Air suction hush pipe and compressor

Abstract

The utility model relates to an air suction hush pipe which comprises an air inlet pipe and an air outlet pipe, the lower end of the air inlet pipe is provided with an air inlet, the upper end of the air inlet pipe is butted and communicated with the lower end of the air outlet pipe, the air outlet pipe is provided with an air outlet, and a bent and continuous flow channel is arranged in the air inlet pipe; the air inlet pipe and the air outlet pipe are connected in a clamped mode, two clamping blocks are symmetrically arranged on the outer side wall of the upper end of the air inlet pipe, a butt joint plate is arranged at the lower end of the air outlet pipe, two clamping sleeves are symmetrically arranged on the bottom face of the butt joint plate, and the clamping sleeves are matched with the clamping blocks. The utility model has the advantages of simpler manufacturing process and low cost. And the shell design difficulty is reduced, the shell space is reduced, and the size of the compressor can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating piston refrigeration compressors, in particular to an air suction silencer pipe and a compressor. Background Art

[0002] Intake noise is the main source of compressor airflow noise. The main noise reduction method at present is to install an intake silencer chamber at the suction port of the compressor to attenuate the noise of the compressor. The intake silencer chamber is generally divided into an upper and lower chamber welding structure or a front and rear split chamber snap-fit ​​structure. The structures of various intake silencer chambers are becoming more and more complex, with expansion buffering through multiple stages of silencer chambers and multiple pipelines, but this will cause increasing airflow power losses, resulting in reduced compressor energy efficiency. The size of the silencer chamber also determines that the shell space needs to be appropriately increased. The more complex the structure of the internal connector and partition of the silencer chamber, the greater the loss of intake efficiency, the larger the required shell space, and the more complex the manufacturing process and the higher the cost.

[0003] The upper and lower chamber welding structure requires welding the upper and lower chambers of the silencer chamber with welding wire. There is a risk that the welding wire will not melt and the welding will not be firm. In addition, impurities are easily generated during the welding process. It is necessary to add a wire mesh to prevent impurities. The process is complicated and the cost is increased. The split silencer chamber is divided into a front chamber and a rear chamber, which are fixed into components by snaps or welding. The snaps are generally interference fits. The amount of interference determines the difficulty of assembly of the component, and also determines the firmness of the assembly of the component. It requires high precision and has high requirements on the process level. In addition to the difficulty of the process, the above two types of suction chambers also have disadvantages such as high cost and large shell space. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide an air suction muffler pipe and a compressor.

[0005] The specific scheme of the utility model is: an air intake silencer pipe, comprising an air inlet pipe and an air outlet pipe, the lower end of the air inlet pipe is provided with an air inlet, the upper end of the air inlet pipe is butt-jointed with and connected to the lower end of the air outlet pipe, the air outlet pipe is provided with an air outlet, and a curved and continuous flow channel is provided in the air inlet pipe; the air inlet pipe and the air outlet pipe are clamped together, two clamping blocks are symmetrically provided on the outer side wall of the upper end of the air inlet pipe, and a docking plate is provided at the lower end of the air outlet pipe, and two clamping sleeves are symmetrically provided on the bottom surface of the docking plate, and the clamping sleeves match the clamping blocks.

[0006] Furthermore, the shapes of the card block and the card sleeve are both fan-shaped, and a card slot matching the card block is provided on the inner side of the card sleeve. The two card slots are in a centrally symmetrical relationship, and an opening is provided on one side of the card slot and a limit baffle is provided on the other side.

[0007] Furthermore, a countersunk hole is provided on the top surface of the air inlet pipe, and a portion of the bottom end of the air outlet pipe is inserted into the countersunk hole.

[0008] Furthermore, the shape of the air intake pipe is L-shaped, S-shaped or Y-shaped, and a reinforcing plate is provided on the outer wall of the air intake pipe, which effectively enhances the strength of the silencer pipe and changes the vibration frequency of the silencer pipe during air intake, effectively reducing the noise of 1000Hz.

[0009] Furthermore, the cross-section of the air intake pipe is circular or square.

[0010] Furthermore, a filter screen is provided at the air inlet of the air inlet pipe or at the joint between the air inlet pipe and the air outlet pipe.

[0011] The utility model also provides a compressor, including a shell, an intake pipe is installed on the shell, a movement is installed in the shell, the movement is provided with a valve group, the valve group is provided with a valve plate and a cylinder head, the above-mentioned intake silencer pipe is installed between the valve plate and the cylinder head, a mounting groove matching the outlet pipe is provided on the cylinder head, the outlet of the outlet pipe faces the intake hole of the valve plate, and the inlet of the intake pipe faces the intake pipe.

[0012] Compared with the prior art, the utility model has the following advantages: 1. The outer chamber of the suction muffler in the prior art, i.e., the upper chamber, the lower chamber or the front chamber and the rear chamber, is eliminated, and the manufacturing process is simpler and the cost is low. The difficulty of shell design is reduced, the shell space is reduced, and the size of the compressor is reduced; 2. The method of connecting the ferrule and the card block is adopted, and the welding method of the upper and lower chambers of the suction muffler is eliminated, which effectively avoids the adverse effects of metal and non-metal impurities remaining in the welding process on the operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the entire suction silencer pipe of the utility model;

[0014] Figure 2 yes Figure 1 The main view of

[0015] Figure 3 yes Figure 2 AA view;

[0016] Figure 4 yes Figure 2 BB view;

[0017] Figure 5 It is a three-dimensional schematic diagram of the air intake pipe of the utility model;

[0018] Figure 6 It is a three-dimensional schematic diagram of the air outlet pipe of the utility model;

