TWM655630U - Heat-insulated blower - Google Patents

Abstract

This invention proposes a blower with a heat insulation function, which has an outer shell, two bearing assemblies, a pressurized chamber, at least one heat-insulating disk, and a plurality of rotors. The outer shell has two opposite ends, an air inlet and an air outlet. The two bearing assemblies are respectively arranged at the two ends of the outer shell. The pressurized chamber is formed between the outer shell and the two bearing assemblies. The heat-insulating disk is arranged at one end of the outer shell and is located between the bearing assembly and the outer shell, and the heat-insulating disk isolates the bearing assembly and the pressurized chamber. The rotor is penetrated in the pressurized chamber, and each rotor has a rotating shaft and a plurality of blades. The rotating shaft is penetrated and arranged in the two bearing assemblies and the heat-insulating disk, and the blades are arranged on the rotating shaft and are located in the pressurized chamber. The invention can isolate the pressurized chamber and the bearing assembly by setting a heat insulating plate, thereby directly preventing heat from being transferred from the pressurized chamber to the bearing assembly.

Description

Heat-insulated blower

This invention relates to a blower, and in particular to a Roosevelt blower with heat insulation function.

A blower is a device used to deliver air, for example, it can be used in water aeration, air delivery for aquaculture, or draft in boilers. Taking a Roots blower as an example, generally speaking, the main structure of a Roots blower includes a chamber, a motor, and multiple rotors. The chamber has an air inlet and an air outlet, and each rotor has multiple blades and a shaft. The motor is connected to the shaft of the rotor and drives the blades to rotate in the chamber. By designing the blades and the space in the chamber into a zigzag shape, the blades of the multiple rotors can be engaged with each other when they rotate, and there is almost no gap between the blades and the inner wall of the chamber, so that the air can be effectively pushed from the air inlet to the air outlet.

During the pushing process, the squeezed air will increase the gas pressure in the chamber, but the total volume of the chamber does not increase. From the principle of thermodynamics, we know that the temperature in the chamber will rise at this time. The heat generated during this process may be conducted along the rotor, for example, through the blades and then to the shaft. In this way, the oil used for lubrication between the shaft and the motor will be lost and consumed faster due to the temperature rise, resulting in accelerated damage to the rotor, or the shaft or bearing structure will be damaged due to high temperature and high momentum, and must be replaced or repaired frequently. However, as mentioned above, blowers have various uses, some of which are installed in deep water or in mines. Due to the installation locations, the blowers in these places cannot be frequently repaired and maintained.

The traditional method of heat dissipation used by blowers is to cover the outside of the cylinder with water channels. However, this method can only extract as much heat as possible from the pressurized chamber from the outside, but it is difficult to directly isolate the heat transfer inside the blower, so there is no way to effectively solve the above problems. In addition, if the rotor is often damaged and repaired, the damaged parts will accumulate garbage, and the manufacturing process of new parts will also produce carbon emissions. Both of these are not conducive to environmental protection and the sustainable development of earth resources.

Therefore, the conventional blower has the above-mentioned disadvantages and needs to be improved.

The main purpose of this invention is to provide a blower that can reduce the impact of heat generated by air pressurization on the shaft.

To achieve the above-mentioned purpose, the present invention proposes a blower with heat insulation function, which has: A shell having two opposite ends, the shell having an air inlet and an air outlet formed therethrough, the air inlet and the air outlet being located between the two ends; Two bearing assemblies, which are respectively arranged at the two ends of the shell; A pressurized chamber, which is formed between the shell and the two bearing assemblies, the pressurized chamber is connected to the air inlet and the air outlet; At least one heat insulation plate, which is arranged at one of the ends of the shell, the at least one heat insulation plate is located between the corresponding bearing assembly and the shell, and the at least one heat insulation plate isolates the corresponding bearing assembly and the pressurized chamber; and A plurality of rotors are disposed in the pressurized chamber, each of the rotors having: a rotating shaft, which is disposed through the bearing assemblies and the at least one heat insulating disk; and a plurality of blades, which are disposed on the rotating shaft at intervals along the circumferential direction of the rotating shaft, and the blades are located in the pressurized chamber.

