Air suction noise reduction cavity structure for improving oil discharge quantity of compressor

Abstract

The utility model relates to the technical field of compressors, in particular to an air suction noise reduction cavity structure used for improving the oil discharge quantity of a compressor, which comprises a cavity, a lower cavity and a communicating device communicated with the upper cavity and the lower cavity, a pressing plate is fixedly arranged at the top of the communicating device, and a through hole communicated with the communicating device is formed in the middle of the pressing plate. A baffle used for guiding flow is embedded in the middle of the communicating device, a filter screen is arranged at the bottom of the communicating device, the top and the bottom of the baffle are both matched with circular ring bases in a buckled mode, and the ends, facing the baffle, of the circular ring bases are each provided with two buckle sets aligned front and back. According to the device, the upper cavity and the lower cavity are communicated through the communicating device to be used for conveying airflow, the baffle is arranged in an inner cavity of the communicating device to be used for buffering and rectifying the airflow flowing at a high speed, turbulent flow and pulsation of the airflow are reduced, the airflow can pass through the silencer more stably, and the high-speed oil absorption effect is optimized; and the posture stability of the baffle in the communicating device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, concretely relates to a kind of suction muffling cavity structure for improving the oil discharge of compressor. BACKGROUND

[0002] The refrigerant gas circulating inside the existing refrigerator system is in a mixed state, containing lubricating oil and refrigerant gas. The mixed refrigerant gas is sucked from the suction muffling cavity suction port, and the filter screen is connected to the lower end of the communication device. With the operation of the compressor, the crankshaft stirs the lubricating oil at high speed, and oil mist is formed inside. The negative pressure generated by movement can suck oil mist or liquid oil into lubricated parts, such as pistons and connecting rod big heads, through the communication device. From the working principle, high speed can increase the flow speed of gas, increase the pressure in the crankcase, and quickly suck the liquid oil up with the piston, which may cause excessive oil suction in the cylinder head and oil strike phenomenon. After the excess oil enters the compression chamber, it will mix with the refrigerant gas and produce abnormal hydraulic impact during the compression process, damaging the valve plate and other internal components of the compressor. Secondly, excessive oil suction in the cylinder head can cause liquid oil to be discharged through the exhaust hole and pipeline. Excessive lubricating oil discharge can reduce the lubrication between internal components, increase friction, increase the operating resistance of the compressor, and affect the compression efficiency. Therefore, it is necessary to avoid the direct flow of gas from one end of the communication device to the other end, to ensure that the gas flow fully passes through each muffling chamber. The traditional communication device is only a straight-through cylindrical structure combined with the filter screen below, which cannot fully buffer and rectify the gas flow, cannot ensure that the gas flow fully passes through each chamber, and needs to be improved. Therefore, we propose a suction muffling cavity structure for improving the oil discharge of compressor. SUMMARY

[0003] To solve the above problems, the utility model provides a suction muffling cavity structure for improving the oil discharge of compressor.

[0004] To achieve the above technical purposes, the technical scheme of the utility model is as follows:

[0005] A suction muffling cavity structure for improving the oil discharge of compressor, comprising an upper chamber, a lower chamber, a communication device connecting the upper chamber and the lower chamber, a pressing plate fixedly arranged at the top of the communication device, a through hole communicated with the communication device formed in the middle of the pressing plate, a baffle for flow guide embedded in the middle of the communication device, and a filter screen arranged at the bottom of the communication device.

[0006] Further, the top and bottom of the baffle are buckled with a circular ring seat, and two front and rear aligned buckle groups are arranged at one end of the baffle towards the baffle. The buckle group comprises left and right symmetrically arranged clamping blocks, and the two opposite clamping blocks are integrally formed with inclined surfaces.

[0007] Further, the baffle top and bottom are respectively provided with a clamping groove set, and the clamping groove set comprises two horizontally aligned clamping grooves.

[0008] Further, a groove is arranged on the outer circumferential surface of the ring seat, and a rubber ring for abutting contact with the inner wall of the connector is embedded in the groove.

[0009] Further, the inner wall of the bottom of the connector is provided with an internal thread, and the filter screen is in the shape of a mesh bag, and the outer wall of the top of the filter screen is integrally formed with an external thread matched with the internal thread.

