compressor, the vibration amplitude of the compressor is greatly reduced, the vibration problem caused by the high speed of the compressor is solved, the radiation noise generated by the vibration of the compressor is reduced, at least two damping elements with different sizes and different masses are arranged, the damping frequencies of the damping elements are different, the vibration absorption effect of the damping elements is good in each frequency band, the effective frequency range of the damping is greatly widened, and the purpose of wide-frequency damping is achieved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a vibration damper, a compressor assembly, a control method thereof, and a refrigeration device. Background Technology

[0002] Miniaturization and high-speed operation of compressors have become industry trends, but there are still many problems in the current high-speed operation of compressors, among which the vibration and noise of the compressor body are particularly prominent.

[0003] Currently, the main technical solutions adopted for compressor vibration reduction include:

[0004] 1. Adding a counterweight structure to the compressor housing or liquid receiver, with the counterweight structure having a cavity filled with granular materials, cement, or other fillers, cannot achieve multi-frequency vibration reduction;

[0005] 2. Install vibration damping elements inside the liquid reservoir and arrange two or more counterweights of different masses to reduce vibration in different frequency bands;

[0006] 3. A vibration damping ring is installed on the compressor housing. The vibration damping ring assembly has a pendulum and a magnetic cavity inside the vibration damping ring body. The vibration of the compressor is transmitted to the vibration damping ring body, causing the pendulum to swing in the magnetic cavity and generate an eddy current effect, which converts the vibration energy into heat energy for dissipation.

[0007] The above technical solutions still have shortcomings: the vibration reduction frequency band is narrow and it is impossible to achieve vibration reduction across the entire frequency band; the structure is complex and difficult to implement in engineering applications; for high-speed compressors, the vibration reduction effect is limited and it still cannot solve the problem of large vibration and high radiated noise caused by high-frequency operation of the compressor. Summary of the Invention

[0008] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a vibration damper that can achieve good vibration absorption in various frequency bands, greatly widening the effective frequency range of vibration damping.

[0009] The present invention also proposes a compressor assembly having the above-mentioned vibration damper.

[0010] The present invention also proposes a control method for having the above-described compressor components.

[0011] The present invention also proposes a refrigeration device having the above-described compressor assembly.

[0012] According to a first aspect of the present invention, a vibration damper includes: a fixing member; a plurality of vibration damping elements, the plurality of vibration damping elements being spaced apart from the fixing member, each vibration damping element including a flexible member and a vibration damping block, one end of the flexible member being connected to the fixing member and the other end being connected to the vibration damping block, and at least two of the vibration damping elements having different vibration damping frequencies.

[0013] According to the vibration damper of the present invention, by setting vibration damping elements, the vibration of the vibration damping elements absorbs the energy generated by the vibration of the compressor, which greatly reduces the vibration amplitude of the compressor and solves the vibration problem caused by the high speed of the compressor. This reduces the radiated noise generated by the compressor due to vibration. Furthermore, by setting at least two vibration damping elements of different sizes and masses, the vibration damping frequencies of the vibration damping elements are different. In this way, a good vibration absorption effect can be achieved in various frequency bands, which greatly widens the effective frequency range of vibration damping and thus achieves the purpose of wideband vibration damping.

[0014] In some embodiments, at least some of the damping blocks have different masses, and / or at least some of the flexible elements have different lengths.

[0015] In some embodiments, the damping block is spherical with a radius of 2mm-25mm; and / or, the length of the flexible member is 3mm-50mm.

[0016] In some embodiments, the fastener is a cavity with a receiving cavity, and the plurality of vibration damping elements are disposed within the receiving cavity.

[0017] In some embodiments, the damping block is suspended by the flexible element from the side wall and / or top wall of the receiving cavity.

[0018] A compressor assembly according to a second aspect of the invention includes a vibration damper according to a first aspect of the invention.

[0019] According to the compressor assembly of the present invention, by setting a vibration damper of the first aspect of the present invention, the vibration of the damping element absorbs the energy generated by the vibration of the compressor, which greatly reduces the vibration amplitude of the compressor and solves the vibration problem caused by the high speed of the compressor. This reduces the radiated noise generated by the vibration of the compressor. Furthermore, by setting at least two damping elements of different sizes and masses, the damping frequencies of the damping elements are different. In this way, a good vibration absorption effect can be achieved in various frequency bands, which greatly widens the effective frequency range of vibration reduction and achieves the purpose of wideband vibration reduction.