Therefore, the advantage of this invention is that by isolating the pressurized chamber and the bearing assembly with a heat-insulating plate, it can directly prevent heat from being transferred from the pressurized chamber to the bearing assembly, reduce the consumption of lubricating oil/engine oil in the bearing assembly, and reduce the probability of damage to the bearing assembly or the rotor shaft. Compared with the traditional blower that wraps the water channel on the outside of the cylinder to dissipate heat, the heat-insulating plate of this invention directly blocks and isolates the transfer of heat, so the heat insulation effect is better. Furthermore, this invention can reduce the damage of parts, which can not only reduce the output of waste, but also increase the service life, reduce the manufacture of new parts, and further reduce carbon emissions in the manufacturing process. Therefore, this creation can also respond to global warming and the rise of environmental awareness, reduce waste generation and reduce carbon emissions.

As described above, the blower with heat insulation function, wherein the at least one heat insulation disk is connected to the corresponding bearing assembly through one of the disk surfaces, and the disk surface is recessed away from the connected bearing assembly, thereby forming a heat insulation chamber between the at least one heat insulation disk and the connected bearing assembly.

The blower with heat insulation function as described above further has a working fluid which is arranged in the heat insulation chamber.

As described above, the blower with heat insulation function, wherein the at least one heat insulation plate further has at least one communication port, which is formed through the at least one heat insulation plate, and the heat insulation chamber and the outside of the at least one heat insulation plate are connected to each other through the at least one communication port.

As described above, the blower with heat insulation function, wherein each of the at least one heat insulation plate further has a heat insulation chamber formed inside the at least one heat insulation plate.

As described above, the blower with heat insulation function has two at least one connecting port, the two connecting ports are respectively located at two opposite ends of the at least one heat insulation plate, and the two connecting ports are interconnected through the heat insulation chamber.

As mentioned above, the blower with heat insulation function has two at least one heat insulation plate, and the two heat insulation plates are respectively arranged at the two ends of the outer shell.

As described above, the blower with heat insulation function, wherein each bearing assembly further has a cylinder cover connected to the outer casing, the cylinder cover has a plane, and the plane faces the heat insulation plate connected to the bearing assembly; and a plurality of bearings, which are arranged on the cylinder cover, and the rotors are respectively penetrated by the bearings.

As described above, the blower with heat insulation function, wherein at least one of the bearing assemblies further has an oil tank connected to the other side of the cylinder cover relative to the at least one heat insulation plate; and each of the rotors is inserted into the oil tank, and each of the rotors further has a gear set, which is assembled at one end of the rotating shaft of each of the rotors and is located in the oil tank.

First, please refer to FIG. 1 and FIG. 2 . The present invention provides a blower with a heat insulation function, which has an outer shell 10 , two bearing assemblies 20 , a pressurized chamber 30 , at least one heat insulation disk 40 , and a plurality of rotors 50 .

Please refer to Figures 2 to 6. The housing 10 has two opposite ends. An air inlet 11 and an air outlet 12 are formed through the housing 10. The air inlet 11 and the air outlet 12 are located between the two ends. The two bearing assemblies 20 are respectively disposed at the two ends of the housing 10, and a pressurized chamber 30 is formed between the housing 10 and the two bearing assemblies 20. The pressurized chamber 30 is connected to the air inlet 11 and the air outlet 12.

Each bearing assembly 20 includes a cylinder head 21 and a plurality of bearings 22. The cylinder head 21 is connected to the housing 10, and the plurality of bearings 22 are disposed on the cylinder head 21. At least one of the bearing assemblies 20 further has an oil tank 23, and the oil tank 23 is connected to a side of the cylinder head 21 away from the housing 10. In this embodiment, one of the bearing assemblies 20 has the oil tank 23, while the other bearing assembly 20 does not have the oil tank 23, but the present invention is not limited thereto.

At least one heat-insulating plate 40 is disposed at one end of the housing 10, and at least one heat-insulating plate 40 is located between the corresponding bearing assembly 20 and the housing 10. At least one heat-insulating plate 40 isolates the corresponding bearing assembly 20 and the pressurized chamber 30.

In this embodiment, the number of at least one heat insulating disk 40 is two, but not limited thereto. In other embodiments, there may be only one heat insulating disk 40, and the heat insulating disk 40 is disposed between the bearing assembly 20 having the oil tank 23 and the outer shell 10. The two heat insulating disks 40 are disposed at the two ends of the outer shell 10, respectively. Each heat insulating disk 40 is located between the corresponding bearing assembly 20 and the outer shell 10, and each heat insulating disk 40 isolates the corresponding bearing assembly 20 and the pressurized chamber 30. Specifically, in this embodiment, the outer shell 10 is formed around a hollow cylinder, and each heat insulating disk 40 has an inner disk surface 401 and an outer disk surface 402 that are opposite to each other. Each heat-insulating plate 40 is sealed and connected to two ends of the outer shell 10 with an inner plate surface 401, so that the outer shell 10 and the two heat-insulating plates 40 together surround a pressurized chamber 30.

