CN210118288U - High-pressure fan - Google Patents

Abstract

The utility model discloses a high pressure positive blower, the utility model discloses a set up the radiating groove on the bearing housing of high pressure positive blower's front bearing to communicate this radiating groove and one section wind channel, make the gas in one section wind channel can get into the radiating groove, thereby realize the heat dissipation to the front bearing, effectively solved high pressure positive blower work in-process then, the difficult reduction of bearing temperature, thereby influence the problem of bearing life-span.

Description

High-pressure fan

Technical Field

The utility model relates to the technical field of machinery, especially, relate to a high pressure positive blower.

Background

The high-pressure fan is also called a high-pressure blower, and with the continuous development of economy and science and technology, foreign advanced technology and new technology are continuously introduced. High pressure fans have been widely used in the fields of industrial equipment, equipment manufacturing, civil equipment, and the like.

The high-pressure blower can rotate with less oil or without oil, the output air is clean, and the high-pressure blower has the characteristics of high pressure, large air quantity, low noise and light weight; the machine body is made of aluminum alloy, so that the weight of the equipment is greatly reduced; the special blade design has high pressure, large air quantity, low noise and long service life. Compared with similar products, the high-pressure fan has very small mechanical abrasion, other mechanical contact parts are not arranged except for the bearing, the bearing rotates at high speed in the operation process of the high-pressure fan, a large amount of heat can be generated, and the service life of the high-pressure fan is influenced by the overheated bearing. At present, the temperature rise of a high-pressure fan bearing is one of important factors influencing the service life of the high-pressure fan bearing, and how to reduce the temperature of the high-pressure fan bearing is very critical.

Disclosure of Invention

The utility model provides a high pressure positive blower to in solving prior art high pressure positive blower working process, the difficult reduction of bearing temperature, thereby influence the problem in bearing life-span.

The utility model provides a high pressure positive blower, include: the air conditioner comprises an air inlet, a first air duct, a second air duct, a third air duct, an exhaust pipe, a front bearing, an air outlet, a heat dissipation groove and a rotating shaft;

the air inlet is communicated with the section of air duct, and the air outlet is communicated with the three sections of air ducts;

the heat dissipation groove is arranged on the contact surface of the bearing sleeve of the front bearing and the outer ring of the front bearing and is arranged along the circumference of the bearing sleeve, and one end of the heat dissipation groove, which is far away from the outer ring, is communicated with the air duct at one end through an exhaust pipe;

and the air flow in the air channel at one end enters the heat dissipation groove through the exhaust pipe so as to dissipate the heat of the front bearing.

Preferably, the heat dissipation groove is a plurality of grooves.

Preferably, the device further comprises an air outlet pipe;

one end of the air outlet pipe is connected with the heat dissipation groove, and the other end of the air outlet pipe is communicated outside the high-pressure fan and used for discharging the air in the heat dissipation groove.

Preferably, one end of the heat dissipation groove, which is far away from the outer ring, is connected with the air outlet pipe.

Preferably, the height of the heat dissipation groove along the radial direction of the front bearing is 0.1-2 mm;

the length of the heat dissipation groove along the axial direction of the front bearing is 0.1-2 mm.

The utility model discloses beneficial effect as follows:

the utility model discloses a set up the radiating groove on the bearing housing of high pressure positive blower's front bearing to with this radiating groove and one section wind channel intercommunication, make the gas in one section wind channel can get into the radiating groove, thereby realize the heat dissipation to the front bearing, effectively solved high pressure positive blower working process then, the difficult reduction of bearing temperature, thereby influence the problem of bearing life-span.

Drawings

Fig. 1 is a schematic structural diagram of a high pressure fan according to a first embodiment of the present invention.

Description of reference numerals: 1. an air inlet; 2. a section of air duct; 3. a second air duct; 4. three air ducts; 5. the exhaust pipe 6 is a front bearing; 7. an air outlet; 8. a heat sink; 9. a rotating shaft.

Detailed Description

In order to solve the lower problem of current high pressure positive blower's front bearing life-span, the utility model provides a high pressure positive blower, the utility model discloses set up the radiating groove on the bearing housing of high pressure positive blower's front bearing to communicate this radiating groove and one section wind channel, make the gas in one section wind channel can get into the radiating groove, realize the heat dissipation to the front bearing, thereby improved the front bearing life-span. The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

The embodiment of the utility model provides a high pressure positive blower, see figure 1, this high pressure positive blower includes: the air-conditioning device comprises an air inlet 1, a first air duct 2, a second air duct 3, a third air duct 4, an exhaust pipe 5, a front bearing 6, an air outlet 7, a heat dissipation groove 8 and a rotating shaft 9;

the air inlet 1 is communicated with the section of air duct 2, and the air outlet 7 is communicated with the three sections of air ducts;

the heat dissipation groove 8 is arranged on the contact surface of the bearing sleeve of the front bearing 6 and the outer ring of the front bearing 6 and is arranged along the circumference of the bearing sleeve, and one end, far away from the outer ring, of the heat dissipation groove 8 is communicated with the air channel at one end through the exhaust pipe 5;

and the air flow in the air channel at one end enters the heat dissipation groove 8 through the exhaust pipe 5 so as to dissipate the heat of the front bearing 6.