[0020] In some embodiments, the vibration damper is located on the underside of the reservoir of the compressor assembly.

[0021] In some embodiments, the fixing member is a cavity with a receiving cavity, the top surface of which is formed as a downwardly concave arc surface, and the height of the cavity gradually decreases in the direction from the reservoir toward the compressor.

[0022] In some embodiments, the compressor assembly further includes: a first acquisition module for acquiring the vibration amplitude of the damping block; a second acquisition module for acquiring the current operating frequency of the compressor; a judgment module for judging whether the vibration amplitude exceeds a preset amplitude; and a control module for controlling the change of the current operating frequency of the compressor when the vibration amplitude is greater than or equal to the preset amplitude.

[0023] In some embodiments, when the vibration amplitude exceeds the preset amplitude, the judgment module determines the current operating frequency of the compressor as the abnormal vibration frequency, and the control module always controls the compressor to operate at a frequency other than the abnormal vibration frequency.

[0024] According to a control method for a compressor assembly according to a third aspect of the present invention, the compressor assembly includes a vibration damper according to a first aspect of the present invention, the control method comprising: acquiring the current operating frequency of the compressor, acquiring the vibration amplitude of the vibration damper; determining whether the vibration amplitude exceeds a preset amplitude; and changing the current operating frequency of the compressor when the vibration amplitude is greater than or equal to the preset amplitude.

[0025] Furthermore, changing the current operating frequency of the compressor includes: adjusting the operating frequency of the compressor to the current operating frequency ± a preset step size, wherein the preset step size is 1Hz-2Hz.

[0026] Furthermore, the control method further includes: when the vibration amplitude exceeds the preset amplitude, determining the current operating frequency of the compressor as the abnormal vibration frequency, and controlling the compressor to operate at a frequency other than the abnormal vibration frequency.

[0027] The refrigeration apparatus according to a fourth aspect of the present invention includes a compressor assembly according to the second aspect of the present invention described above.

[0028] According to the refrigeration equipment of the present invention, by providing the compressor assembly described in the second aspect, the reliability and stability of the refrigeration equipment are improved, the service life of the refrigeration equipment is extended, and the vibration and radiation noise generated during the operation of the refrigeration equipment is reduced.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] Figure 1This is a schematic diagram of a compressor assembly according to an embodiment of the present invention;

[0031] Figure 2 yes Figure 1 A schematic diagram of the vibration damper shown;

[0032] Figure 3 yes Figure 2 A schematic diagram of an enlarged view of the vibration damping element shown;

[0033] Figure 4 yes Figure 1 A schematic diagram of another embodiment of the vibration damper shown;

[0034] Figure 5 yes Figure 1 A schematic diagram of yet another embodiment of the vibration damper shown;

[0035] Figure 6 yes Figure 1 A schematic diagram of another embodiment of the vibration damper shown;

[0036] Figure 7 yes Figure 6 A schematic diagram of an enlarged view of the vibration damping element shown;

[0037] Figure 8 This is a line graph comparing the tangential acceleration of the liquid storage tank of the present invention and the prototype.

[0038] Figure 9 This is a line graph showing the noise from all directions during the heating operation of the present invention and the prototype.

[0039] Figure 10 This is a flowchart of a control method for a compressor assembly according to an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of a compressor assembly according to an embodiment of the present invention.

[0041] Figure label:

[0042] 100. Compressor assembly;

[0043] 10. Vibration dampers;

[0044] 1. Fastener; 11. Mounting cavity;

[0045] 2. Vibration damping elements; 21. Flexible components; 22. Vibration damping blocks;

[0046] 20. Compressor; 30. Liquid receiver;

[0047] 40. First acquisition module; 50. Second acquisition module;

[0048] 60. Judgment module; 70. Control module. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] The following is for reference. Figures 1-7 A vibration damper 10 according to an embodiment of the first aspect of the present invention is described.

[0051] like Figures 1-7 As shown, the vibration damper 10 according to a first aspect embodiment of the present invention includes: a fixing member 1 and a plurality of vibration damping elements 2.

