CN-122014608-A - Single-phase household screw air compressor

Abstract

The invention relates to the technical field of air compressors and discloses a single-phase household screw air compressor, which comprises a box body, wherein a screw shell and a radiator fan are arranged in the box body, a male rotor in the screw shell is connected with a motor through a male rotor connecting shaft which extends out of the screw shell, a male rotor shell and a female rotor shell are arranged in the middle of the screw shell, the male rotor shell and the female rotor shell are cavities for arranging a male rotor, a female rotor and compressed air, the diameter of the male rotor shell is larger than that of the female rotor shell, a meshing area rib plate is arranged on the surface of the male rotor shell, the meshing area rib plate is arranged at a position corresponding to the meshing position of the male rotor and the female rotor, the curvature of the meshing area rib plate is the tooth crest curvature of the male rotor shell and the wall thickness of the male rotor shell, main rib plates are arranged on two sides of the screw shell, fishbone-like branch rib plates are arranged on the upper side and the lower side of the main rib plate, and the branch rib plates are arranged in a staggered manner with the meshing area rib plate.

Inventors

• CHEN LINGGUI
• MEI GUANGLEI
• ZHAN LEIJUN
• LI JIE
• LI AIMIN
• QIU WEI
• ZHANG QINGXIAO
• ZENG YANPING

Assignees

• 浙江象睿机电设备有限公司

Dates

Publication Date

20260512

Application Date

20260316

Claims (9)

1. 1. The utility model provides a single-phase domestic screw air compressor, includes box (1), be equipped with screw rod casing (2) and radiator fan (101) in box (1), the male rotor is connected its characterized in that with the motor through male rotor connecting axle (25) that self extended screw rod casing (2) in screw rod casing (2): The screw rod casing (2) mid portion is equipped with sun rotor casing (21) and female rotor casing (22), sun rotor casing (21) and female rotor casing (22) are for being used for setting up screw rod sun rotor and female rotor and compressed gas's cavity, and sun rotor casing (21) diameter is greater than female rotor casing (22), sun rotor casing (21) surface is equipped with meshing district floor (233), meshing district floor (233) set up the position and correspond sun rotor and female rotor meshing position, and the camber of meshing district floor (233) is sun rotor tooth top camber plus sun rotor casing (21) wall thickness, screw rod casing (2) both sides are equipped with main floor (23), both sides are equipped with imitative fishbone form branch rib about main floor (23), and branch rib and meshing district floor (233) are crisscross to be set up.
2. 2. The single-phase household screw air compressor of claim 1, wherein the branch rib arranged on one side of the male rotor housing (21) is a male rotor rib plate (231), the branch rib arranged on one side of the female rotor housing (22) is a female rotor rib plate (232), the male rotor rib plate (231) is higher than the female rotor rib plate (232), the male rotor rib plate (231) extends towards the female rotor housing (22), and the tail end of the male rotor rib plate (231) is arranged on the surface of the female rotor housing (22) and is staggered with the female rotor rib plate (232) to form a nested fin group.
3. 3. A single-phase household screw air compressor according to claim 2, wherein the male rotor rib (231) and the female rotor rib (232) are inclined at an angle of 15-25 DEG to the direction of air flow and are inclined to the direction of air flow.
4. 4. A single-phase household screw air compressor according to claim 3, wherein said male rotor rib (231) and female rotor rib (232) are trapezoidal in cross section.
5. 5. A single-phase household screw air compressor according to claim 3, wherein the male rotor rib (231) and the female rotor rib (232) are rounded at their top ends and at their rear inclined edges.
6. 6. A single-phase household screw air compressor according to claim 3, wherein the male rotor rib (231) and the female rotor rib (232) are surface-machined with parallel micro-grooves.
7. 7. A single-phase household screw air compressor according to any one of claims 4-6, wherein one end of the screw housing (2) provided with the male rotor connecting shaft (25) is provided with a connecting end face (24), the connecting end face (24) is arranged on one side of the screw housing (2) far away from the cooling fan (101), and one side of the connecting end face (24) facing the cooling fan (101) is provided with an inclined plane, and the inclined angle is consistent with that of the male rotor rib plate (231) and the female rotor rib plate (232).
8. 8. The single-phase household screw air compressor of claim 7, wherein the screw housing (2) and the cooling fan (101) are arranged at the same level, and a gas tank and a motor connected with the screw housing (2) are fixedly arranged with the box body (1) through a bracket.
9. 9. A single-phase household screw air compressor according to claim 1, wherein the screw housing (2) is integrally cast and the engagement zone ribs (233) are machined by milling.

