CN-121976937-A - Portable horizontal opposed oilless four-cylinder compressor and oxygen generating equipment

CN121976937ACN 121976937 ACN121976937 ACN 121976937ACN-121976937-A

Abstract

The embodiment of the application provides a portable horizontally opposed oilless four-cylinder compressor and oxygen generating equipment, and relates to the technical field of medical equipment. The compressor comprises a motor and two groups of air cylinder assemblies, wherein the motor comprises two output shafts which are respectively arranged on two sides of the motor, and the two output shafts are respectively provided with the air cylinder assemblies. The cylinder assembly includes a first eccentric crankshaft, a second eccentric crankshaft, a first cylinder, and a second cylinder. The first eccentric crankshaft is connected to the output shaft, and one side of the first eccentric crankshaft, which is far away from the motor, is provided with a first connecting part. The second eccentric crankshaft is connected to the first connecting part, and one side of the second eccentric crankshaft, which is far away from the first eccentric crankshaft, is provided with the second connecting part. Wherein, the central axis of output shaft, the central axis of first connecting portion and the central axis of second connecting portion are all non-collinearly. The vacuum pressure swing adsorption device provided by the embodiment of the application can be applied to a portable oxygen generator.

Inventors

Gai Kuncheng
ZHAO XINRUI
LI SHUANG
WANG ENLIANG
ZHANG MENGYING
ZHOU CHENGGUANG
CHEN SHAOCHUN

Assignees

沈阳迈思医疗科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (12)