[0052] Specifically, multiple vibration damping elements 2 are spaced apart on the fixed member 1. Each vibration damping element 2 includes a flexible member 21 and a damping block 22. One end of the flexible member 21 is connected to the fixed member 1, and the other end is connected to the damping block 22. At least two vibration damping elements 2 have different damping frequencies. In other words, the fixed member 1 is provided with multiple vibration damping elements 2, which are spaced apart. Each vibration damping element 2 includes a flexible member 21 and a damping block. One end of the flexible member 21 is connected to the fixed member 1, and the other end is connected to the damping block 22. At least two of the multiple vibration damping elements 2 have different sizes and masses, which can achieve good vibration absorption in various frequency bands, thereby achieving different damping frequencies and realizing wideband vibration damping.

[0053] According to the embodiment of the present invention, the vibration damper 10, by setting vibration damping element 2, absorbs the energy generated by the vibration of compressor 20 by the vibration of vibration damping element 2, greatly reducing the vibration amplitude of compressor 20, solving the vibration problem caused by the high speed of compressor 20, thereby reducing the radiated noise generated by vibration of compressor 20. Furthermore, by setting at least two vibration damping elements 2 of different sizes and masses, the vibration damping frequency of vibration damping element 2 is different. In this way, it can play a good vibration absorption effect in various frequency bands, greatly widening the effective frequency range of vibration damping, thereby achieving the purpose of wideband vibration damping.

[0054] In some embodiments of the present invention, at least some of the damping blocks 22 have different masses, and / or at least some of the flexible members 21 have different lengths. That is, among the multiple damping elements 2, at least some of the damping blocks 22 may have different masses, at least some of the flexible members 21 may have different lengths, or at least some of the damping blocks 22 and flexible members 21 may both have different masses. In this way, the damping elements 2 can absorb the vibrations of the compressor 20 in different frequency bands, achieving a wide-band vibration reduction effect and reducing the radiated noise of the compressor 20 under different operating conditions.

[0055] In some embodiments of the present invention, the damping block 22 is spherical with a radius of 2mm-25mm; and / or, the length of the flexible member 21 is 3mm-50mm. Since the distance from any point on the sphere to the center of the sphere is the same, this facilitates assembly and improves the assembly speed. For example, the radius of the damping block 22 can be: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 8mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 25mm, etc.; the length of the flexible component 21 can be: 3mm, 3.5mm, 4mm, 5mm, 6mm, 8mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.

[0056] In some embodiments of the present invention, the fixing member 1 is a cavity with a receiving cavity, and multiple vibration damping elements 2 are disposed within the receiving cavity. (Refer to...) Figure 2 As shown, the fixing member 1 is formed as a cavity, and a receiving cavity is formed inside the fixing member 1, in which multiple vibration damping elements 2 are installed. Thus, the fixing member 1 has a simple structure, is easy to manufacture, and is easy to assemble with the vibration damping elements 2.

[0057] In some embodiments of the present invention, the damping block 22 is suspended in the side wall and / or top wall of the receiving cavity by a flexible member 21. That is, the damping element 2 can be disposed in the side wall of the receiving cavity, the top wall of the receiving cavity, or both the side wall and top wall of the receiving cavity, with the damping block 22 suspended in the receiving cavity by the flexible member 21. Thus, when the compressor 20 vibrates, the damping element 2 also vibrates, and the damping block 22 of the damping element 2 absorbs the energy generated by the vibration of the compressor 20, effectively reducing the vibration amplitude of the compressor 20, thereby reducing the radiated noise generated by the vibration of the compressor 20.

[0058] The following will refer to Figures 1-7A vibration damper 10 according to six specific embodiments of the present invention is described. The vibration damper 10 includes a fixing member 1 and a plurality of damping elements 2. The plurality of damping elements 2 are spaced apart and arranged within the receiving cavity of the fixing member 1. Each damping element 2 includes a flexible member 21 and a damping block. One end of the flexible member 21 is connected to the fixing member 1, and the other end of the flexible member 21 is connected to the damping block 22. The vibration damper can be applied to a fixed-frequency compressor 20 or a variable-frequency compressor 20.

[0059] Example 1,

[0060] like Figure 2 As shown, the vibration damper 10 includes a fixing member 1 and five vibration damping elements 2. All five vibration damping elements 2 are disposed on the side wall of the fixing member 1. One of the five vibration damping elements 2 is suspended on the left side wall of the fixing member 1, and the other four of the five vibration damping elements 2 are suspended on the right side wall of the fixing member 1. The radii of the vibration damping blocks 22 of the five vibration damping elements 2 are different, and the lengths of the flexible parts 21 of the five vibration damping elements 2 are different.