The embodiment of the utility model provides a set up radiating groove 8 on high pressure positive blower's front bearing 6's bearing housing to with this radiating groove 8 and one section wind channel 2 intercommunication, make the gas in one section wind channel 2 can get into radiating groove 8, realize the heat dissipation to front bearing 6, thereby improved front bearing 6 life-span.

It should be noted that the utility model discloses the high pressure positive blower of structure more than applicable to the dual section, promptly the utility model discloses the segment number in wind channel can be two and more than two, the embodiment of the utility model provides a do not do specifically to this and restrict.

The utility model discloses high pressure positive blower's impeller direct mount is on electric motor rotor, and is totally not compression state, because the pump bearing is installed outside the compression chamber, so this bearing can't dispel the heat at the operation in-process, draws forth one section gas circuit with the low pressure section air in the compression chamber at present, opens radiating groove 8 on 6 bearing sleeves of preceding bearing, and the gas circuit that will draw forth communicates with each other with radiating groove 8, utilizes high pressure positive blower low pressure section, low temperature air to give the bearing heat dissipation, reaches the effect of interior system interior usefulness.

The beneficial effects of the utility model are that, high pressure positive blower's low pressure section, low temperature air can realize the air current discharge in the twinkling of an eye for the bearing heat dissipation, and air temperature is lower, and the air supply is sufficient, can incessant give the bearing heat dissipation of rotation, can make the bearing obtain effectual heat dissipation at high-speed operation in-process.

In specific implementation, a person skilled in the art may set the heat dissipation grooves 8 to be multiple, and make the heat dissipation grooves 8 evenly distributed on the bearing housing.

When the practical implementation, the utility model discloses still be equipped with the outlet duct, the one end of outlet duct with radiating groove 8 connects, specifically does, keeps away from radiating groove 8 the one end of outer lane with the outlet duct is connected, and the other end accesss to outside the high pressure draught fan, be used for with gas outgoing in the radiating groove 8.

In practical implementation, the height and length of the heat sink 8 on the bearing housing can be set by those skilled in the art according to the performance requirements of the bearing housing.

For example, the embodiment of the present invention has the height of the heat dissipation groove 8 along the radial direction of the front bearing 6 of 0.1-2 mm; the length of the heat dissipation groove 8 along the front bearing shaft 6 is 0.1-2 mm.

The working principle of the present invention will be explained in detail by a specific example below:

the working principle of the three-section high-pressure fan is as follows: the gas is inhaled by air inlet 1, and after gas got into a section wind channel 2, the rotatory impeller of fan can give gas a speed, and centrifugal force on the blade makes gas outwards accelerate and make pressure increase simultaneously, and along with rotatory going on, gaseous kinetic energy constantly increases for the gas pressure along the side wind channel further increases. As the duct narrows at the outlet, the gas is forced out of the three ducts and out through the exhaust 7. This design chooses the low pressure in one section wind channel 2 for use, and the radiating groove 8 is opened to low temperature gas on front bearing housing 6 in the front, and one section gas circuit that draws one section wind channel 2 leads to communicates with each other with radiating groove 8 on front bearing housing 6 through blast pipe 5, because the air temperature of one section wind channel 2 is lower, and the air supply is sufficient, can incessantly give the bearing heat dissipation of rotation, can effectual reduction bearing's temperature like this.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and that the scope of the present invention is not limited to the embodiments disclosed.

Claims (5)

1. A high pressure positive blower, comprising: the air conditioner comprises an air inlet, a first air duct, a second air duct, a third air duct, an exhaust pipe, a front bearing, an air outlet, a heat dissipation groove and a rotating shaft;

the air inlet is communicated with the section of air duct, and the air outlet is communicated with the three sections of air ducts;

the heat dissipation groove is arranged on the contact surface of the bearing sleeve of the front bearing and the outer ring of the front bearing and is arranged along the circumference of the bearing sleeve, and one end of the heat dissipation groove, which is far away from the outer ring, is communicated with the section of air duct through an exhaust pipe;

and the air flow in the section of air channel enters the heat dissipation groove through the exhaust pipe so as to dissipate heat of the front bearing.

2. The high pressure positive blower of claim 1,

the heat dissipation grooves are multiple.

3. The high pressure positive blower of claim 1, further comprising an outlet duct;

one end of the air outlet pipe is connected with the heat dissipation groove, and the other end of the air outlet pipe is communicated outside the high-pressure fan and used for discharging the air in the heat dissipation groove.

4. The high pressure positive blower of claim 3,

and one end of the radiating groove, which is far away from the outer ring, is connected with the air outlet pipe.

5. The high-pressure fan according to any one of claims 1-4,

the height of the heat dissipation groove along the radial direction of the front bearing is 0.1-2 mm;

the length of the heat dissipation groove along the axial direction of the front bearing is 0.1-2 mm.

Images