[0010] The beneficial effects of the utility model are as follows: the device is used for conveying airflow between the upper chamber and the lower chamber through the connector, and the baffle is arranged in the inner cavity of the connector to buffer and straighten the high-speed airflow, reduce the turbulence and pulsation of the airflow, and make the airflow pass through the silencer more stably, thereby optimizing the high-speed oil suction effect.

[0011] The baffle is clamped at both ends of the ring seat, and the ring seat is embedded in the inner wall of the connector, so that the stability of the baffle in the connector is improved, and the stability of the baffle for buffering and straightening the airflow is ensured.

[0012] The baffle and the ring seat are matched by a wedge buckle structure, so that the baffle and the ring seat can be assembled without other fastening tools, and the stability after installation is high. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description can be used to obtain other drawings without creative labor for those skilled in the art.

[0014] The utility model will be further described in detail according to the drawings.

[0015] Figure 1 It is the assembly perspective view of the baffle and the connector.

[0016] Figure 2 It is the sectional view of the baffle and the connector.

[0017] Figure 3 It is the structural schematic view of the air suction silencer cavity.

[0018] Figure 4 It is the explosion view of the ring seat and the baffle.

[0019] In the drawings:

[0020] 1, upper chamber; 2, lower chamber; 3, communication device; 4, pressing plate; 401, through hole; 5, filter screen; 6, baffle; 601, clamping groove; 7, circular ring seat; 701, rubber ring; 8, clamping block; 801, inclined surface buckle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0022] Embodiment one: as shown in the utility model discloses a kind of for improving compressor oil discharge capacity suction sound-absorbing cavity structure, including upper chamber 1, lower chamber 2, the communication device 3 of upper chamber and lower chamber, the communication device 3 top is fixedly provided with pressing plate 4, and the middle part of pressing plate 4 is provided with the through hole 401 being communicated with communication device 3, and the middle part of communication device 3 is inlaid with the baffle 6 for flow guide, and the bottom of communication device 3 is provided with filter screen 5. Figures 1-4 Upper chamber 1 bottom end is provided with the groove of accommodating pressing plate 4, and the through hole being communicated for accommodating communication device 3 is provided between upper chamber 1 and lower chamber 2, and after the installation of pressing plate 4, the pressing plate 4 is fixed by screw, to avoid the shaking displacement of communication device 3 in the working process;The end of filter screen 5 of communication device 3 is located in lower chamber 2, and upper chamber 1 and lower chamber 2 form suction sound-absorbing cavity, and the top of upper chamber 1 is connected with sound-absorbing valve, and the suction port of suction sound-absorbing cavity (right lower corner) inhales mixed state refrigerant gas, and the lower end of communication device is connected with filter screen, and mixed gas is discharged through lower chamber 2-filter screen 5-communication device 3-upper chamber 1-top sound-absorbing valve, and mixed gas is buffered and rectified through baffle 6, to reduce the turbulence and pulsation of airflow, so that the airflow passes through sound-absorbing valve more stably, and the high-speed oil absorption effect is optimized.

[0023] Figure 3 The number of circular ring seat 7 is two, which is used for buckling cooperation with the upper and lower ends of baffle 6, and the clamping block 8 at the bottom of circular ring seat 7 is vertically aligned with the clamping groove 601 of baffle 6, and direct downward pressing buckling cooperation can be achieved, so that the inclined surface buckle 801 is clamped in the clamping groove 601, and the two circular ring seats 7 are horizontally close to the inner wall of communication device 3, which can improve the posture stability of baffle 6 in communication device 3, and ensure the stability of baffle 6 for airflow buffering and rectification work.

[0024] The number of circular ring seat 7 is two, which is used for buckling cooperation with the upper and lower ends of baffle 6, and the clamping block 8 at the bottom of circular ring seat 7 is vertically aligned with the clamping groove 601 of baffle 6, and direct downward pressing buckling cooperation can be achieved, so that the inclined surface buckle 801 is clamped in the clamping groove 601, and the two circular ring seats 7 are horizontally close to the inner wall of communication device 3, which can improve the posture stability of baffle 6 in communication device 3, and ensure the stability of baffle 6 for airflow buffering and rectification work.