1. A portable horizontally opposed oilless four-cylinder compressor comprising: The motor (100) comprises two output shafts (110), the two output shafts (110) are respectively arranged at two sides of the motor (100), and the two output shafts (110) are coaxially arranged, and the two output shafts (110) are respectively provided with the cylinder assembly (200); The cylinder assembly (200) includes: a first eccentric crankshaft (210) connected to the output shaft (110), wherein a first connecting part (211) is arranged on one side of the first eccentric crankshaft (210) away from the motor (100); A second eccentric crankshaft (220) connected to the first connecting portion (211), wherein a second connecting portion (221) is provided on a side of the second eccentric crankshaft (220) away from the first eccentric crankshaft (210); A first cylinder (230) comprising a first cylinder body (232) and a first piston member (231), the first piston member (231) comprising a first piston head (235) and a first rotating portion (237), the first rotating portion (237) being located between the first eccentric crankshaft (210) and the second eccentric crankshaft (220), the first rotating portion (237) being in rotational connection with the first connecting portion (211); A second cylinder (240) comprising a second cylinder body (242) and a second piston member (241), the second piston member (241) comprising a second piston head (245) and a second rotating part (247), the second rotating part (247) being rotatably connected to the second connecting part (221); Wherein, the central axis of the output shaft (110), the central axis of the first connecting part (211) and the central axis of the second connecting part (221) are all not collinear.
2. The portable horizontally opposed oilless four-cylinder compressor of claim 1 in which the first connection (211) and the second connection (221) are disposed 180 ° out of phase with respect to the output shaft (110) and the central axes of the first connection (211) and the second connection (221) are parallel to the central axis of the output shaft (110).
3. The portable horizontally opposed oilless four-cylinder compressor of claim 2 in which one of two said cylinder assemblies (200) is defined as a first cylinder assembly and the other is a second cylinder assembly; The first connection (211) in the first cylinder assembly and the first connection (211) in the second cylinder assembly are arranged 180 ° out of phase with respect to the central axis of the output shaft (110) such that the first piston member (231) in the first cylinder assembly is in a reverse motion with respect to the first piston member (231) in the second cylinder assembly.
4. The portable horizontally opposed oilless four-cylinder compressor of claim 1 in which said first eccentric crankshaft (210) includes a first mounting hole (213), said first mounting hole (213) being connected to said output shaft (110), said second eccentric crankshaft (220) includes a second mounting hole (223), said second mounting hole (223) being connected to said first connection portion (211); The distance between the hole center of the first mounting hole (213) and the central axis of the first connecting portion (211) is a first eccentric distance, the distance between the hole center of the second mounting hole (223) and the central axis of the second connecting portion (221) is a second eccentric distance, and the first eccentric distance and the second eccentric distance are both 2.9-3.6 mm.
5. The portable horizontally opposed oilless four-cylinder compressor of claim 4 in which said first eccentric crankshaft (210) includes a first weight portion (212), said first weight portion (212) being located on a side of said first mounting hole (213) remote from said first connection portion (211); the second eccentric crankshaft (220) comprises a second counterweight part (222), and the second counterweight part (222) is positioned at one side of the second mounting hole (223) away from the second connecting part (221); The outer contours of the first weight part (212) and the second weight part (222) are arc-shaped, the radius of the rotation outer contour of the first weight part (212) is smaller than or equal to the radius of the rotation outer contour of the first rotation part (237), and the radius of the rotation outer contour of the second weight part (222) is equal to the radius of the rotation outer contour of the second rotation part (247).
6. The portable horizontally opposed oilless four-cylinder compressor of any one of claims 1 to 5 in which the first cylinder (230) further comprises a first valve plate (233) and the second cylinder (240) further comprises a second valve plate (243); At least one of the first valve plate (233) and the first piston head (235) is provided with a first avoiding part at one side opposite to the first valve plate; And/or at least one of the second valve plate (243) and the second piston head (245) is provided with a second avoiding part at one side opposite to the first avoiding part.
7. The portable horizontally opposed oilless four-cylinder compressor of claim 6 in which the first relief portion and/or the second relief portion is a relief ramp or a relief groove.
8. The portable horizontally opposed oilless four-cylinder compressor of any one of claims 1 to 5 further comprising: the air inlet pipe (300), the air inlet pipe (300) comprises a first air inlet pipe (310) and a second air inlet pipe (320), the first air inlet pipe (310) and the second air inlet pipe (320) are used for receiving air flow, air inlets of the two first cylinders (230) are communicated through the first air inlet pipe (310), and air inlets of the two second cylinders (240) are communicated through the second air inlet pipe (320); The exhaust pipe (400), exhaust pipe (400) are used for discharging the air current, exhaust pipe (400) include first blast pipe (410) and second blast pipe (420), and first blast pipe (410) and second blast pipe (420) are all used for discharging the air current, and the gas vent of two first cylinder (230) is through first blast pipe (410) intercommunication, and the gas vent of two second cylinder (240) is through second blast pipe (420) intercommunication.
9. The portable horizontally opposed oilless four-cylinder compressor of claim 8 further comprising a sound deadening housing (500), said sound deadening housing (500) being mounted to an outer surface of said motor (100), an intake passage (510) and an exhaust passage (520) being provided within said sound deadening housing (500); the air inlet end of the air inlet channel (510) is used for being communicated with the outside of the silencing shell (500), and the air outlet end of the air inlet channel (510) is communicated with the first air inlet pipe (310); The air outlet end of the air outlet channel (520) is used for being communicated with the outside of the silencing shell (500), and the air inlet end of the air outlet channel (520) is communicated with the air outlet of the second air outlet pipe (420).
10. The portable horizontally opposed oilless four-cylinder compressor as defined in claim 9 in which a plurality of partition plates (530) are provided in each of the intake passage (510) and the exhaust passage (520), the plurality of partition plates (530) dividing the intake passage (510) and the exhaust passage (520) into a plurality of chambers to form multi-stage noise reduction, and noise reduction through holes (531) are provided in the partition plates (530).
11. The portable horizontally opposed oilless four-cylinder compressor of claim 9 in which said sound-deadening housing (500) has a mounting cavity (540) thereon, said mounting cavity (540) having a shape that matches a shape of a circumferential outer wall of said motor (100), said mounting cavity (540) surrounding at least a portion of said motor (100).
12. An oxygen plant comprising a portable horizontally opposed oilless four-cylinder compressor as defined in any one of claims 1 to 11.