The heat-insulating disc 40 is connected to the corresponding bearing assembly 20 through one of its disc surfaces, and the disc surface is recessed away from the connected bearing assembly 20, thereby forming a heat-insulating chamber 41 between the heat-insulating disc 40 and the connected bearing assembly 20. Specifically, each heat-insulating disc 40 is connected to the cylinder head 21 of the bearing assembly 20 through the outer disc surface 402, wherein the cylinder head 21 has a plane toward the heat-insulating disc 40, and the outer disc surface 402 is recessed away from the cylinder head 21 to form a groove, and the outer disc surface 402 of the heat-insulating disc 40 is sealed and engaged with the plane of the connected cylinder head 21, thereby forming a heat-insulating chamber 41 together at the position of the groove of the outer disc surface 402. In other embodiments, the heat insulating chamber 41 may be formed inside the heat insulating plate 40, rather than being surrounded by the heat insulating plate 40 and the cylinder head 21; or the heat insulating plate 40 itself may be made of a heat insulating material without the need for the heat insulating chamber 41. In addition, in this embodiment, the material of the heat insulating plate 40 may be cast iron, thereby obtaining a better heat conducting effect, but the present invention is not limited thereto.

A plurality of rotors 50 are disposed in the pressurized chamber 30, and each rotor 50 has a rotating shaft 51, a plurality of blades 52, and a gear set 53. In the present embodiment, there are two rotors 50, and the number of blades 52 is two, but the present invention is not limited thereto. The two ends of the rotating shaft 51 are respectively disposed in the heat insulating plate 40 and the bearing assembly 20. Specifically, the rotating shaft 51 of the rotor 50 is disposed in the bearing 22, and each rotor 50 is disposed in the oil tank 23. The gear set 53 of each rotor 50 is connected to one end of the rotating shaft 51 and is located in the oil tank 23. The blades 52 are disposed on the rotating shaft 51 at intervals along the circumferential direction of the rotating shaft 51, and the blades 52 are located in the pressurized chamber 30.

The present embodiment may also have a working fluid 60, which is disposed in the heat-insulating chamber 41. Specifically, each heat-insulating plate 40 may further have two connecting ports 42, which are located at opposite ends of the heat-insulating plate 40, and the two connecting ports 42 are interconnected through the heat-insulating chamber 41. The working fluid 60 enters the heat-insulating chamber 41 through one of the connecting ports 42, and then leaves through the other connecting port 42, thereby taking away the heat, but the present invention is not limited thereto; for example, in other embodiments, each heat-insulating plate 40 may also have only one connecting port 42, and the working fluid 60 may be injected into or extracted from the heat-insulating chamber 41 in the form of timed suction. In addition, in the present embodiment, water is used as the working fluid 60, but the present invention is not limited thereto.

After the invention is started, air enters the pressurized chamber 30 from the air inlet 11. When the rotor 50 is driven to rotate, the blades 52 push the air in the pressurized chamber 30 and send it out from the air outlet 12. The working fluid 60 enters from one of the communication ports 42 of the insulation plate 40 and fills the insulation chamber 41, thereby forming a liquid wall between the bearing assembly 20 and the pressurized chamber 30. When the air is compressed in the pressurized chamber 30 and the temperature rises, the aforementioned liquid wall can prevent heat from being transferred from the pressurized chamber 30 to the bearing assembly 20, especially preventing heat from being transferred to the oil tank 23. Moreover, after the liquid wall in the insulating chamber 41 absorbs the heat, it is discharged through another connecting port 42, and the new working fluid 60 flows into the insulating chamber 41, thereby taking heat away from the system, further ensuring that the heat will not be transferred to the bearing assembly 20. In addition, since in this embodiment, the working fluid 60 can directly contact the cylinder cover 21 of the bearing assembly 20, the working fluid 60 in the insulation chamber 41 can also absorb and take away a small amount of heat transferred to the bearing assembly 20 through the rotor 50, thereby enhancing the cooling effect.