Description

Single-phase household screw air compressor Technical Field The invention relates to the technical field of air compressors, in particular to a single-phase household screw air compressor. Background The domestic air compressor is a small-sized mechanical equipment for providing compressed air power for domestic environment and personal amateur work. The core function of the household air compressor is that normal pressure air is sucked into and forcefully compressed and stored in an internal air storage tank through a motor driving piston or screw rod and the like, so that electric energy is continuously converted into high-pressure air kinetic energy which can be used at any time, and a typical household air compressor mainly comprises a power part (motor), a compression host, an air storage tank, a pressure regulating device, a safety valve and an output interface. The device has low noise and compact volume during working, is usually designed in a portable or small fixed way, has power and exhaust quantity far smaller than those of industrial models, and is sufficient for meeting the intermittent medium-low pressure gas requirement. The automatic start-stop device has the most critical characteristics of automatic start-stop function, namely automatic stop when the pressure in the tank reaches the preset upper limit (such as 8 atmospheres), automatic restart when the pressure is reduced to the lower limit due to use, circulation, stable air source and one-position multifunctional miniature power station in a household scene. The pneumatic nail gun is driven to carry out woodworking decoration and furniture manufacturing, or is matched with a spray gun to carry out vehicle spraying and wall surface graffiti, or is used for cleaning gap dust and inflating balls, and even provides power for model pneumatic tools, aquarium oxygenation and the like, so that the pneumatic nail gun can be easily qualified. The electric tool overcomes the limitations of the electric tool in the aspects of continuous force, torque and explosion prevention, makes professional compressed air power safe, convenient and economic, and is a good help for home DIY, steam repair and maintenance and amateur love. The household screw air compressor is limited to a single-phase 220V power supply, and the motor power is usually limited to 3kW or slightly higher. At this power, the volumetric efficiency of the screw main machine does not dominate at low rotational speeds, and in order to obtain sufficient displacement at small dimensions, it is often necessary to increase the main machine rotational speed, but this in turn increases wear and heating. The actual displacement may be only equivalent to that of a high-end piston machine with the same power, but the cost is much higher, the household user needs to make the machine lightweight and small in occupied space, which means that the physical size of the screw main head (rotor and shell) must be made small, the theoretical displacement formula is that the rotor diameter is 2 times the rotor length is multiplied by the rotating speed, from the formula, under the condition that the rotor diameter and the rotor length are severely limited, the only adjustable variable is to greatly increase the rotating speed (n), the compression cycle time is shortened with the increase of the rotating speed, the time window of gas leakage is narrowed, the leakage amount of each cycle is possibly not changed greatly, the number of cycles completed in unit time is greatly increased, therefore, at high speed, the absolute value of the actual displacement is increased rapidly, although the volume efficiency of the screw main head (rotor and shell) is still not the highest (because each cycle still has leakage), but the gas generating capacity of the small piston machine is enough to be achieved or exceeded, the friction of all moving parts is even exponentially related with positive correlation, the rotating speed is doubled, the friction work and the wear rate are possibly increased, and the wear rate are increased, and at the same time, the rotating speed is increased, the rotor is maintained, the rotor gap is greatly, the heat is easily increased, the heat is easily generated, and the heat is easily accumulated, and the heat is easily is continuously polluted, and the heat is easily is accumulated, and the heat is easily is greatly damaged. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides a single-phase household screw air compressor which has the advantages of high efficiency heat conduction and concentrated heat dissipation, and solves the problem of difficult heat dissipation of a household air compressor. (II) technical scheme The invention provides a single-phase household screw air compressor for achieving the purposes of efficient heat conduction and concentrated heat dissipation, which comprises a box body, wherein a screw sh