Description

Portable horizontal opposed oilless four-cylinder compressor and oxygen generating equipment Technical Field The application relates to the technical field of medical equipment, in particular to a portable horizontally-opposed oilless four-cylinder compressor and oxygen generating equipment. Background Oxygen is an indispensable substance for human life activities, and has important application value in the fields of medical first aid, plateau hypoxia environment, treatment of chronic respiratory diseases, rehabilitation and health care and the like. With advances in medical technology and growing demand for portable devices, oxygenerators have gradually expanded from traditional hospital centralized oxygen supply systems to home and portable settings. At present, the oxygen generating equipment is based on a molecular sieve physical adsorption method, and nitrogen and oxygen separation is realized by means of the selective adsorption characteristic of molecular sieves on nitrogen in air, so that high-purity oxygen is extracted. In the structure of the oxygen generating equipment, the compressor is used as a core component of the whole oxygen generating system and plays a role of providing a stable pressure source for the adsorption and desorption processes of the molecular sieve, and the performance parameters, the volume and the weight of the compressor directly determine the overall performance and the portability of the oxygen generator. In the related art, an oxygen generator generally adopts a PSA double-cylinder compressor to meet the requirement of small equipment volume. Medical oxygen generating equipment generally adopts a VPSA multi-cylinder compressor so as to meet the power requirement and the flow requirement in the oxygen generating process. However, the prior VPSA multi-cylinder compressor has larger volume, and is difficult to meet the requirements of small equipment volume and portability. Disclosure of Invention The embodiment of the application provides a portable horizontally-opposed oilless four-cylinder compressor and oxygen generating equipment, which reduce the volume of the compressor, thereby reducing the volume of the oxygen generating equipment so as to meet the requirements of small volume and portability of the oxygen generator. In a first aspect, embodiments of the present application provide a portable horizontally opposed oilless four-cylinder compressor comprising: the motor comprises two output shafts, the two output shafts are respectively arranged on two sides of the motor and coaxially arranged, the two output shafts are respectively provided with a cylinder assembly, and the cylinder assembly comprises: The first eccentric crankshaft is connected with the output shaft, and a first connecting part is arranged on one side of the first eccentric crankshaft, which is far away from the motor; The second eccentric crankshaft is connected with the first connecting part, and one side of the second eccentric crankshaft, which is far away from the first eccentric crankshaft, is provided with the second connecting part; The first cylinder comprises a first cylinder body and a first piston piece, the first piston piece comprises a first piston head and a first rotating part, and the first rotating part is positioned between the first eccentric crankshaft and the second eccentric crankshaft and is in rotary connection with the first connecting part; The second cylinder comprises a second cylinder body and a second piston piece, the second piston piece comprises a second rotating part and a second piston head, and the second rotating part is rotationally connected to the second connecting part; Wherein, the central axis of output shaft, the central axis of first connecting portion and the central axis of second connecting portion are all non-collinearly. In some embodiments, the first and second connection portions are disposed 180 ° out of phase with respect to the output shaft, and the central axes of the first and second connection portions are parallel to the central axis of the output shaft. In some embodiments, one of the two cylinder assemblies is defined as a first cylinder assembly and the other is defined as a second cylinder assembly; The first connecting portion in the first cylinder assembly and the first connecting portion in the second cylinder assembly are disposed 180 degrees out of phase with respect to the central axis of the output shaft so that the first piston member in the first cylinder assembly and the first piston member in the second cylinder assembly move in opposite directions. In some embodiments, the first eccentric crankshaft includes a first mounting hole, the first mounting hole being connected to the output shaft; the second eccentric crankshaft comprises a second mounting hole, and the second mounting hole is connected with the first connecting part; The distance between the hole center of the first mounting hole and the central axis of the firs