Labyrinth type air inlet circulation pipeline of oil-free compressor

Abstract

The utility model discloses a labyrinth type air inlet circulation pipeline of an oil-free compressor, which is characterized by comprising a compressor cylinder cover, a labyrinth type air inlet cavity is arranged on the compressor cylinder cover, the labyrinth type air inlet cavity comprises an air flow pipeline which extends in a reciprocating direction changing mode for multiple times, and the air flow pipeline is connected with a connector which is used for being externally connected with an air pipe. The air inlet circulation speed is effectively reduced, and the working noise of the compressor is effectively reduced under the condition that the size of the compressor is not affected and the working flow of the compressor is guaranteed. The device is simple in structure and good in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and more particularly to an oil-free compressor. Background Art

[0002] The traditional compressor intake silencer structure uses silencer cotton media or an external silencer box for silencer. It is an independent structure connected to the cylinder, and its connection structure is complex and the manufacturing cost is high. For example, the Chinese patent authorization announcement number CN201262142Y discloses a compressor intake silencer device, which is characterized in that it is an integral structure with the compressor cylinder head, mainly composed of a labyrinth airway provided inside the compressor cylinder head and a cavity connected thereto, and the cavity is connected to the intake cavity valve plate of the compressor cylinder through a circular hole pipe. The utility model achieves the effect of physical silencer by making the gas change in volume by enlarging, shrinking, and then enlarging and shrinking again. The production cost is low and no additional installation is required. However, the disadvantage is that it is relatively complex, inconvenient to produce and process, and its structure needs further improvement. Summary of the Invention

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a labyrinth-type air intake circulation pipeline for an oil-free compressor that is stable, reliable, and effectively reduces the air intake circulation velocity.

[0004] The utility model adopts the following technical solutions to achieve the above-mentioned purpose: a labyrinth-type air intake circulation pipeline of an oil-free compressor, characterized in that it includes a compressor cylinder head, a labyrinth-type air intake cavity is provided on the compressor cylinder head, the labyrinth-type air intake cavity includes an airflow pipeline that changes direction and extends back and forth multiple times, the airflow pipeline is connected with a connecting joint for external air pipe, which effectively reduces the air intake circulation speed, and effectively reduces the working noise of the compressor while ensuring the working flow rate of the compressor without affecting the design of the size of the compressor.

[0005] As a further illustration of the above solution, the connecting joint is provided on the side of the compressor cylinder head, and the side of the compressor cylinder head is provided with a through hole connected between the connecting joint and the air flow pipeline.

[0006] Furthermore, a plurality of partitions arranged parallel to each other are provided in the labyrinth-type air inlet cavity, one end of the partition is fixedly connected to the inner wall of the labyrinth-type air inlet cavity, and an air vent is provided between the other end of the partition and the inner wall of the labyrinth-type air inlet cavity; a gap is provided between two adjacent partitions to form an air flow channel, and the air flow channels on both sides of the partition are connected through the air vent.

[0007] Furthermore, the compressor cylinder head includes a square cylinder head body, and outwardly protruding bumps are provided at the four corners of the square cylinder head body. The bumps are provided with screw holes for setting fasteners to be connected and fixed to the cylinder liner of the compressor.

[0008] Furthermore, an annular groove 1 is provided on the outer edge of the square cylinder cover body, annular groove 2 is provided in a group of diagonal portions of the annular groove 1, and sealing elements are provided in the annular groove 1 and the annular groove 2.

[0009] Furthermore, the annular groove 1 and the annular groove 2 are connected as one body, and the sealing member is an integrated rubber ring.

[0010] Furthermore, the square cylinder cover body is a metal cover body, and the air flow pipeline is an integrally formed structure with the metal cover body.

[0011] The beneficial effects that can be achieved by the above technical solutions of the present invention are:

[0012] The utility model adopts a labyrinth-type air intake chamber arranged on the compressor cylinder head. The labyrinth-type air intake chamber includes an airflow pipeline that changes direction and extends back and forth multiple times. The airflow pipeline is connected with a connecting joint for connecting to an external air pipe, which effectively reduces the air intake circulation speed. Under the design of the compressor without affecting the size, the working noise of the compressor is effectively reduced while ensuring the working flow rate of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a structural diagram of the present utility model.

[0015] Explanation of the reference numerals: 1, compressor cylinder head 2, labyrinth-type air intake chamber 2-1, air flow pipeline 2-2, connecting joint 2-3, protrusion 2-4, screw hole 2-5, annular groove 1 2-6, annular groove 2 3, partition 4, vent. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this utility model, "at least" means one or more, unless otherwise specifically defined.

