Bearing chamber structure with cooling function
By incorporating rotor auxiliary components and cooling oil passages within the bearing inner ring, along with annular spacers and elastic elements, the problem of insufficient bearing inner ring temperature was solved, achieving effective cooling and self-aligning functions and extending the bearing's service life.
Patent Information
- Application Number
- CN202520860835.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-01
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-05-01
AI Technical Summary
Existing bearing cooling methods are insufficient to effectively reduce the temperature of the bearing inner ring, leading to increased wear and shortened service life.
Rotor auxiliary components are installed on both sides of the inner ring of the bearing, and cooling oil is introduced into the inner ring of the bearing and into contact with the rotor auxiliary components through the oil inlet and return oil passages. The cooling oil carries away the heat. At the same time, annular spacers and elastic elements are installed between the outer ring of the bearing and the bearing housing to achieve self-aligning function and ensure cooling effect.
It effectively reduces the temperature of the bearing inner ring and extends the bearing service life. The design of elastic elements and annular spacers enables the bearing to self-align, ensuring that the bearing can still work normally when on different shafts.
Smart Images
Figure CN223908641U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing room structure of bearing installation, more specifically relates to a bearing room structure with cooling function. BACKGROUND
[0002] Bearing is the necessary component of rotary machinery, and a rotor usually needs 2 or more bearings to support. During the operation of the machine, these bearing supports will heat up due to friction, and in some application scenarios such as motors or compressors, other surrounding components may also heat up, and this heat will eventually be conducted to the bearings.
[0003] If the bearing temperature rises, the bearing will be deformed due to thermal expansion and contraction, and the wear of the bearing will be aggravated, and eventually the bearing will fail. In fact, one of the main factors causing bearing wear is the high temperature of the bearing.
[0004] There are several common bearing cooling methods:
[0005] The first, the most common bearing cooling method is oil mist lubrication. The lubricating oil is atomized into small droplets and mixed with high-pressure air at room temperature or low temperature. A nozzle is arranged near the bearing, and high-pressure air forms a high-speed airflow through the nozzle to carry the atomized lubricating oil into the bearing. The lubricating oil mist adheres to the rolling elements of the bearing to achieve lubrication, and the remaining air flow at room temperature or low temperature carries away the heat.
[0006] This method has some problems. First, when the bearing rotates at high speed, a strong vortex airflow will be formed around the rolling elements. If the oil mist injection airflow speed is not high enough, it will be blown away by the vortex around the rolling elements, and the oil mist cannot enter the rolling elements, and lubrication cannot be achieved.
[0007] If the oil mist injection speed is increased, there are two methods. One method is to adjust the nozzle aperture to be small, so that the oil mist droplets may adhere to the nozzle, causing the nozzle to be blocked. The other method is to increase the injection pressure under the premise of ensuring the nozzle aperture, which will cause a large increase in the amount of air and oil mist flowing in. If the exhaust and oil return speed is not fast enough, the oil mist will escape from the bearing chamber and enter the nearby equipment, causing other problems.
[0008] The second method is to embed a water channel inside the bearing seat, which is close to the bearing. The heat is carried away by the flow of cooling water or cooling oil in the water channel. Obviously, this method can only cool the outer ring of the bearing, and has little effect on the cooling of the inner ring of the bearing, while the inner ring of the bearing generates more heat than the outer ring during operation.
[0009] Therefore, it has become an important task to develop a bearing room structure that can cool the inner ring of the bearing. UTILITY MODEL CONTENTS
[0010] The utility model discloses a technical scheme which is adopted is: a bearing chamber structure with cooling function, it includes the main shaft, the bearing of installing on the main shaft, the bearing seat of setting around the bearing, with the first cover plate and the second cover plate of bearing seat fixed connection, its characterized in that: the first rotor auxiliary part and the second rotor auxiliary part are still set up on the main shaft in bearing both sides, the first rotor auxiliary part and the second rotor auxiliary part are respectively with the both sides of bearing inner ring abut, the bearing seat is provided with oil inlet oil circuit and oil return oil circuit, the first cover plate is provided with the first oil supply branch for the first rotor auxiliary part cooling oil, and the first oil supply branch upper end is communicated with the oil inlet oil circuit on the bearing seat, and the first oil supply branch lower end is communicated with the oil return oil circuit on the bearing seat, the second cover plate is provided with the second oil supply branch for the second rotor auxiliary part cooling oil, and the second oil supply branch upper end is communicated with the oil inlet oil circuit on the bearing seat, and the second oil supply branch lower end is communicated with the oil return oil circuit on the bearing seat.
