An intake assembly, a compressor

Abstract

This invention provides an intake assembly and a compressor. The intake assembly includes an intake pipe disposed on a stationary plate, a heat insulation pipe sleeved on the intake pipe, a gap between the intake pipe and the heat insulation pipe, one end of the heat insulation pipe being disposed on the stationary plate, and the other end of the heat insulation pipe extending outside the compressor housing. According to this invention, the technical problem of overheating during intake due to the intake pipe being exposed to the high-pressure chamber gas in the prior art can be solved.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, specifically relating to an air intake assembly and a compressor. Background Technology

[0002] Existing conventional high-pressure chamber compressors use a straight-insertion structure for the suction pipe. The suction pipe assembly is welded to the top cover and then snapped into the stationary disc suction port. The stationary disc suction port and the suction pipe assembly use a radial sealing fit. This method has three drawbacks:

[0003] 1) The part of the conventional intake tube between the top cover and the stationary plate is directly exposed to the gas in the high-pressure chamber, which causes the heat of the high-pressure overheated gas to be directly transferred to the intake tube, resulting in overheating during intake and affecting compression efficiency.

[0004] 2) The suction pipe assembly is snapped into the suction port of the stationary plate, which occupies the suction port volume, increases suction resistance, reduces fluid mass flow rate, and can easily lead to a decrease in compressor cooling capacity and affect compressor performance.

[0005] 3) The suction pipe assembly is welded integrally with the top cover to form the top cover assembly, which is then snapped into the suction port of the stationary disc. Because there is a clearance fit between the top cover and the housing, and between the suction pipe and the suction port of the stationary disc, over-constraint can easily lead to the suction pipe assembly being inserted at an angle, causing resonance noise between the top cover and the pump body.

[0006] Because the intake pipe in the existing technology is exposed to the gas in the high-pressure chamber, there are technical problems such as overheating during intake. Therefore, this invention studies and designs an intake assembly and a compressor. Summary of the Invention

[0007] Therefore, the present invention provides an intake assembly and a compressor that can solve the technical problem in the prior art where the intake pipe is exposed to the gas in the high-pressure chamber, resulting in overheating of the intake.

[0008] To address the aforementioned problems, the present invention provides an air intake assembly, comprising: an air intake pipe disposed on a stationary plate, a heat insulation pipe sleeved on the air intake pipe, a gap between the air intake pipe and the heat insulation pipe, one end of the heat insulation pipe being disposed on the stationary plate, and the other end of the heat insulation pipe extending outside the compressor housing.

[0009] In some embodiments, the suction assembly includes a mounting plate, the suction pipe and the heat insulation pipe are disposed on the mounting plate, the mounting plate is disposed on the stationary plate, and the mounting plate is provided with a through hole that communicates with the suction pipe.

[0010] In some embodiments, the mounting plate has a sealing element at one end facing the stationary disk, and the mounting plate has multiple connection holes. The mounting plate and the stationary disk are connected by a fixing element and the connection holes.

[0011] In some embodiments, the mounting plate is further provided with a plurality of positioning holes, which match the positioning pins on the stationary plate.

[0012] In some embodiments, the mounting plate is further provided with an air guide pipe, which is sleeved outside the heat insulation pipe and has an air inlet.

[0013] In some embodiments, the air guide pipe and the heat insulation pipe are arranged at intervals, and the air guide pipe and the heat insulation pipe are connected by an elastic element, and the air inlet is arranged close to the stationary plate.

[0014] In some embodiments, the inner wall of the air duct is provided with a protrusion, and one end of the elastic element is disposed on the protrusion.

[0015] In some embodiments, the intake assembly includes a cover plate that covers the stationary disc, and the air guide tube is sleeved on the cover plate.

[0016] In some embodiments, one end of the air duct extends through the cover plate, and one end of the air duct is located between the housing and the cover plate.

[0017] The present invention also provides a compressor that includes the aforementioned suction assembly.

[0018] The intake assembly and compressor provided by this invention have the following beneficial effects:

[0019] A heat insulation tube is fitted onto the suction pipe, and a gap exists between the suction pipe and the heat insulation tube to prevent the suction pipe from directly contacting the high-pressure overheated gas in the high-pressure chamber of the compressor, thereby preventing the problem of suction overheating. Furthermore, since one end of the heat insulation tube is set on the stationary plate and the other end of the heat insulation tube extends outside the compressor housing, air from outside the compressor can enter the gap between the suction pipe and the heat insulation tube. When the heat insulation tube comes into contact with the high-pressure overheated gas in the high-pressure chamber of the compressor, the air ring in the gap can carry away the heat at the suction pipe, further preventing suction overheating. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the air intake component of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the mounting plate in the air intake assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the air intake component of the present invention. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of the air intake component of the present invention. Figure 3 ;

