A scroll compressor structure

Abstract

The present invention discloses a scroll compressor structure, comprising: a front housing and a stationary disk. The front housing and the stationary disk are covered and arranged together. A high-pressure chamber is enclosed between the front housing and the stationary disk. A counterbore is provided on the front housing, and a fastener is embedded inside the counterbore. The fastener is used to fixedly connect the front housing and the stationary disk. An unloading valve is further arranged in the counterbore. A filtering flow channel is formed on the side wall of the counterbore. The filtering flow channel communicates the high-pressure chamber with the inner cavity of the counterbore. The inner cavity of the counterbore is also communicated with the inner cavity of the unloading valve. This structure can improve the overall modal of the high-pressure chamber and avoid resonance under the premise of ensuring light weight, thereby strengthening the overall structural stiffness, greatly reducing the high-frequency airflow sound, and improving the sound quality of the compressor. In addition, the present invention can also improve the rigidity and service life performance of the compressor and save the process processing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a scroll compressor structure. Background Art

[0002] During the actual work and exhaust process of the compressor, it may resonate due to the excitation of the inherent mode of the body structure (such as poor rigidity of the front shell surface or resonance of the overall structure mode of the front shell static disk, etc.), resulting in harsh high-frequency airflow noise on the exhaust side of the compressor. Summary of the Invention

[0003] Aiming at the above problems existing in the prior art, a scroll compressor structure is provided.

[0004] The specific technical solution is as follows:

[0005] A scroll compressor structure mainly includes: a front shell and a static disk;

[0006] The front shell and the static disk are covered and arranged, a high-pressure chamber is enclosed between the front shell and the static disk, a counterbore is provided on the front shell, a fastener is embedded inside the counterbore, the fastener is used to fixedly connect the front shell and the static disk, an unloading valve is further arranged in the counterbore, a filtering flow channel is opened on the side wall of the counterbore, the filtering flow channel communicates the high-pressure chamber with the inner cavity of the counterbore, and the inner cavity of the counterbore is also communicated with the inner cavity of the unloading valve.

[0007] In the above scroll compressor structure, it further has the following feature that the counterbore is arranged at the first-order modal vibration position of the front shell.

[0008] In the above scroll compressor structure, it further has the following feature that a preset distance is spaced between the unloading valve and the fastener.

[0009] In the above scroll compressor structure, it further has the following feature that one end of the unloading valve facing the fastener is threadedly connected to the front shell, and the other end of the unloading valve is sealingly connected to the front shell.

[0010] In the above scroll compressor structure, it further has the following feature that the unloading valve is an overall stepped column, including a threaded section and a head, and the diameter of the threaded section is smaller than the diameter of the head;

[0011] The counterbore is arranged as a stepped hole, the stepped hole includes a first hole and a second hole, the diameter of the first hole is smaller than the diameter of the second hole, and the first hole is close to the static disk;

[0012] The threaded section is threadedly connected to the first hole, the head is partially or entirely located in the second hole, and a sealing ring is clamped between the stepped surface of the unloading valve and the step surface of the counterbore.

[0013] In the above-mentioned scroll compressor structure, there is also such a feature that the inner cavity of the unloading valve penetrates through the threaded section and the head.

[0014] In the above-mentioned scroll compressor structure, there is also such a feature that the shell surface of the first hole is attached to the stationary disk.

[0015] In the above-mentioned scroll compressor structure, there is also such a feature that the stationary disk has a high-pressure exhaust port, and the high-pressure exhaust port communicates with the high-pressure chamber.

[0016] In the above-mentioned scroll compressor structure, there is also such a feature that the fastener is a screw.

[0017] The positive effect of the above technical solution is:

[0018] A scroll compressor structure provided by the present invention is provided with a counterbore on the front housing, a fastener and a relief valve are arranged in the counterbore, a filtering flow channel is arranged on the side wall of the counterbore, the filtering flow channel communicates the high-pressure chamber with the inner cavity of the counterbore, and the inner cavity of the counterbore also communicates with the inner cavity of the relief valve. On the premise of ensuring light weight, the overall mode of the high-pressure chamber is improved, and resonance is avoided, thereby strengthening the overall structural stiffness. The setting of the filtering flow channel can prevent mis-unloading, greatly reduce the high-frequency airflow sound, and improve the sound quality of the compressor. In addition, the present invention can also improve the rigidity and service life performance of the compressor and save the process processing cost. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the scroll compressor structure provided by the present invention;

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the scroll compressor structure provided by the present invention;

[0021] Figure 3 For Figure 2 The partial structural schematic diagram in.