[0061] Example 2: This example has a structure that is roughly the same as that of Example 1. The same components are referred to by the same reference numerals. The only difference is that the radii of the damping blocks 22 of the five damping elements 2 in Example 1 are different, and the lengths of the flexible parts 21 of the five damping elements 2 are different. In this example 2, the radii of the damping blocks 22 of the five damping elements 2 are the same, and the lengths of the flexible parts 21 of the five damping elements 2 are different.

[0062] Example 3: This example has a structure that is roughly the same as that of Example 1. The same components are referred to by the same reference numerals. The only difference is that the radii of the damping blocks 22 of the five damping elements 2 in Example 1 are different, and the lengths of the flexible parts 21 of the five damping elements 2 are different. In this example 3, the radii of the damping blocks 22 of the five damping elements 2 are different, and the lengths of the flexible parts 21 of the five damping elements 2 are the same.

[0063] Example 4: This example has a structure that is roughly the same as that of Example 1. The same components are referred to by the same reference numerals. The only difference is that in Example 1, the vibration damping blocks 22 of the five vibration damping elements 2 have the same radius and the flexible parts 21 of the five vibration damping elements 2 have the same length. In Example 4, the vibration damping blocks 22 of the five vibration damping elements 2 have the same radius and the flexible parts 21 of the five vibration damping elements 2 have the same length.

[0064] Example 5,

[0065] This embodiment has a structure that is roughly the same as that of Embodiment 1, with the same components using the same reference numerals. The only difference is that Embodiment 1 has five vibration damping elements 2, which are arranged on the side wall of the fixing member 1, while this Embodiment 4 has four vibration damping elements 2, which are arranged on the top wall of the fixing member 1.

[0066] like Figure 4 As shown, the vibration damper 10 includes a fixing member 1 and four vibration damping elements 2. The four vibration damping elements 2 are all disposed on the top wall of the fixing member 1 and suspended on the top wall of the fixing member 1. The vibration damping blocks 22 of the four vibration damping elements 2 have the same radius, and the flexible parts 21 of the five vibration damping elements 2 have different lengths.

[0067] Example 6: This example has a structure that is roughly the same as that of Example 4. The same components are referred to by the same reference numerals. The only difference is that in Example 4, the vibration damping blocks 22 of the four vibration damping elements 2 have the same radius and the flexible parts 21 of the five vibration damping elements 2 have different lengths. In Example 6, the vibration damping blocks 22 of the four vibration damping elements 2 have different radii and the flexible parts 21 of the five vibration damping elements 2 have different lengths.

[0068] Example 7: This example has a structure that is roughly the same as that of Example 4. The same components are referred to by the same reference numerals. The only difference is that in Example 4, the vibration damping blocks 22 of the four vibration damping elements 2 have the same radius and the flexible parts 21 of the five vibration damping elements 2 have different lengths. In Example 7, the vibration damping blocks 22 of the four vibration damping elements 2 have different radii and the flexible parts 21 of the five vibration damping elements 2 have the same length.

[0069] Example 8, as Figure 5 As shown, the structure of this embodiment is roughly the same as that of embodiment four, with the same reference numerals used for the same components. The only difference is that in embodiment four, the vibration damping blocks 22 of the four vibration damping elements 2 have the same radius and the flexible members 21 of the five vibration damping elements 2 have the same length, while in this embodiment eight, the vibration damping blocks 22 of the four vibration damping elements 2 have the same radius and the flexible members 21 of the five vibration damping elements 2 have the same length.

[0070] Since the operating frequency of the fixed-frequency compressor 20 is basically constant and the range of variation is very small, the above embodiments four and eight are vibration dampers applied to the fixed-frequency compressor 20. The vibration damping blocks 22 of the vibration damping elements 2 have the same radius, and the flexible parts 21 of the vibration damping elements 2 have the same length. When the compressor 20 vibrates, two or more vibration damping elements 2 are used. The vibration damping elements 2 vibrate accordingly, and the mechanical energy of the compressor 20 vibration is converted into the mechanical energy of the vibration of the compressor, thus reducing the vibration of the entire machine.