[0025] Figure 5 This is the assembly structure of the intake component of the present invention. Figure 1 ;

[0026] Figure 6 This is the assembly structure of the intake component of the present invention. Figure 2 ;

[0027] Figure 7 This is the assembly structure of the intake component of the present invention. Figure 3 ;

[0028] Figure 8 This is the assembly structure of the intake component of the present invention. Figure 4 ;

[0029] Figure 9 This is the assembly structure of the intake component according to the second embodiment of the present invention. Figure 1 ;

[0030] Figure 10 This is a schematic diagram of the structure of the cover plate in the air intake assembly according to the second embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the elastic element in the air intake assembly according to the second embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the air guide tube in the air intake assembly of the second embodiment of the present invention. Figure 1 ;

[0033] Figure 13 This is a schematic diagram of the air guide tube in the air intake assembly of the second embodiment of the present invention. Figure 2 ;

[0034] Figure 14 This is a schematic diagram of the air intake component according to the second embodiment of the present invention;

[0035] Figure 15 This is the assembly structure of the intake component according to the second embodiment of the present invention. Figure 2 .

[0036] The attached figures are labeled as follows:

[0037] 1. Intake pipe; 2. Mounting plate; 3. Connection hole; 4. Seal; 5. Positioning hole; 6. Through hole; 7. Heat insulation pipe; 8. Static plate; 9. Positioning pin; 10. Fixing component; 11. Housing; 12. Air guide pipe; 13. Elastic component; 14. Cover plate; 15. Air inlet; 16. Protrusion. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0040] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0041] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0042] See also Figure 1-15 As shown, according to an embodiment of the present invention, an air intake assembly is provided, comprising: an air intake pipe 1, the air intake pipe 1 being disposed on a stationary plate 8, a heat insulation pipe 7 being sleeved on the air intake pipe 1, a gap between the air intake pipe 1 and the heat insulation pipe 7, one end of the heat insulation pipe 7 being disposed on the stationary plate 8, and the other end of the heat insulation pipe 7 extending outside the compressor housing 11. In this technical solution, by sleeved with the heat insulation pipe 7 on the air intake pipe 1, and by creating a gap between the air intake pipe 1 and the heat insulation pipe 7, direct contact between the air intake pipe 1 and the high-pressure superheated gas in the high-pressure chamber of the compressor is avoided, thereby preventing the problem of air intake overheating. Furthermore, since one end of the heat insulation pipe 7 is disposed on the stationary plate 8 and the other end of the heat insulation pipe 7 extends outside the compressor housing 11, air from outside the compressor can enter the gap between the air intake pipe 1 and the heat insulation pipe 7. When the heat insulation pipe 7 contacts the high-pressure superheated gas in the high-pressure chamber of the compressor, the air ring within the gap can carry away the heat from the air intake pipe, further preventing air intake overheating.

[0043] In some embodiments, the suction assembly includes a mounting plate 2, with the suction pipe 1 and the heat insulation pipe 7 disposed on the mounting plate 2. The mounting plate 2 is mounted on the stationary plate 8, and a through hole 6 is provided on the mounting plate 2, the through hole 6 communicating with the suction pipe 1. In this technical solution, the diameter of the through hole 6 is equal to the inner diameter of the suction pipe 1. Of course, the diameter of the through hole 6 and the inner diameter of the suction pipe 1 may not be equal, as long as the diameter of the through hole 6 is smaller than the inner and outer diameters of the suction pipe 1.

[0044] In some embodiments, a sealing element 4 is provided at the end of the mounting plate 2 facing the stationary disk 8, and multiple connecting holes 3 are provided on the mounting plate 2. The mounting plate 2 and the stationary disk 8 are connected by a fixing element 10 and the connecting holes 3. In this technical solution, the sealing element 4 is provided at the end of the mounting plate 2 facing the stationary disk 8. The sealing element is a sealing ring. An annular groove can be provided at the end of the mounting plate 2 facing the stationary disk 8, and the sealing element 4 is installed in the annular groove. The sealing element achieves a seal between the mounting plate 2 and the stationary disk 8. Multiple protrusions or lugs can be provided on the outer peripheral wall of the mounting plate 2, and the connecting holes 3 are provided on the protrusions or lugs. The mounting plate 2 and the stationary disk 8 are fixedly connected by the fixing element 10 and the connecting holes 3.