[0018] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0019] In the utility model, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "below," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "above," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0020] The following description of the embodiments of the present invention is further described in conjunction with the accompanying drawings to make the technical solutions and beneficial effects of the present invention clearer and more specific. The following description of the embodiments with reference to the accompanying drawings is illustrative and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] like Figure 1-Figure 2 As shown, the utility model is a labyrinth-type air intake circulation pipeline for an oil-free compressor, comprising a compressor cylinder head 1, a labyrinth-type air intake chamber 2 provided on the compressor cylinder head, the labyrinth-type air intake chamber 2 including an airflow pipeline 2-1 that changes direction and extends back and forth multiple times, the airflow pipeline is connected with a connecting joint 2-2 for connecting to an external air pipe, effectively reducing the air intake circulation speed, and effectively reducing the operating noise of the compressor while ensuring the working flow of the compressor without affecting the design of the size of the compressor. The compressor cylinder head comprises a square cylinder head body, and outwardly protruding bumps 2-3 are provided at the four corners of the square cylinder head body, and the bumps are provided with screw holes 2-4 for setting fasteners and connecting and fixing them to the cylinder liner of the compressor. In this embodiment, the square cylinder head body is a metal cover body, and the airflow pipeline is an integrally formed structure with the metal cover body.

[0022] Furthermore, the outer edge of the square cylinder head body is provided with an annular groove 1 2-5, and an annular groove 2 2-6 is provided in a pair of diagonal portions of the annular groove 1. A sealing member is provided in the annular groove 1 and the annular groove 2. The annular groove 1 and the annular groove 2 are connected as one body, and the sealing member is an integrated rubber ring.

[0023] Furthermore, the connecting joint 2-2 is disposed on the side of the compressor cylinder head, and a through hole is provided on the side of the compressor cylinder head to connect the connecting joint to the airflow pipeline. A plurality of mutually parallel baffles 3 are disposed within the labyrinth-type air intake chamber. One end of each baffle is fixedly connected to the inner wall of the labyrinth-type air intake chamber, and a vent 4 is defined between the other end of each baffle 3 and the inner wall of the labyrinth-type air intake chamber. A space is provided between adjacent baffles to form an airflow channel, and the airflow channels on both sides of the baffles are connected through the vent.

[0024] Compared with the prior art, the present invention has an original air intake chamber structure in which external gas enters the air intake chamber through an elbow nozzle and then directly enters the working area of ​​the cylinder piston, resulting in a fast gas flow rate and loud noise. The labyrinth-type air intake chamber structure in the present technical solution adopts a labyrinth-type air path, which effectively reduces the air intake flow rate by extending the flow pipeline and changing direction multiple times under the constraint condition.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A labyrinth-type air intake pipeline for an oil-free compressor, characterized in that: The invention comprises a compressor cylinder head, wherein a labyrinth-type air intake cavity is provided on the compressor cylinder head, wherein the labyrinth-type air intake cavity comprises an air flow pipeline which extends back and forth multiple times in a changing direction, and the air flow pipeline is connected with a connecting joint for connecting to an external air pipe; The compressor cylinder head includes a square cylinder head body, and outward-protruding bumps are provided at the four corners of the square cylinder head body. The bumps are provided with screw holes for setting fasteners and connecting and fixing them to the cylinder liner of the compressor; the outer edge of the square cylinder head body is provided with an annular groove 1, and annular groove 2 is provided in a group of opposite corners of the annular groove 1, and sealing members are provided in the annular groove 1 and the annular groove 2; the annular groove 1 and the annular groove 2 are connected as one, and the sealing member is an integrated rubber ring.

2. The labyrinth-type air intake flow pipeline of an oil-free compressor according to claim 1, characterized in that: The connecting joint is arranged on the side of the compressor cylinder head, and the side of the compressor cylinder head is provided with a through hole connected between the connecting joint and the air flow pipeline.

3. The labyrinth-type air intake flow pipeline of an oil-free compressor according to claim 1, characterized in that: A plurality of partitions arranged parallel to each other are provided in the labyrinth-type air inlet cavity, one end of the partition is fixedly connected to the inner wall of the labyrinth-type air inlet cavity, and an air vent is provided between the other end of the partition and the inner wall of the labyrinth-type air inlet cavity; a gap is provided between two adjacent partitions to form an air flow channel, and the air flow channels on both sides of the partition are connected through the air vent.

4. The labyrinth-type air intake flow pipeline of an oil-free compressor according to claim 1, characterized in that: The square cylinder head body is a metal cover body, and the air flow pipeline is an integrally formed structure with the metal cover body.

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