[0071] Since the operating frequency of the compressor 20 is variable and not a fixed value, the above embodiments one, two, three, five, six, and seven are vibration dampers applied to the variable frequency compressor 20. In these embodiments, the radii of the damping blocks 22 of the damping element 2 are different, or the lengths of the flexible parts 21 of the damping element 2 are different, or both the radius of the damping blocks 22 and the length of the flexible parts 21 of the damping element 2 are different. As the frequency of the compressor 20 changes, the vibration characteristics of the damping element 2 also change. Damper blocks 22 with different radii have different masses, therefore their resonance frequency ranges are also different. If oscillators of different sizes are used, the entire vibration damper 10 will have a very wide resonance frequency band. When the compressor 20 operates at different frequencies, especially at high frequencies, the oscillators can have a significant vibration damping effect.

[0072] It should be noted that, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of the different embodiments or examples, and the number of vibration damping elements 2, the radius of vibration damping block 22, and the length of flexible member 21 in this embodiment are not limited thereto.

[0073] The following is for reference. Figures 1-9 A compressor assembly 100 according to a second aspect of the present invention is described, including a vibration damper 10 according to a first aspect of the present invention.

[0074] According to the compressor assembly 100 of the present invention, by setting the vibration damper 10 of the first aspect embodiment of the present invention, the vibration of the damping element 2 is used to absorb the energy generated by the vibration of the compressor 20, which greatly reduces the vibration amplitude of the compressor 20, solves the vibration problem caused by the high speed of the compressor 20, and reduces the radiated noise generated by the vibration of the compressor 20. Furthermore, by setting at least two damping elements 2 of different sizes and masses, the damping frequency of the damping elements 2 is different. In this way, a good vibration absorption effect can be achieved in various frequency bands, which greatly widens the effective frequency range of vibration reduction, thereby achieving the purpose of wideband vibration reduction.

[0075] In some embodiments of the present invention, the vibration damper 10 is disposed below the liquid reservoir of the compressor assembly 100. This arrangement makes the structure of the compressor assembly 100 more compact, thereby reducing the installation volume of the compressor assembly 100. However, the installation position of the vibration damper 10 is not limited to this in the embodiments of the present invention.

[0076] In some embodiments of the present invention, the fixing member 1 is a cavity with a receiving cavity, the top surface of which is formed as a downwardly concave arc surface, and the height of the cavity gradually decreases in the direction from the liquid reservoir toward the compressor 20. (Refer to...) Figure 2 As shown, the fixing member 1 is formed as a cavity, and a receiving cavity is formed inside the fixing member 1. The top surface of the cavity is a downwardly concave arc surface, in the direction from the compressor 20 toward the liquid receiver (e.g. Figure 2 As shown from left to right, the height of the cavity gradually increases, and the shape of the fixing part 1 is suitable for assembly with the liquid reservoir, which further improves the structural compactness of the compressor assembly 100 and reduces the spatial volume of the compressor assembly 100 while ensuring the function of the compressor assembly 100.

[0077] In some embodiments of the present invention, the compressor assembly 100 further includes: a first acquisition module 40, a second acquisition module 50, a judgment module 60, and a control module 70. The first acquisition module 40 is used to acquire the vibration amplitude of the damping block 22, the second acquisition module 50 is used to acquire the current operating frequency of the compressor 20, and the judgment module 60 is used to judge whether the vibration amplitude exceeds a preset amplitude. When the vibration amplitude is greater than or equal to the preset amplitude, the control module 70 controls the change of the current operating frequency of the compressor 20. Therefore, the real-time operating condition of the compressor assembly 100 can be acquired in a timely manner, and judgments and adjustments can be made based on the real-time operating condition, ensuring that the compressor assembly 100 can always operate under normal conditions, reducing the failure rate of the compressor assembly 100, and improving the performance of the compressor assembly 100.

[0078] In some embodiments of the present invention, when the vibration amplitude exceeds a preset amplitude, the judgment module 60 determines the current operating frequency of the compressor 20 as an abnormal vibration frequency, and the control module 70 always controls the compressor 20 to operate at a frequency other than the abnormal vibration frequency. That is, when the swing amplitude of the damping block 22 is greater than the preset amplitude, the judgment module 60 determines that the compressor 20 is vibrating abnormally and feeds back to the control module 70. The control module 70 adjusts the operating frequency of the compressor 20 to avoid the abnormal vibration frequency, thereby achieving normal operation of the compressor assembly 100 and improving the reliability and stability of the compressor 20.