[0025] ​In the preferred technical solution, the top and bottom of the baffle 6 are snap-fitted with the circular ring seat 7, the circular ring seat 7 is provided with two front and back aligned buckle groups at one end thereof, the buckle group comprises left and right symmetrically arranged clamping blocks 8, the two oppositely arranged clamping blocks 8 are integrally formed with inclined buckles 801, the top and bottom of the baffle 6 are respectively provided with clamping groove groups, the clamping groove group comprises two horizontally arranged clamping grooves 601, the distance between the two oppositely arranged clamping blocks 8 is 1mm larger than the thickness of the baffle 6, the baffle 6 can move along the inclined surface of the inclined buckle 801 until the inclined buckle 801 is completely buckled with the clamping groove 601, the baffle 6 and the circular ring seat 7 can be assembled without using other fastening tools, and the stability after installation is higher.

[0026] In the preferred technical solution, the outer circumferential surface of the circular ring seat 7 is provided with a groove, and the groove is inlaid with a rubber ring 701 for abutting contact with the inner wall of the communication device 3, the rubber ring 701 increases the installation stability of the circular ring seat 7 and the inner wall of the communication device 3, and can also protect the inner wall of the communication device 3.

[0027] In the preferred technical solution, the inner wall of the bottom of the communication device 3 is provided with an internal thread, the filter screen 5 is in the shape of a mesh bag, the top outer wall of the filter screen 5 is integrally formed with an external thread matched with the internal thread, and the threaded matching mode facilitates the quick disassembly and assembly of the filter screen 5 and the communication device 3.

[0028] In summary, according to the shape, size and overall structure of the sound absorbing cavity, the communication device, the baffle and the filter screen are designed, the baffle structure is added to effectively guide the airflow and separate the gas-liquid mixed fluid, the baffle is vertically arranged on the inner wall of the communication device and flush with the center line of the pipeline, the size of the baffle is: length: 5-15mm, width: 4-8mm, thickness: 0.3-0.9mm, the two ends of the baffle 6 are respectively clamped in the circular ring seat 7, the diameter of the circular ring seat 7 is 0.5mm smaller than the inner wall of the communication device 3, the circular ring seat 7 is matched with the rubber ring 701, so that the circular ring seat 7 can be inlaid on the inner wall of the communication device 3, the attitude stability of the baffle 6 in the communication device 3 can be improved, the stability of the baffle 6 for airflow buffering and flow regulation can be ensured, and the baffle 6 can be prevented from falling off.

[0029] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A suction muffling chamber structure for improving the oil discharge amount of a compressor, characterized by, The utility model provides a filter device, including upper chamber (1), lower chamber (2), the intercommunicator (3) of intercommunication upper chamber and lower chamber, the intercommunicator (3) top fixedly arranged with pressing plate (4), the middle part of pressing plate (4) is opened with the through -hole (401) of intercommunication upper chamber and lower chamber intercommunication, the intercommunicator (3) middle part inlay setting has the baffle (6) for guiding flow, the intercommunicator (3) bottom is provided with filter screen (5).

2. A suction muffling chamber structure for improving the discharge oil amount of a compressor according to claim 1, characterized in that, The baffle (6) top and bottom are buckled with round ring seat (7), one end of round ring seat (7) towards baffle (6) is provided with two front and rear alignment setting buckle groups, the buckle group includes the clamping block (8) of left and right symmetry setting, two opposite setting clamping block (8) all are integrative molding with inclined surface buckle (801).

3. A suction muffling chamber structure for improving the discharge oil amount of a compressor according to claim 2, characterized in that, The baffle (6) top and bottom are buckled with round ring seat (7), one end of round ring seat (7) towards baffle (6) is provided with two front and rear alignment setting buckle groups, the buckle group includes the clamping block (8) of left and right symmetry setting, two opposite setting clamping block (8) all are integrative molding with inclined surface buckle (801).

4. A suction muffling chamber structure for improving the discharge oil amount of a compressor according to claim 2, characterized in that, The baffle (6) top and bottom are buckled with round ring seat (7), one end of round ring seat (7) towards baffle (6) is provided with two front and rear alignment setting buckle groups, the buckle group includes the clamping block (8) of left and right symmetry setting, two opposite setting clamping block (8) all are integrative molding with inclined surface buckle (801).

5. A suction muffling chamber structure for improving the discharge oil amount of a compressor according to claim 1, characterized in that, The baffle (6) top and bottom are buckled with round ring seat (7), one end of round ring seat (7) towards baffle (6) is provided with two front and rear alignment setting buckle groups, the buckle group includes the clamping block (8) of left and right symmetry setting, two opposite setting clamping block (8) all are integrative molding with inclined surface buckle (801).

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