[0011] Cooling oil enters the first oil supply branch on the first cover plate from the oil inlet oil circuit on the bearing seat, and flows to the first rotor auxiliary part, and the first rotor auxiliary part and the inner ring of the bearing contact, so that the heat of the inner ring of the bearing is taken away by the cooling oil, and then flows out from the oil return oil circuit on the bearing seat. Similarly, another cooling oil enters the second oil supply branch on the second cover plate from the oil inlet oil circuit on the bearing seat, and flows to the second rotor auxiliary part, and the second rotor auxiliary part and the inner ring of the bearing contact, so that the heat of the inner ring of the bearing is taken away by the cooling oil, and then the cooling oil flows out from the oil return oil circuit on the bearing seat, so that the inner ring of the bearing can be cooled and cooled down, and the service life of the bearing is prolonged.
[0012] The utility model discloses a further technical feature of the technical scheme is:
[0013] The outer ring of the bearing and the bearing seat are further provided with an annular spacer, the outer surface of the annular spacer is provided with a groove, and the groove is provided with an elastic element, the elastic element is in contact with the annular spacer and the bearing seat at the same time, the elastic element can prevent the annular spacer and the bearing seat from contacting, and the elastic element and the bearing seat do not slip, and the elastic element and the annular spacer do not slip; The annular spacer is further provided with an oil inlet hole and an oil return hole at the position corresponding to the first oil supply branch.
[0014] Because the annular spacer and the bearing seat are further provided with the annular spacer, the annular spacer is provided with the groove on the outer surface, the elastic element is arranged in the groove, the elastic element is in contact with the spacer and the bearing seat, the elastic element can prevent the contact between the annular spacer and the bearing seat, the elastic element is not slipped between the elastic element and the bearing seat, the elastic element and the annular spacer are not slipped, and the gap is formed between the annular spacer and the bearing seat, so that when the two bearing seats are not coaxial, the annular spacer and the bearing seat are moved together until the two bearing seats are coaxial, and the aligning function is realized.
[0015] The annular spacer is further provided with the oil inlet through hole and the oil return through hole at the positions corresponding to the first oil supply branch, so that the aligning function is realized and the bearing inner ring cooling and temperature reduction function is also realized.
[0016] The elastic element is a rubber ring or a spiral spring ring welded at the head and tail.
[0017] Another technical scheme adopted by the utility model is:
[0018] A bearing chamber structure with a cooling function, which comprises a main shaft, a bearing installed on the main shaft, a bearing seat arranged around the bearing, a first cover plate and a second cover plate fixedly connected with the bearing seat, characterized in that: first rotor auxiliary parts and second rotor auxiliary parts are further arranged on the main shaft at both sides of the bearing, the first rotor auxiliary parts and the second rotor auxiliary parts are respectively in abutment with both side surfaces of the bearing inner ring, the bearing seat is provided with an oil inlet oil way and an oil return oil way, an oil passing slot is arranged between the first cover plate and the bearing, the oil passing slot supplies cooling oil for the first rotor auxiliary parts, the oil passing slot is in communication with the oil inlet oil way on the bearing seat in the upper part, and the oil passing slot is in communication with the oil return oil way on the bearing seat in the lower part; the second cover plate is provided with a second oil supply branch in communication with the oil inlet oil way and capable of supplying cooling oil for the second rotor auxiliary parts, the upper end of the second oil supply branch is in communication with the oil inlet oil way on the bearing seat, and the lower end of the second oil supply branch is in communication with the oil return oil way on the bearing seat.
[0019] Cooling oil enters the oil passing slot between the first cover plate and the bearing from the oil inlet oil way on the bearing seat, flows to the first rotor auxiliary parts, the first rotor auxiliary parts are in contact with the inner ring of the bearing, so that the heat of the bearing inner ring is taken away by the cooling oil, and finally the cooling oil flows out from the oil return oil way on the bearing seat. Similarly, another way of cooling oil enters the second oil supply branch on the second cover plate from the oil inlet oil way on the bearing seat, flows to the second rotor auxiliary parts, the second rotor auxiliary parts are in contact with the inner ring of the bearing, so that the heat of the bearing inner ring is taken away by the cooling oil, and finally the cooling oil flows out from the oil return oil way on the bearing seat, so that the bearing inner ring can be well cooled and temperature reduced, and the service life of the bearing is prolonged.