[0019] In the figure: 1. air inlet pipe; 2. air outlet pipe; 3. air outlet; 4. limit block; 5. reinforcing plate; 6. clamping sleeve; 61. clamping slot; 7. clamping block. DETAILED DESCRIPTION

[0020] See also Figure 1-6 The present embodiment is an air intake silencer pipe, comprising an air inlet pipe 1 and an air outlet pipe 2, an air inlet port is arranged at the lower end of the air inlet pipe 1, the upper end of the air inlet pipe 1 is butt-jointed with and communicated with the lower end of the air outlet pipe 2, the air outlet pipe 2 is provided with an air outlet port 3, a curved and continuous flow channel is arranged in the air inlet pipe 1; the air inlet pipe 1 and the air outlet pipe 2 are clamped together, two clamping blocks 7 are symmetrically arranged on the outer side wall of the upper end of the air inlet pipe 1, a butt-jointing plate is arranged at the lower end of the air outlet pipe 2, two clamping sleeves 6 are symmetrically arranged on the bottom surface of the butt-jointing plate, and the clamping sleeves 6 match the clamping blocks 7.

[0021] The refrigerant gas sucked into the compressor through the suction pipe directly enters the silencer pipe and is silenced by the silencer pipe. Since the volume of the silencer pipe used is smaller than that of the existing silencer, the space occupied by the shell is reduced, and the corresponding shell can be further reduced in design to meet the market demand for miniaturization.

[0022] Furthermore, the block 7 and the sleeve 6 are both fan-shaped, and a slot 61 matching the block 7 is provided on the inner side of the sleeve 6. The two slots 61 are centrally symmetrical, and an opening is provided on one side of the slot 61 and a limit baffle is provided on the other side.

[0023] Furthermore, a countersunk hole is provided on the top surface of the air inlet pipe 1, and a portion of the bottom end of the air outlet pipe 2 is inserted into the countersunk hole.

[0024] Furthermore, the shape of the intake pipe 1 is L-shaped, S-shaped or Y-shaped, and a reinforcing plate 5 is provided on the outer wall of the intake pipe 1. The triangular base plate added to the silencer changes the vibration frequency during air intake and can reduce the noise of 1000 Hz.

[0025] Furthermore, the cross section of the air intake pipe 1 is circular, oval or square.

[0026] Furthermore, a filter screen is provided at the air inlet of the air inlet pipe 1 or at the joint between the air inlet pipe 1 and the air outlet pipe 2 .

[0027] The present embodiment also provides a compressor, comprising a shell, an intake pipe is mounted on the shell, a movement is mounted in the shell, the movement is provided with a valve group, the valve group is provided with a valve plate and a cylinder head, the above-mentioned intake silencer is installed between the valve plate and the cylinder head, a mounting groove matching the outlet pipe 2 is provided on the cylinder head, the shape of the outlet pipe 2 matches the mounting groove, a limit block 4 is provided on each side of the outlet pipe 2, the limit block 4 is embedded in the mounting groove, the outlet port 3 of the outlet pipe 2 faces the intake hole of the valve plate, and the intake port of the intake pipe 1 faces the intake pipe.

[0028] The upper and lower parts of the silencer pipe of the utility model are assembled by a rotating clamping method, which eliminates the welding method of the prior art, avoids impurity residues generated during the welding process, and can also avoid adverse effects on the compressor in the later stage.

Claims

1. A suction muffler, Its characteristics are: It includes an air inlet pipe and an air outlet pipe, the lower end of the air inlet pipe is provided with an air inlet, the upper end of the air inlet pipe is butt-jointed with and connected to the lower end of the air outlet pipe, the air outlet pipe is provided with an air outlet, and a curved and continuous flow channel is provided in the air inlet pipe; the air inlet pipe and the air outlet pipe are clamped together, two clamping blocks are symmetrically provided on the outer side wall of the upper end of the air inlet pipe, and a docking plate is provided at the lower end of the air outlet pipe, and two clamping sleeves are symmetrically provided on the bottom surface of the docking plate, and the clamping sleeves match the clamping blocks.

2. The suction muffler according to claim 1, Its characteristics are: The shapes of the card block and the card sleeve are both fan-shaped, and a card slot matching the card block is provided on the inner side of the card sleeve. The two card slots are in a centrally symmetrical relationship, and an opening is provided on one side of the card slot and a limit baffle is provided on the other side.

3. The suction muffler according to claim 1, Its characteristics are: A countersunk hole is arranged on the top surface of the air inlet pipe, and a part of the bottom end of the air outlet pipe is inserted into the countersunk hole.

4. The air suction muffler according to claim 1, Its characteristics are: The air intake pipe has an L-shape, an S-shape or a Y-shape, and a reinforcing plate is arranged on the outer wall of the air intake pipe.

5. The air suction muffler according to claim 1, Its characteristics are: The cross section of the air inlet pipe is circular or square.

6. The air suction muffler according to claim 1, Its characteristics are: A filter screen is provided at the air inlet of the air inlet pipe or at the joint between the air inlet pipe and the air outlet pipe.

7. A compressor, comprising a housing, an air intake pipe being mounted on the housing, a movement being mounted in the housing, the movement being provided with a valve group, the valve group being provided with a valve plate and a cylinder head, Its characteristics are: An intake silencer pipe as claimed in any one of claims 1 to 6 is installed between the valve plate and the cylinder head, and a mounting groove matching the outlet pipe is provided on the cylinder head, the outlet of the outlet pipe faces the intake hole of the valve plate, and the inlet of the intake pipe faces the intake pipe.

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