[0079] The following is for reference. Figures 1-11 A control method for a compressor assembly 100 according to a third aspect of the present invention is described, the compressor assembly 100 including a vibration damper 10 according to a first aspect of the present invention, the control method including: acquiring the current operating frequency of the compressor 20, acquiring the vibration amplitude of the vibration damping block 22; determining whether the vibration amplitude S exceeds a preset amplitude S0; and changing the current operating frequency of the compressor 20 when the vibration amplitude S is greater than or equal to the preset amplitude S0.

[0080] Furthermore, changing the current operating frequency of the compressor 20 includes adjusting the operating frequency of the compressor 20 to the current operating frequency F0 ± preset step size ΔF, where the preset step size ΔF is 1Hz-2Hz.

[0081] Furthermore, when the vibration amplitude exceeds the preset amplitude, the current operating frequency of the compressor 20 is determined as the vibration abnormal frequency, and the compressor 20 is controlled to operate at a frequency other than the vibration abnormal frequency.

[0082] That is to say, the first acquisition module 40 acquires the vibration amplitude S of the vibration damping block 22, the second acquisition module 50 acquires the current operating frequency Fi of the compressor 20, and the judgment module 60 judges whether the vibration amplitude S exceeds the preset amplitude S0. When the vibration amplitude S is greater than or equal to the preset amplitude S0, the current operating frequency of the compressor 20 is determined as the vibration abnormal frequency F0, and the compressor 20 is controlled to operate at a frequency other than the vibration abnormal frequency F0. The control module 70 controls to change the current operating frequency Fi of the compressor 20 to Fi = F0 ± ΔF.

[0083] For example, the range of the preset amplitude S0 is 10mm - 25mm. Optionally, the preset amplitude S0 can be: 10mm, 11mm, 12mm, 14mm, 16mm, 18mm, 20mm, 21mm, 22mm, 23mm, 25mm, etc.; the preset step ΔF is 1Hz - 2Hz. Optionally, the preset step ΔF can be: 1Hz, 1.1Hz, 1.2Hz, 1.3Hz, 1.4Hz, 1.5Hz, 1.6Hz, 1.7Hz, 1.8Hz, 1.9Hz, 2.0Hz, etc.

[0084] Specifically, S1. The outdoor unit starts to operate, and the compressor 20 starts to operate;

[0085] S2. The vibration damping element 2 starts to sway with the vibration of the compressor 20. The first acquisition module 40 acquires the vibration amplitude S of the vibration damping block 22, and the second acquisition module 50 acquires the current operating frequency Fi of the compressor 20;

[0086] S3. The judgment module 60 judges the magnitude relationship between S and S0, where S0 is the maximum sway preset amplitude of the vibration damping element 2, and the range of the preset amplitude S\(_0\) is 10mm - 25mm;

[0087] S4. When S < S0, it can be judged that the vibration of the compressor 20 is within the normal range, the compressor 20 operates normally, no measures need to be taken, no vibration abnormality occurs, and the air - conditioning system operates according to the normal logic;

[0088] When S > S0, it indicates that the vibration of the compressor 20 is abnormal, the vibration amplitude is too large, and the compressor 20 operates unstably. The control module 70 adjusts the operating frequency of the compressor 20, Fi = F0 + ΔF, to avoid the frequency point with large vibration. At the same time, the control module 70 records this operating frequency F0 and the operating conditions, and automatically shields this operating frequency under this condition to avoid subsequent vibration abnormality of the compressor 20.

[0089] S5. Judge the operating frequency of the adjusted compressor 20 and the swing amplitude value of the vibration damping element 2. If S < S0, the control step is completed, and the compressor 20 continues to operate according to the current operating logic. Otherwise, repeat the fourth step operation.

[0090] The compressor assembly according to a specific embodiment of the present invention is applied to the dual-core variable frequency heating technology and can achieve ultra-low temperature rapid heating. Now, refer to the comparison between the embodiment of the present invention and the prototype machine in the prior art shown in the following table. The vibration value of the compressor liquid storage tank and the positive pole noise value are significantly reduced. Table 1 shows the comparison of the tangential acceleration of the vibration of the compressor liquid storage tank, and Table 2 shows the noise values in all directions of the whole machine under the standard heating condition when the operating frequency of the compressor 20 is 110 Hz.