[0020] The further technical features of the technical scheme are:
[0021] The outer ring of the bearing and the bearing seat are further provided with an annular spacer, a groove is arranged on the outer surface of the annular spacer, and an elastic element is arranged in the groove, the elastic element is in contact with the annular spacer and the bearing seat at the same time, the elastic element can prevent the annular spacer and the bearing seat from being in contact, the elastic element does not slip between the bearing seat and the annular spacer, and the elastic element does not slip between the bearing seat and the annular spacer.
[0022] The outer ring of the bearing and the bearing seat are further provided with an annular spacer, a groove is arranged on the outer surface of the annular spacer, and an elastic element is arranged in the groove, the elastic element is in contact with the annular spacer and the bearing seat at the same time, the elastic element can prevent the annular spacer and the bearing seat from being in contact, the elastic element does not slip between the bearing seat and the annular spacer, and the elastic element does not slip between the bearing seat and the annular spacer.
[0023] The annular spacer is further provided with an oil inlet hole and an oil return hole at a position corresponding to the oil gap, so that the bearing inner ring cooling function is realized while the aligning function is realized.
[0024] The elastic element is a rubber ring or a spiral spring ring welded at the head and tail. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is a structural section view of the first embodiment of the utility model;
[0026] Figure 2 is a structural section view of the second embodiment of the utility model;
[0027] Figure 3 is a structural section view of the third embodiment of the utility model;
[0028] Figure 4 is a structural section view of the fourth embodiment of the utility model DETAILED DESCRIPTION
[0029] The utility model will be described further in detail in combination with the drawings.
[0030] The first embodiment is as follows: Figure 1The utility model provides a bearing chamber structure with cooling function, which comprises a main shaft 1, a bearing 2 installed on the main shaft 1, a bearing seat 3 arranged around the bearing, a first cover plate 4 and a second cover plate 5 fixedly connected with the bearing seat 3, characterized in that: first rotor auxiliary parts 6 and second rotor auxiliary parts 7 are further arranged on the main shaft on both sides of the bearing 2, the first rotor auxiliary parts 6 and the second rotor auxiliary parts 7 respectively abut against both side surfaces of the bearing inner ring, the bearing seat 3 is provided with an oil inlet oil way 31 and an oil return oil way 32, the first cover plate 4 is provided with a first oil supply branch 41 for supplying cooling oil to the first rotor auxiliary parts 6, the upper end of the first oil supply branch 41 is communicated with the oil inlet oil way 31 on the bearing seat 3, and the lower end of the first oil supply branch 41 is communicated with the oil return oil way 32 on the bearing seat 3; the second cover plate 5 is provided with a second oil supply branch 51 for supplying cooling oil to the second rotor auxiliary parts 7, the upper end of the second oil supply branch 51 is communicated with the oil inlet oil way 31 on the bearing seat 3, and the lower end of the second oil supply branch 51 is communicated with the oil return oil way 32 on the bearing seat 3.
[0031] Cooling oil enters the first oil supply branch 41 on the first cover plate 4 from the oil inlet oil way on the bearing seat 3, flows to the first rotor auxiliary parts 6, the first rotor auxiliary parts 6 and the inner ring of the bearing 2 are in contact, so that the heat of the inner ring of the bearing 2 is taken away by the cooling oil, and the cooling oil finally flows out from the oil return oil way 32 on the bearing seat 3. Similarly, another way of cooling oil enters the second oil supply branch 51 on the second cover plate 5 from the oil inlet oil way 31 on the bearing seat 3, flows to the second rotor auxiliary parts 7, the second rotor auxiliary parts 7 and the inner ring of the bearing 2 are in contact, so that the heat of the inner ring of the bearing 2 is taken away by the cooling oil, and the cooling oil finally flows out from the oil return oil way 32 on the bearing seat 3, so that the inner ring of the bearing can be cooled and cooled well, and the service life of the bearing is prolonged.
[0032] The second embodiment is as follows Figure 2 In this embodiment, an annular spacer 8 is further arranged between the outer ring of the bearing 2 and the bearing seat 3, a recess 81 is arranged on the outer surface of the annular spacer 8, and an elastic element (not shown in the figure) is arranged in the recess 81, the elastic element is in contact with the annular spacer 8 and the bearing seat 3 at the same time, the elastic element can prevent the annular spacer 8 and the bearing seat 3 from being in contact, the elastic element does not slip between the bearing seat 3 and the annular spacer 8, and the elastic element does not slip between the bearing seat 3 and the annular spacer 8; meanwhile, the annular spacer 8 is further provided with an oil inlet through hole 82 and an oil return through hole 83 at positions corresponding to the first oil supply branch 41.