[0045] In some embodiments, the mounting plate 2 is further provided with a plurality of positioning holes 5, which match the positioning pins 9 on the stationary plate 8. In this technical solution, when the suction assembly of the present invention is installed, it is positioned by the positioning holes 5 and the positioning pins 9 on the stationary plate 8, so that the suction port of the mounting plate 2 and the stationary plate 8 are aligned, preventing the suction assembly from interfering with the stationary plate.

[0046] The suction assembly of this invention, through the mounting plate 2, prevents the suction tube from entering the suction port of the stationary disc and occupying the suction port volume. At the same time, the sealing structure on the end face of the mounting plate 2 ensures the verticality of the assembly. This avoids the potential interference problem between the conventional straight-insertion suction tube and the suction port of the stationary disc.

[0047] The suction assembly of the present invention comprises a suction pipe 1 mounted on a mounting plate 2, wherein a heat insulation pipe 7 is welded to the mounting plate 2 to form a suction pipe assembly. The heat insulation pipe 7 is a hollow or annular structure, and can be a cylinder, cone, or other annular or hollow three-dimensional structure. The minimum inner diameter of the heat insulation pipe 7 is greater than the outer diameter of the suction pipe 1, and the maximum outer diameter of the heat insulation pipe 7 is less than the outer diameter of the mounting plate 2. The suction pipe assembly is fixed to the upper end face of the suction port of the stationary plate 8 by a fixing member 10, and is aligned with the suction port of the stationary plate by a positioning pin 9 to prevent interference between the suction pipe assembly and the stationary plate, solve abnormal vibration noise of the pump body, eliminate suction throttling resistance, and improve the volumetric efficiency of the compressor. The fixing member 10 is a screw, and the upper cover of the compressor housing 11 is fastened into the suction pipe assembly through the upper cover suction port. The suction pipe assembly is welded to the upper cover by the heat insulation pipe 7, which isolates the suction pipe 1 from the high-temperature and high-pressure gas inside the compressor. The heat can be removed from the suction pipe by air circulation to prevent overheating of the suction.

[0048] A common suction tube is a cylindrical tube inserted into the suction port of the stationary disc, using a radial seal, which occupies the suction port volume. It's as if the suction port diameter has been reduced, creating a throttling effect.

[0049] Regarding volumetric efficiency, assuming there is no heat insulation pipe 7, the high-temperature gas directly heats the intake refrigerant, causing the gas volume to expand, resulting in a decrease in density and a reduction in the amount of refrigerant compressed per unit volume, thus lowering volumetric efficiency. This is similar to a low-pressure chamber compressor, where the refrigerant's heating by the motor leads to a loss of pump volumetric efficiency, becoming a deficiency in the low-pressure chamber structure.

[0050] In some embodiments, the mounting plate 2 is further provided with a gas guide pipe 12, which is sleeved outside the heat insulation pipe 7, and has an air inlet 15. In this technical solution, the gas discharged from the compressor pump body enters between the gas guide pipe 12 and the heat insulation pipe 7 through the air inlet 15 via the gas guide pipe 12. Under the action of high-pressure gas, the gas spirals upward between the gas guide pipe 12 and the heat insulation pipe 7, and under the action of centrifugal force, it plays a role in oil-gas separation.

[0051] In some embodiments, the air guide pipe 12 and the heat insulation pipe 7 are arranged at intervals, and the air guide pipe 12 and the heat insulation pipe 7 are connected by an elastic element 13. The air inlet 15 is arranged close to the stationary plate 8. In this technical solution, the elastic element 13 is a spiral plate spring, that is, the cylindrical body of the existing spring is replaced with a rectangular plate body. When the compressor is working normally, the gas discharged from the compressor pump body enters the space between the air guide pipe 12 and the heat insulation pipe 7 through the air inlet 15. Under the action of the elastic element 13, the collision area of ​​the oil-gas mixture increases, which can further improve the oil-gas separation effect.

[0052] In some embodiments, the inner wall of the air guide pipe 12 is provided with a protrusion 16, and one end of the elastic member 13 is disposed on the protrusion 16. In this technical solution, the elastic member 13 is fixed by the protrusion 16 to prevent the elastic member 13 from shifting under the action of high-pressure gas, thus affecting the normal operation of the compressor. The protrusion 16 can be located near the end of the air guide pipe 12 facing the stationary plate 8, and the minimum height of the elastic member 13 after compression is greater than the height of the air inlet 15.

[0053] In some embodiments, the intake assembly includes a cover plate 14, which covers the stationary disc 8, and the air guide pipe 12 is sleeved on the cover plate 14. In this technical solution, the cover plate 14 allows all the oil-gas mixture at the compressor pump body discharge to enter the space between the air guide pipe 12 and the heat insulation pipe 7 through the air inlet 15 for oil-gas separation, thereby improving the oil-gas separation effect.

