Air suction assembly and compressor

Abstract

The invention provides an air suction assembly and a compressor. The air suction assembly comprises an air suction pipe, the air suction pipe is arranged on a static disc, the air suction pipe is sleeved with a heat insulation pipe, a gap is formed between the air suction pipe and the heat insulation pipe, one end of the heat insulation pipe is arranged on the static disc, and the other end of the heat insulation pipe extends out of a shell of the compressor. According to the air suction device, the technical problem that in the prior art, an air suction pipe is exposed in high-pressure cavity air, and sucked air is overheated can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to an air suction component and a compressor. Background Art

[0002] The existing conventional high-pressure chamber compressor suction pipe adopts a straight-insert structure. The suction pipe assembly is welded to the upper cover and then buckled into the static disk suction port. The static disk suction port and the suction pipe assembly are matched with radial sealing. This method has three defects:

[0003] 1) The part of the conventional suction pipe between the upper cover and the static disk is directly exposed to the high-pressure cavity gas, so that the heat of the high-pressure superheated gas is directly transferred to the suction pipe, resulting in the problem of overheating of the suction gas, which affects the compression efficiency;

[0004] 2) The suction pipe assembly is buckled into the suction port of the static disk, occupying the suction port volume, increasing the suction resistance, reducing the fluid mass flow rate, and easily causing the compressor cooling capacity to decrease, affecting the compressor performance;

[0005] 3) The suction pipe assembly is welded to the upper cover to form the upper cover assembly, which is then buckled into the suction port of the static disk. Since there is clearance between the upper cover and the shell, the suction pipe and the suction port of the static disk, there is over-constraint, which can easily lead to the tilted insertion of the suction pipe assembly, causing resonance noise problems between the upper cover and the pump body.'

[0006] Since the suction pipe in the prior art is exposed to the high-pressure cavity gas, there are technical problems such as suction overheating, so the present invention studies and designs an suction component and a compressor. Summary of the invention

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

[0008] In order to solve the above problems, the present invention provides an air intake assembly, including: an air intake pipe, wherein the air intake pipe is arranged on a stator plate, an insulation tube is sleeved on the air intake pipe, a gap is provided between the air intake pipe and the insulation tube, one end of the insulation tube is arranged on the stator plate, and the other end of the insulation tube extends out of the compressor shell.

[0009] In some embodiments, the air intake assembly includes a mounting plate, the air intake pipe and the insulation pipe are arranged on the mounting plate, the mounting plate is arranged on the static plate, the mounting plate is provided with a through hole, and the through hole is connected to the air intake pipe.

[0010] In some embodiments, a sealing member is provided at one end of the mounting plate facing the static disk, a plurality of connecting holes are provided on the mounting plate, and the mounting plate is connected to the static disk via a fixing member and the connecting holes.

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

[0012] In some embodiments, an air duct is further provided on the mounting plate, the air duct is sleeved outside the thermal insulation tube, and an air inlet is opened on the air duct.

[0013] In some embodiments, the air guide pipe and the thermal insulation pipe are arranged at an interval, and the air guide pipe and the thermal insulation pipe are connected via an elastic member, and the air inlet is arranged close to the stator disk.

[0014] In some embodiments, a protrusion is disposed on the inner wall of the airway tube, and one end of the elastic member is disposed on the protrusion.

[0015] In some embodiments, the air suction assembly includes a cover plate, the cover plate is disposed on the static plate, and the air guide tube is sleeved on the cover plate.

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

[0017] The present invention also provides a compressor, which comprises the aforementioned air intake assembly.

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

[0019] An insulation tube is sleeved on the intake pipe, and a gap is provided between the intake pipe and the insulation tube to prevent the intake pipe from directly contacting the high-pressure superheated gas in the high-pressure chamber of the compressor, thereby preventing the problem of intake air overheating. In addition, since one end of the insulation tube is arranged on the stator plate and the other end of the insulation tube extends out of the compressor shell, the air outside the compressor can enter the gap between the intake pipe and the insulation tube. When the insulation tube contacts the high-pressure superheated gas in the high-pressure chamber of the compressor, the air ring in the gap can take away the heat from the intake pipe, thereby further preventing intake air overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] Figure 1 The structure of the air intake assembly of the present invention is shown in FIG. Figure 1 ;

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

[0023] Figure 3 The structure of the air intake assembly of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 4 The structure of the air intake assembly of the present invention is shown in FIG. Figure 3 ;

[0025] Figure 5 The assembly structure of the air intake assembly of the present invention is Figure 1 ;

[0026] Figure 6 The assembly structure of the air intake assembly of the present invention is Figure 2 ;

[0027] Figure 7 The assembly structure of the air intake assembly of the present invention is Figure 3 ;

[0028] Figure 8 The assembly structure of the air intake assembly of the present invention is Figure 4 ;

[0029] Fig. 9 The assembly structure of the air intake assembly of the second embodiment of the present invention is Figure 1 ;

[0030] Fig.10 is a structural schematic diagram of a cover plate in an air intake assembly according to a second embodiment of the present invention;

[0031] Fig.11 is a schematic structural diagram of an elastic member in an air intake assembly according to a second embodiment of the present invention;

[0032] Fig.12 The structure of the air guide pipe in the air intake assembly of the second embodiment of the present invention is schematically shown. Figure 1 ;

[0033] Fig.13 The structure of the air guide pipe in the air intake assembly of the second embodiment of the present invention is schematically shown. Figure 2 ;

[0034] Fig.14 is a schematic structural diagram of an air intake assembly according to a second embodiment of the present invention;

[0035] Fig.15 The assembly structure of the air intake assembly of the second embodiment of the present invention is Figure 2 .