[0033] Because the annular spacer 8 is further arranged between the bearing 2 outer ring and the bearing seat 3, a groove 81 is arranged on the outer surface of the annular spacer 8, and an elastic element is arranged in the groove 81, which is in contact with the spacer 8 and the bearing seat 3 at the same time, and can prevent the annular spacer 8 and the bearing seat 3 from being in contact, and the elastic element does not slip between the bearing seat 3 and the annular spacer 8, and the elastic element does not slip between the annular spacer 8, so that a gap is formed between the annular spacer 8 and the bearing seat 3, and when the two bearing seats 3 of the same main shaft 1 are not coaxial, because there is a gap between the annular spacer 8 and the bearing seat 3, the annular spacer 8 will move together with the bearing 2 until the two bearings 2 are coaxial, thereby realizing the aligning function.
[0034] In the embodiment, the annular spacer 8 is further provided with an oil inlet hole 82 and an oil return hole 83 at the position corresponding to the first oil supply branch 41, so as to ensure the realization of the aligning function and the realization of the cooling and temperature reduction function of the bearing inner ring.
[0035] In actual application, the elastic element is a rubber ring or a spiral spring ring welded at the head and tail.
[0036] The third embodiment is shown as follows: Figure 3 A bearing chamber structure with cooling function, which comprises a main shaft 1, a bearing 2 arranged on the main shaft, a bearing seat 3 arranged around the bearing, a first cover plate 4 and a second cover plate 5 fixedly connected with the bearing seat 3, characterized in that: the first rotor auxiliary part 6 and the second rotor auxiliary part 7 are further arranged on the main shaft 1 on both sides of the bearing 2, the first rotor auxiliary part 6 and the second rotor auxiliary part 7 are respectively in abutment with the two side surfaces of the bearing inner ring, the bearing seat 3 is provided with an oil inlet channel 31 and an oil return channel 32, the first cover plate 4 and the bearing 2 are provided with an oil supply gap 9, the oil supply gap 9 supplies cooling oil to the first rotor auxiliary part 6, the oil supply gap 9 is in communication with the oil inlet channel 31 on the bearing seat 3, and the lower part of the oil supply gap 9 is in communication with the oil return channel 32 on the bearing seat 3; the second cover plate 5 is provided with a second oil supply branch 51 in communication with the oil inlet channel 31 and capable of supplying cooling oil to the second rotor auxiliary part 7, the upper end of the second oil supply branch 51 is in communication with the oil inlet channel 31 on the bearing seat 3, and the lower end of the second oil supply branch 51 is in communication with the oil return channel 32 on the bearing seat 3. In the embodiment, a compression spring 10 is further arranged in the oil supply gap 9, which provides pre-tightening force to the bearing 2, and ensures the pre-tightening force on the bearing 2 when the main shaft 1 and the bearing seat 3 produce slight axial movement.
[0037] Cooling oil enters from the oil inlet 31 on the bearing housing 3 into the oil passage 9 between the first cover plate 4 and the bearing 2, flowing to the first rotor auxiliary component 6. The first rotor auxiliary component 6 contacts the inner ring of the bearing 2, thus carrying away the heat from the inner ring. Finally, the cooling oil flows out from the return oil passage on the bearing housing 3. Similarly, another stream of cooling oil enters from the oil inlet 31 on the bearing housing 3 into the second oil supply branch 51 on the second cover plate 5, flowing to the second rotor auxiliary component 7. The second rotor auxiliary component 7 contacts the inner ring of the bearing 2, thus carrying away the heat from the inner ring. Finally, the cooling oil flows out from the return oil passage on the bearing housing. This effectively cools the inner ring of the bearing, extending its service life.
[0038] Fourth implementation example Figure 4 As shown, this embodiment is based on embodiment three, and an annular spacer 8 is further provided between the outer ring of the bearing 2 and the bearing seat 3. A groove 81 is provided on the outer surface of the annular spacer 8, and an elastic element (not shown in the figure) is provided in the groove 81. The elastic element contacts both the annular spacer 8 and the bearing seat 3. The elastic element can prevent the annular spacer 8 and the bearing seat 3 from contacting each other. At the same time, the elastic element does not slip with the bearing seat 3, and the elastic element does not slip with the annular spacer 8. In this way, a gap is formed between the annular spacer 8 and the bearing seat 3. When two bearing seats 3 installed on the same spindle 1 are not coaxial, because there is a gap between the annular spacer 8 and the bearing seat 3, the annular spacer 8 will move together with the bearing 2 until the two bearings 2 are coaxial, thereby realizing the self-aligning function.