[0022] In the drawings: 1. Front housing; 11. Counterbore; 111. First hole; 112. Second hole; 113. Filtering flow channel; 114. Inner cavity of the counterbore; 2. Stationary disk; 21. High-pressure exhaust port; 3. High-pressure chamber; 4. Fastener; 5. Relief valve; 51. Threaded section; 52. Head; 53. Inner cavity of the relief valve; 6. Sealing ring. Detailed Embodiments

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the following further details the present invention through embodiments and in conjunction with the drawings. 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.

[0024] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" as used in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] Please refer to Figures 1 to 3 , the present invention discloses a scroll compressor structure, which includes: a front housing 1 and a stationary disk 2.

[0027] Specifically, the front housing 1 and the stationary disk 2 are covered and arranged, and a high-pressure chamber 3 is enclosed between the front housing 1 and the stationary disk 2. The stationary disk 2 has a high-pressure exhaust port 21, and the high-pressure exhaust port 21 communicates with the high-pressure chamber 3. During the operation of the compressor, high-pressure gas refrigerant (refrigerant, also known as refrigerant, is the medium for energy conversion in various heat engines) is discharged from the high-pressure exhaust port 21 of the stationary disk 2 and enters the high-pressure chamber 3 between the front housing 1 and the stationary disk 2.

[0028] A counterbore 11 is provided on the front housing 1, and a fastener 4 is embedded inside the counterbore 11. The fastener 4 is used to fixedly connect the front housing 1 and the stationary disk 2. Optionally, the fastener 4 is a screw.

[0029] A pressure relief valve 5 is also provided in the counterbore 11.

[0030] One end of the pressure relief valve 5 facing the fastener 4 is threadedly connected to the front housing 1, and the other end of the pressure relief valve 5 is sealingly connected to the front housing 1.

[0031] Specifically, in this embodiment, the bleed-off valve 5 is an overall stepped column, including a threaded section 51 and a head 52. The diameter of the threaded section 51 is smaller than that of the head 52, and the threaded section 51 is close to the stationary disk 2.

[0032] The counterbore 11 is set as a stepped hole, which includes a first hole 111 and a second hole 112. The diameter of the first hole 111 is smaller than that of the second hole 112, and the first hole 111 is close to the stationary disk 2.

[0033] The threaded section 51 is threadedly connected to the first hole 111. Optionally, the shell surface of the first hole 111 is in contact with the stationary disk 2. Part or all of the head 52 is located within the second hole 112. For example, in this embodiment, the head 52 is higher than the second hole 112 of the counterbore 11, and part of the head 52 is located within the second hole 112.

[0034] A filter flow channel 113 is provided on the side wall of the counterbore 11. The filter flow channel 113 communicates the high-pressure chamber 3 with the inner cavity 114 of the counterbore 11, and the inner cavity 114 of the counterbore 11 is also communicated with the inner cavity 53 of the bleed-off valve 5.

[0035] Optionally, in this embodiment, the inner cavity 53 of the bleed-off valve 5 penetrates through the threaded section 51 and the head 52.

[0036] Optionally, in this embodiment, a preset distance is provided between the bleed-off valve 5 and the fastener 4. The space between the bleed-off valve 5 and the fastener 4 is the inner cavity 114 of the counterbore 11.

[0037] The high-pressure chamber 3 is communicated with the inner cavity 114 of the counterbore 11 through the filter flow channel 113, and the inner cavity 114 of the counterbore 11 is also communicated with the inner cavity 53 of the bleed-off valve 5. The refrigerant enters the large-diameter high-pressure chamber 3 from the small-diameter high-pressure exhaust port 21, and the flow rate of the turbulent high-pressure refrigerant is reduced and buffered. If the rigidity of the front housing 1 of the compressor is poor at this time, its natural mode will be excited by the high-pressure refrigerant that flushes into the high-pressure chamber 3 and then beats against the inner walls of the front housing 1 and the stationary disk 2. Considering the overall structural design of the compressor and the requirements for the unit cost, the front housing 1 often does not have high rigidity performance. In the present invention, a counterbore 11 is provided on the front housing 1, and the front housing 1 and the stationary disk 2 are connected by a fastener 4, which can improve the mode and avoid resonance at the same time, thereby strengthening the overall structural stiffness. At the same time, the bleed-off valve 5 is arranged in the counterbore 11 above the fastener 4 ( Figure 2Above (in the upper part), the space of the counterbore 11 is utilized to the maximum extent, and the inner cavity of the unloading valve 5, the inner cavity of the counterbore 11, and the filtering flow channel 113 form an unloading channel, reducing the high-frequency airflow noise of the front shell 1 mode. This structure has little impact on the overall depth and volume of the high-pressure chamber 3, so the problem of regenerative noise will not occur. In addition, the inner cavity 114 of the counterbore 11 is connected to the high-pressure chamber 3 through a small filtering flow channel 113. The high-pressure refrigerant flows into the inner cavity 114 of the counterbore 11 and the unloading valve 5 through the small filtering flow channel 113, which can filter and buffer the instantaneous high-pressure fluctuation, playing a role in preventing mis-unloading. This structure can also eliminate the processing technology of drilling holes at other positions of the front shell 1 to install the unloading valve 5, saving the processing technology due to improving the high-frequency noise.