[0036] The accompanying drawings are marked as follows:

[0037] 1. Intake pipe; 2. Mounting plate; 3. Connection hole; 4. Seal; 5. Positioning hole; 6. Through hole; 7. Insulation pipe; 8. Static plate; 9. Positioning pin; 10. Fixing piece; 11. Shell; 12. Air guide pipe; 13. Elastic piece; 14. Cover plate; 15. Air inlet; 16. Protrusion. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

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

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present 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 is arranged on a stator plate 8, an insulated pipe 7 is sleeved on the air intake pipe 1, a gap is formed between the air intake pipe 1 and the insulated pipe 7, one end of the insulated pipe 7 is arranged on the stator plate 8, and the other end of the insulated pipe 7 extends out of the shell 11 of the compressor. In this technical solution, the insulated pipe 7 is sleeved on the air intake pipe 1, and a gap is formed between the air intake pipe 1 and the insulated pipe 7 to prevent the air intake pipe 1 from directly contacting with the high-pressure superheated gas in the high-pressure chamber of the compressor, thereby preventing the problem of air intake overheating. In addition, since one end of the insulated pipe 7 is arranged on the stator plate 8, and the other end of the insulated pipe 7 extends out of the shell 11 of the compressor, the air outside the compressor can enter the gap between the air intake pipe 1 and the insulated pipe 7. When the insulated pipe 7 contacts with the high-pressure superheated gas in the high-pressure chamber of the compressor, the air ring in the gap can take away the heat from the air intake pipe, further preventing air intake overheating.

[0043] In some embodiments, the air intake assembly includes a mounting plate 2, the air intake pipe 1 and the heat insulation pipe 7 are arranged on the mounting plate 2, the mounting plate 2 is arranged on the static plate 8, and a through hole 6 is arranged on the mounting plate 2, and the through hole 6 is connected to the air intake pipe 1. In this technical solution, the diameter of the through hole 6 is equal to the inner diameter of the air intake pipe 1. Of course, the diameter of the through hole 6 may not be equal to the inner diameter of the air intake pipe 1, as long as the diameter of the through hole 6 is smaller than the inner and outer diameters of the air intake pipe 1.

[0044] In some embodiments, a sealing member 4 is provided at one end of the mounting plate 2 facing the static disk 8, a plurality of connecting holes 3 are provided on the mounting plate 2, and the mounting plate 2 and the static disk 8 are connected via a fixing member 10 and the connecting holes 3. In this technical solution, a sealing member 4 is provided at one end of the mounting plate 2 facing the static disk 8, and the sealing member is a sealing ring. An annular groove may be provided at one end of the mounting plate 2 facing the static disk 8, and the sealing member 4 is installed in the annular groove. The sealing between the mounting plate 2 and the static disk 8 is achieved through the sealing member. A plurality of protrusions or ear seats may be provided on the outer peripheral wall of the mounting plate 2, and the connecting holes 3 are provided on the protrusions or ear seats. The mounting plate 2 and the static disk 8 are fixedly connected through the fixing member 10 and the connecting holes 3.

[0045] In some embodiments, the mounting plate 2 is further provided with a plurality of positioning holes 5, and the positioning holes 5 match the positioning pins 9 on the static plate 8. In this technical solution, when the air intake assembly of the present invention is installed, the positioning holes 5 are used to position the positioning pins 9 on the static plate 8, so that the mounting plate 2 and the air intake port of the static plate 8 are opposite to each other, thereby preventing the air intake assembly from interfering with the static plate.

[0046] The air intake assembly of the present invention prevents the air intake pipe from physically entering the air intake port of the static disk and occupying the air intake port volume through the mounting plate 2, and the end face sealing structure of the mounting plate 2 ensures the verticality of the assembly, thereby avoiding the potential interference problem between the conventional direct-insertion air intake pipe and the air intake port of the static disk.

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

[0048] The common suction pipe is a cylindrical pipe inserted into the suction port of the static disk, which adopts radial sealing and occupies the volume of the suction port. It is like the diameter of the suction port is reduced, resulting in throttling.

[0049] For volumetric efficiency, assuming there is no insulation tube 7, the high-temperature gas directly heats the suction refrigerant, the gas volume expands, causing the density to decrease, the unit compression refrigerant volume to decrease, and the volumetric efficiency to decrease. For example, in a low-pressure chamber compressor, the refrigerant is heated by the motor, resulting in a loss of pump volumetric efficiency and becoming a defect of the low-pressure chamber structure.