In summary, the heat insulation plate 40 of the invention can reduce the heat in the pressurized chamber 30 from being transferred to the bearing assembly 20 to increase the temperature of the bearing assembly 20, and further reduce the consumption of lubricating oil and engine oil in the bearing assembly 20, thereby extending the interval between regular maintenance and reducing the probability of damage to the bearing assembly 20, thereby improving the stability of the operation of the invention. Compared with the traditional blower that wraps the water channel outside the cylinder to dissipate heat, the heat insulation plate 40 of the invention can directly block and isolate the transfer of heat, so the insulation efficiency is higher and the heat dissipation effect is better. This invention can reduce the probability of parts damage, which not only reduces the output of waste, but also increases the service life, reduces the manufacturing of new parts, and further reduces carbon emissions in the manufacturing process. In addition, this invention can further reduce the temperature of the entire device of this invention through the use of working fluid 60. When the working temperature of the entire device is reduced, the tolerance between parts due to thermal effects can also be reduced, making the operation smoother, while also reducing the generation of waste heat and energy consumption. Therefore, this invention can also respond to global warming and the rise of environmental awareness, reduce waste generation, reduce carbon emissions, and save energy.

10: Casing 11: Air inlet 12: Air outlet 20: Bearing assembly 21: Cylinder head 22: Bearing assembly 23: Fuel tank 30: Pressurized chamber 40: Insulation plate 401: Inner plate surface 402: Outer plate surface 41: Insulation chamber 42: Connection port 50: Rotor 51: Shaft 52: Blades 53: Gear assembly 60: Working fluid

Figure 1 is a schematic diagram of the appearance of this creation. Figure 2 is a schematic diagram of the decomposition of this creation. Figure 3 is a schematic diagram of the front view of this creation. Figure 4 is a schematic diagram of the left view of this creation. Figure 5 is a schematic diagram of the right view of this creation. Figure 6 is a schematic diagram of the top view of this creation.

10: Shell

11: Air inlet

12: Air outlet

20: Bearing assembly

40: Insulated tray

Claims (9)

A blower with heat insulation function, comprising: an outer shell having two opposite ends, the outer shell having an air inlet and an air outlet formed therethrough, the air inlet and the air outlet being located between the two ends; two bearing assemblies, which are respectively disposed at the two ends of the outer shell; a pressurized chamber, which is formed between the outer shell and the two bearing assemblies, the pressurized chamber being connected to the air inlet and the air outlet; at least one heat insulation plate, which is disposed at one of the ends of the outer shell, the at least one heat insulation plate being located between the corresponding bearing assembly and the outer shell, and the at least one heat insulation plate isolating the corresponding bearing assembly and the pressurized chamber; and A plurality of rotors are disposed in the pressurized chamber, each of the rotors having: a rotating shaft, which is disposed through the bearing assemblies and the at least one heat insulating disk; and a plurality of blades, which are disposed on the rotating shaft at intervals along the circumferential direction of the rotating shaft, and the blades are located in the pressurized chamber. A blower with a heat-insulating function as described in claim 1, wherein the at least one heat-insulating disk is connected to the corresponding bearing assembly via one of its disk surfaces, and the disk surface is recessed away from the connected bearing assembly, thereby forming a heat-insulating chamber between the at least one heat-insulating disk and the connected bearing assembly. The blower with heat insulation function as described in claim 2 further comprises: A working fluid disposed in the heat insulation chamber. The blower with heat insulation function as described in claim 3, wherein the at least one heat insulation plate further has: At least one communication port, which is formed through the at least one heat insulation plate, and the heat insulation chamber and the outside of the at least one heat insulation plate are connected to each other through the at least one communication port. A blower with heat insulation function as described in claim 4, wherein the number of the at least one connecting port is two, the two connecting ports are respectively located at two opposite ends of the at least one insulation plate, and the two connecting ports are interconnected through the insulation chamber. The blower with heat insulation function as described in claim 1, wherein each of the at least one heat insulation plate further has: An insulation chamber formed inside the at least one heat insulation plate. A blower with heat insulation function as described in any one of claims 1 to 6, wherein: The number of the at least one heat insulation plate is two, and the two heat insulation plates are respectively arranged at the two ends of the outer casing. A blower with heat insulation function as described in any one of claims 1 to 6, wherein each bearing assembly further comprises: a cylinder cover connected to the outer casing, the cylinder cover having a plane, the plane facing the heat insulation plate connected to the bearing assembly; and a plurality of bearings disposed on the cylinder cover, and the rotors are respectively penetrated through the bearings. A blower with heat insulation function as described in claim 8, wherein: At least one of the bearing assemblies further has: An oil tank connected to the other side of the cylinder head relative to the at least one heat insulation disk; and Each of the rotors is inserted into the oil tank, and each of the rotors further has: A gear set assembled at one end of the shaft of each of the rotors and located in the oil tank.

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