[0038] Preferably, a sealing ring 6 is clamped between the stepped surface of the unloading valve 5 and the stepped surface of the counterbore 11. The sealing between the unloading valve 5 and the counterbore 11 is achieved through the sealing ring 6, enabling the high-pressure refrigerant to smoothly flow into the inner cavity of the unloading valve 5 and avoiding leakage.

[0039] Preferably, in this embodiment, the counterbore 11 is arranged at the first-order modal vibration position of the front shell 1, which can improve the mode and avoid resonance, thereby strengthening the stiffness of the overall structure.

[0040] In the present invention, a counterbore 11 is provided on the front shell 1, a fastener 4 and an unloading valve 5 are arranged in the counterbore 11, a filtering flow channel 113 is formed on the side wall of the counterbore 11, the filtering flow channel 113 communicates the high-pressure chamber 3 with the inner cavity of the counterbore 11, and the inner cavity of the counterbore 11 is also communicated with the inner cavity of the unloading valve 5. On the premise of ensuring light weight, the overall mode of the high-pressure chamber 3 is improved, resonance is avoided, thereby strengthening the stiffness of the overall structure, greatly reducing the high-frequency airflow sound, and improving the sound quality of the compressor. In addition, the present invention can also improve the rigidity and service life performance of the compressor and save the process processing cost.

[0041] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0042] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A scroll compressor structure, characterized in that, comprising: a front housing and a stationary disk; The front housing and the stationary disk are covered and arranged, a high-pressure chamber is enclosed between the front housing and the stationary disk, a counterbore is provided on the front housing, a fastener is embedded inside the counterbore, the fastener is used to fixedly connect the front housing and the stationary disk, an unloading valve is further provided in the counterbore, a filtering flow channel is provided on the side wall of the counterbore, the filtering flow channel communicates the high-pressure chamber with the inner cavity of the counterbore, and the inner cavity of the counterbore is further communicated with the inner cavity of the unloading valve.

2. The scroll compressor structure according to claim 1, characterized in that, the counterbore is arranged at the first-order modal vibration position of the front housing.

3. The scroll compressor structure according to claim 1, characterized in that, a preset distance is provided between the unloading valve and the fastener.

4. The scroll compressor structure according to claim 1, characterized in that, one end of the unloading valve facing the fastener is threadedly connected to the front housing, and the other end of the unloading valve is sealingly connected to the front housing.

5. The scroll compressor structure according to claim 4, characterized in that, the unloading valve is an overall stepped column, including a threaded section and a head, and the diameter of the threaded section is smaller than the diameter of the head; the counterbore is arranged as a stepped hole, the stepped hole includes a first hole and a second hole, the diameter of the first hole is smaller than the diameter of the second hole, and the first hole is close to the stationary disk; the threaded section is threadedly connected to the first hole, the head is partially or entirely located in the second hole, and a sealing ring is clamped between the stepped surface of the unloading valve and the step surface of the counterbore.

6. The scroll compressor structure according to claim 5, characterized in that, the inner cavity of the unloading valve penetrates through the threaded section and the head.

7. The scroll compressor structure according to claim 5, characterized in that, the shell surface of the first hole is in contact with the stationary disk.

8. The scroll compressor structure according to any one of claims 1 to 7, characterized in that, the stationary disk has a high-pressure exhaust port, and the high-pressure exhaust port communicates with the high-pressure chamber.

9. The scroll compressor structure according to claim 8, characterized in that, the fastener is a screw.

Images