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

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

[0052] In some embodiments, the inner wall of the air duct 12 is provided with a protrusion 16, and one end of the elastic member 13 is provided 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 being displaced under the action of high-pressure gas, thereby affecting the normal operation of the compressor. The protrusion 16 can be located near the end of the air duct 12 facing the stator 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 air intake assembly includes a cover plate 14, the cover plate 14 is covered on the static plate 8, and the air guide pipe 12 is sleeved on the cover plate 14. In this technical solution, through the cover plate 14, the oil-gas mixture at the compressor pump body row can all enter the air guide pipe 12 and the 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 passes through the cover plate 14, and one end of the air guide pipe 12 is located between the shell 11 and the cover plate 14. In this technical solution, one end of the air guide pipe 12 passes through the outside of the cover plate 14, and one end of the air guide pipe 12 is located between the shell 11 and the cover plate 14, ensuring that the gas after oil and gas separation is discharged through the compressor exhaust port in the compressor shell 11.

[0055] The air intake assembly of the second embodiment of the present invention. The air duct 12 is in the shape of a circular tube, with a stepped surface and an air inlet 15; the air inlet 15 of the air duct 12 faces the exhaust port of the pump body; the air duct 12 is welded and fixed on the mounting plate 2; the elastic member 13 is installed between the heat-insulating tube 7 and the air duct 12, and the bottom is fixed on the protrusion 16 of the air duct 12; the cover plate 14 is installed on the static plate 8. When the compressor is working normally, the gas is discharged from the pump body, passes through the air inlet 15 of the air duct 12, and is centrifuged by the elastic member 13 to achieve the effect of oil and gas separation, and then enters the interior of the compressor housing and is finally discharged from the exhaust pipe. When the compressor stops, high-pressure gas flows back. At this time, the elastic member 13 is subjected to the reverse force and squeezed together to block the air inlet 15 of the air duct 12. The high-pressure gas cannot enter the air inlet 15 of the air duct 12, which plays an anti-reversal role.

[0056] The air intake assembly of the present invention avoids direct contact between the air intake pipe assembly and the high-pressure gas, solves the overheating problem of the air intake refrigerant, and improves the compression efficiency of the compressor; the air intake pipe assembly is ensured by the end face seal and the positioning pin, so that the air intake pipe assembly and the air intake port of the static disk are aligned and assembled, solving the interference problem between the air intake pipe assembly and the static disk; it does not occupy the air intake port volume, avoids throttling resistance, effectively improves the fluid mass flow rate, and improves the overall capacity of the compressor. The refrigeration capacity of the compressor is improved, and the interference problem between the air intake pipe assembly and the static disk is solved by the sealing structure of the mounting plate 2 and the positioning pin 9, thereby reducing the vibration noise of the pump body.

[0057] The present invention also provides a compressor, comprising the above-mentioned air intake assembly.

[0058] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0059] 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 principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A suction assembly, characterized in that: include: An intake pipe (1), wherein the intake pipe (1) is arranged on a stator (8), an insulation pipe (7) is sleeved on the intake pipe (1), a gap is provided between the intake pipe (1) and the insulation pipe (7), one end of the insulation pipe (7) is arranged on the stator (8), and the other end of the insulation pipe (7) extends out of the compressor casing (11).

2. The getter assembly according to claim 1, characterized in that: The air intake assembly comprises a mounting plate (2), the air intake pipe (1) and the heat insulation pipe (7) are arranged on the mounting plate (2), the mounting plate (2) is arranged on the static plate (8), and a through hole (6) is arranged on the mounting plate (2), and the through hole (6) is connected to the air intake pipe (1).

3. The getter assembly according to claim 2, characterized in that: A sealing member (4) is provided at one end of the mounting plate (2) facing the static disk (8), a plurality of connection holes (3) are provided on the mounting plate (2), and the mounting plate (2) and the static disk (8) are connected via a fixing member (10) and the connection holes (3).

4. The getter assembly according to claim 3, characterized in that: The mounting plate (2) is also provided with a plurality of positioning holes (5), and the positioning holes (5) match the positioning pins (9) on the static plate (8).

5. The getter assembly according to claim 2, characterized in that: An air guide pipe (12) is also provided on the mounting plate (2). The air guide pipe (12) is sleeved outside the heat insulation pipe (7), and an air inlet (15) is provided on the air guide pipe (12).

6. The getter assembly according to claim 5, characterized in that: 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 via an elastic member (13), and the air inlet (15) is arranged close to the stator (8).

7. The getter assembly according to claim 6, characterized in that: The inner wall of the air guide tube (12) is provided with a protrusion (16), and one end of the elastic member (13) is arranged on the protrusion (16).

8. The getter assembly according to claim 6, characterized in that: The air intake assembly comprises a cover plate (14), the cover plate (14) is covered on the static plate (8), and the air guide pipe (12) is sleeved on the cover plate (14).

9. The getter assembly according to claim 8, characterized in that: One end of the air guide pipe (12) passes through the cover plate (14), and one end of the air guide pipe (12) is located between the shell (11) and the cover plate (14).

10. A compressor, characterized in that: A getter assembly comprising the getter assembly according to any one of claims 1 to 9.

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