[0039] In this embodiment, the annular spacer 8 is also provided with an oil inlet hole 82 and an oil return hole 83 at the positions corresponding to the oil passage 9, so as to ensure the realization of the self-aligning function and the cooling function of the bearing inner ring.
[0040] In practical applications, the elastic element is a rubber ring or a helical spring ring welded at both ends.
[0041] In practical applications, bearing housing structures are generally used in pairs on a single spindle. Therefore, Embodiments 1 and 3 are usually used in pairs, and Embodiments 2 and 4 are usually used in pairs. Thus, the figures below show... Figure 1 and Figure 3 Facing opposite directions Figure 2 and Figure 4 Facing in the opposite direction.
[0042] The technical content and technical features of the utility model have been disclosed above, however, it can be understood that under the spirit and creative idea of the utility model, the technicians in the field can make various changes and improvements to the above structure, including the combination of the technical features disclosed or claimed herein alone, and other combinations obviously including these features. These modifications and / or combinations all fall within the technical field involved by the utility model, and fall within the protection scope of the utility model claim.
Claims
1. A bearing housing structure with cooling function, comprising a main shaft, a bearing mounted on the main shaft, a bearing housing surrounding the bearing, and a first cover plate and a second cover plate fixedly connected to the bearing housing, characterized in that: The first rotor auxiliary part and the second rotor auxiliary part are respectively in abutment with the two side surfaces of the inner ring of the bearing, the bearing seat is provided with an oil inlet channel and an oil return channel, the first cover plate is provided with a first oil supply branch for supplying cooling oil to the first rotor auxiliary part, the upper end of the first oil supply branch is in communication with the oil inlet channel of the bearing seat, and the lower end of the first oil supply branch is in communication with the oil return channel of the bearing seat; the second cover plate is provided with a second oil supply branch for supplying cooling oil to the second rotor auxiliary part, the upper end of the second oil supply branch is in communication with the oil inlet channel of the bearing seat, and the lower end of the second oil supply branch is in communication with the oil return channel of the bearing seat.
2. The bearing chamber structure with cooling function according to claim 1, characterized in that: The outer ring of the bearing and the bearing seat are further provided with an annular spacer, the outer surface of the annular spacer is provided with a groove, and the groove is provided with an elastic element, the elastic element is in contact with the annular spacer and the bearing seat at the same time, the elastic element can prevent the annular spacer and the bearing seat from being in contact, the elastic element does not slip between the bearing seat and the annular spacer, and the elastic element does not slip between the annular spacer and the bearing seat; the annular spacer is further provided with an oil inlet through hole and an oil return through hole at positions corresponding to the first oil supply branch.
3. The bearing chamber structure with cooling function according to claim 2, characterized in that: The elastic element is a rubber ring or a spiral spring ring welded at the head and tail.
4. A bearing chamber structure with a cooling function, comprising a main shaft, a bearing mounted on the main shaft, a bearing housing arranged around the bearing, a first cover plate and a second cover plate fixedly connected with the bearing housing, characterized in that: The first rotor auxiliary part and the second rotor auxiliary part are respectively in abutment with the two side surfaces of the inner ring of the bearing, the bearing seat is provided with an oil inlet channel and an oil return channel, the first cover plate and the bearing are provided with an oil supply gap, the oil supply gap supplies cooling oil to the first rotor auxiliary part, the upper part of the oil supply gap is in communication with the oil inlet channel of the bearing seat, and the lower part of the oil supply gap is in communication with the oil return channel of the bearing seat; the second cover plate is provided with a second oil supply branch in communication with the oil inlet channel and capable of supplying cooling oil to the second rotor auxiliary part, the upper end of the second oil supply branch is in communication with the oil inlet channel of the bearing seat, and the lower end of the second oil supply branch is in communication with the oil return channel of the bearing seat.
5. The bearing chamber structure with cooling function according to claim 4, characterized in that: The outer ring of the bearing and the bearing seat are further provided with an annular spacer, the outer surface of the annular spacer is provided with a groove, and the groove is provided with an elastic element, the elastic element is in contact with the annular spacer and the bearing seat at the same time, the elastic element can prevent the annular spacer and the bearing seat from being in contact, the elastic element does not slip between the bearing seat and the annular spacer, and the elastic element does not slip between the annular spacer and the bearing seat; the annular spacer is further provided with an oil inlet through hole and an oil return through hole at positions corresponding to the oil supply gap.
6. The bearing chamber structure with cooling function according to claim 5, wherein: The elastic element is a rubber ring or a spiral spring ring welded at the head and tail.