[0054] In some embodiments, one end of the air guide pipe 12 penetrates through the cover plate 14, and one end of the air guide pipe 12 is located between the housing 11 and the cover plate 14. In this technical solution, by having one end of the air guide pipe 12 penetrate the cover plate 14 and be located between the housing 11 and the cover plate 14, it is ensured that the gas after oil-gas separation is discharged from the compressor housing 11 through the compressor exhaust port.

[0055] The second embodiment of the present invention relates to an air intake assembly. The air guide pipe 12 is cylindrical, with a stepped surface and an air inlet 15; the air inlet 15 of the air guide pipe 12 faces the pump body exhaust port; the air guide pipe 12 is welded and fixed to the mounting plate 2; the elastic element 13 is installed between the heat insulation pipe 7 and the air guide pipe 12, and its bottom is fixed to the protrusion 16 of the air guide pipe 12; the cover plate 14 is installed on the stationary plate 8. When the compressor is working normally, gas is discharged from the pump body, passes through the air inlet 15 of the air guide pipe 12, and undergoes centrifugal action by the elastic element 13, achieving an oil-gas separation effect, before entering the compressor housing and finally being discharged from the exhaust pipe. When the compressor stops, high-pressure gas backflows. At this time, the elastic element 13 is subjected to a reverse force, squeezing together and blocking the air inlet 15 of the air guide pipe 12, preventing high-pressure gas from entering the air inlet 15 of the air guide pipe 12, thus preventing reverse rotation.

[0056] The suction assembly of this invention avoids direct contact between the suction pipe assembly and high-pressure gas, solving the overheating problem of the suction refrigerant and improving the compressor's compression efficiency. The suction pipe assembly, secured by end-face sealing and a locating pin, ensures aligned assembly with the stationary disc's suction port, resolving interference between them. It does not occupy suction port volume, avoiding throttling resistance, effectively increasing fluid mass flow rate, and enhancing the overall compressor capacity. The compressor's cooling capacity is increased, and the sealing structure of the mounting plate 2, combined with the locating pin 9, resolves interference between the suction pipe assembly and the stationary disc, reducing pump vibration and noise.

[0057] The present invention also provides a compressor including the above-described suction assembly.

[0058] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0059] The above description is merely 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 within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An air intake assembly, characterized by: The application relates to a suction assembly. The suction pipe (1) is provided with a heat insulation pipe (7), and a gap is formed between the suction pipe (1) and the heat insulation pipe (7); one end of the heat insulation pipe (7) is arranged on the static disc (8), and the other end of the heat insulation pipe (7) extends out of the shell (11) of the compressor; Air outside the compressor can enter the gap between the suction pipe (1) and the heat insulation pipe (7); The suction assembly comprises a mounting plate (2), the suction pipe (1) and the heat insulation pipe (7) are arranged on the mounting plate (2), the mounting plate (2) is arranged on the static disc (8), a through hole (6) is arranged on the mounting plate (2), and the through hole (6) is communicated with the suction pipe (1); A gas guide pipe (12) is further arranged on the mounting plate (2) and sleeved outside the heat insulation pipe (7), and an air inlet (15) is formed in the gas guide pipe (12); The gas guide pipe (12) is arranged in a spaced mode with the heat insulation pipe (7), the gas guide pipe (12) and the heat insulation pipe (7) are connected through an elastic element (13), and the air inlet (15) is arranged close to the static disc (8); the elastic element (13) is a helical spring; A convex portion (16) is arranged on the inner wall of the gas guide pipe (12), and one end of the elastic element (13) is arranged on the convex portion (16).

2. The air intake assembly of claim 1, wherein: One end of the mounting plate (2) is provided with a sealing element (4) facing the static disc (8), a plurality of connecting holes (3) are arranged on the mounting plate (2), and the mounting plate (2) and the static disc (8) are connected through a fixing element (10) and the connecting holes (3).

3. The air intake assembly of claim 2, wherein: A plurality of positioning holes (5) are further arranged on the mounting plate (2) and matched with positioning pins (9) on the static disc (8).

4. The air intake assembly of claim 1, wherein: The suction assembly comprises a cover plate (14), the cover plate (14) is arranged on the static disc (8), and the gas guide pipe (12) is sleeved on the cover plate (14).

5. The air intake assembly of claim 4, wherein: One end of the gas guide pipe (12) penetrates through the cover plate (14), and the one end of the gas guide pipe (12) is located between the shell (11) and the cover plate (14).

6. A compressor characterized by, The application further discloses a compressor comprising the suction assembly. The application further discloses a compressor comprising the suction assembly.

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