[0091] Table 1 Comparison of the tangential acceleration of the vibration of the compressor liquid storage tank (m / s2)

[0092]

[0093] Table 2 Noise comparison under the heating condition (compressor operates at 110 Hz)

[0094]

[0095] It can be seen from the test data that the shock absorber 10, the compressor assembly 100 and its control method proposed by the present invention can effectively suppress the vibration of the compressor 20, especially the vibration problem caused by high-frequency operation. As shown in Table 1, it solves the technical bottleneck problem that the vibration of the single-rotor compressor exceeds the standard and is difficult to control during high-speed operation in the industry. Since the vibration of the compressor 20 is reduced, the radiation noise generated by the vibration of the compressor 20 and the radiation noise of the pipeline vibration are also greatly reduced. As shown in Table 2, the sound quality of the refrigeration equipment has been greatly improved.

[0096] The refrigeration equipment according to the fourth aspect embodiment of the present invention includes the compressor assembly 100 according to the second aspect embodiment of the present invention described above.

[0097] The refrigeration equipment according to the embodiment of the present invention improves the reliability and stability of the refrigeration equipment, extends the service life of the refrigeration equipment, and reduces the vibration radiation noise generated during the operation of the refrigeration equipment by setting the compressor assembly 100 according to the second aspect embodiment described above.

[0098] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0100] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0101] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0102] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor assembly, characterized in that, Includes a vibration damper, the vibration damper comprising: A fixing component; multiple vibration damping elements, the multiple vibration damping elements being spaced apart from the fixing component, each vibration damping element including a flexible element and a vibration damping block, one end of the flexible element being connected to the fixing component and the other end being connected to the vibration damping block, and at least two of the vibration damping elements having different vibration damping frequencies; The fixing member is a cavity with a receiving cavity, and the plurality of vibration damping elements are disposed in the receiving cavity; The vibration damping block is suspended from the side wall and / or top wall of the receiving cavity by the flexible element; The vibration damper is located on the lower side of the liquid reservoir of the compressor assembly; The fixing member is a cavity with a receiving cavity. The top surface of the cavity is formed as a downwardly concave arc surface. The height of the cavity gradually decreases in the direction from the liquid reservoir toward the compressor.

2. The compressor assembly according to claim 1, characterized in that, At least some of the damping blocks have different masses, and / or at least some of the flexible elements have different lengths.

3. The compressor assembly according to claim 1, characterized in that, The damping block is spherical with a radius of 2mm-25mm; and / or the length of the flexible element is 3mm-50mm.

4. The compressor assembly according to claim 1, characterized in that, Also includes: The first acquisition module is used to acquire the vibration amplitude of the damping block; The second acquisition module is used to acquire the current operating frequency of the compressor; The judgment module is used to determine whether the vibration amplitude exceeds a preset amplitude. The control module controls the change of the compressor's current operating frequency when the vibration amplitude is greater than or equal to the preset amplitude.

5. The compressor assembly according to claim 4, characterized in that, When the vibration amplitude exceeds the preset amplitude, the judgment module determines the current operating frequency of the compressor as the abnormal vibration frequency, and the control module always controls the compressor to operate at a frequency other than the abnormal vibration frequency.

6. A control method for a compressor assembly, characterized in that, The compressor assembly includes the compressor assembly according to any one of claims 1-5, and the control method includes: Obtain the current operating frequency of the compressor and the vibration amplitude of the damping block; Determine whether the vibration amplitude exceeds a preset amplitude; When the vibration amplitude is greater than or equal to the preset amplitude, the current operating frequency of the compressor is changed.

7. The control method for the compressor assembly according to claim 6, characterized in that, Changing the current operating frequency of the compressor includes: The operating frequency of the compressor is adjusted to the current operating frequency ± a preset step size, where the preset step size is 1Hz-2Hz.

8. The control method for the compressor assembly according to claim 6, characterized in that, The control method further includes: When the vibration amplitude exceeds the preset amplitude, the current operating frequency of the compressor is determined to be the abnormal vibration frequency, and the compressor is controlled to operate at a frequency other than the abnormal vibration frequency.

9. A refrigeration device, characterized in that, Includes the compressor assembly according to any one of claims 1-5.

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