CN111237258A - Novel balance disc - Google Patents

Abstract

The present invention provides a novel balance plate. The new balance disc includes a balance disc and a cooling extension section for improving the heat dissipation effect of the balance disc and installed on the balance disc. A socket groove is formed on the disk body of the outer ring, and a ventilation groove is formed at the bottom of the socket groove, and the ventilation groove and the socket groove are in a stepped shape, and the cooling extension section includes an auxiliary disk. The socket cavity and the auxiliary disk rotating shaft pass through the cavity, and the diameter of the socket cavity is larger than that of the auxiliary disk rotating shaft. The diameters of the through cavities of the disk shaft are the same, and the balance disk also includes a comb tooth slot, and a plurality of comb tooth slots with the same specifications are provided on the outer ring wall of the disc body. The novel balance disc provided by the present invention has the advantages of balance, sealing and heat dissipation functions.

Description

A new type of balance disc

technical field

The invention relates to the technical field of balance discs for centrifugal blowers, in particular to a novel balance disc.

Background technique

In the manufacturing process of the centrifugal blower, there is a component called the balance disc, which is a device for balancing the axial force of the centrifugal blower, and also has the function of sealing the air outlet. Now we are going to add another function on the basis of the above functions of this part. This new function is of great significance to the safe operation of the centrifugal blower.

Centrifugal blower is a tool that performs work on air or other gases to make the medium gas have a certain energy. While doing work, it will inevitably convert the useless work into vibration, noise and temperature rise of the centrifugal blower. The temperature rise will lead to the reduction of the efficiency of the centrifugal blower, and it will also lead to the expansion of the various parts of the body, which may cause friction between the various parts due to expansion. We can avoid these unfavorable situations through reasonable design. However, there is one situation that is not easy to solve, that is, the bearing temperature rise caused by heat. Excessive temperature rise can lead to shortened bearing life or direct damage. This is a problem that must be paid attention to as a centrifugal blower manufacturer.

In the past, we usually considered three ways to cool the bearing: 1. Air cooling of the rear end fan; 2. Water cooling of the bearing housing jacket; 3. The combination of the above 1 and 2; but the effect is not ideal.

Therefore, it is necessary to provide a new type of balance disc to solve the above technical problems.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to provide a new type of balance plate with functions of balancing, sealing and heat dissipation.

In order to solve the above-mentioned technical problems, the novel balance plate provided by the present invention includes a balance plate and a cooling extension section installed on the balance plate for improving the heat dissipation effect of the balance plate.

Preferably, the balance disc includes a disc body, the disc body is provided with a disc body rotating shaft through cavity, and the disc body on the outer ring of the disc body rotating shaft through cavity is provided with a sleeve groove, and a ventilation groove is opened at the bottom of the sleeve groove, and the ventilation The groove and the socket groove are stepped.

Preferably, the balance disc further includes comb-tooth grooves, a plurality of comb-tooth grooves with the same strip size are provided on the outer ring wall of the disc body, and the comb-tooth grooves on the disc body are labyrinth seals, which are sealed by injecting nitrogen gas.

Preferably, the cooling and lengthening section includes an auxiliary disk, and the auxiliary disk is provided with a concentric socket cavity and an auxiliary disk rotating shaft through cavity, and the diameter of the socket cavity is larger than the diameter of the auxiliary disk rotating shaft through cavity, and the outer wall of the auxiliary disk is fixedly fitted with A number of annularly distributed and inclined cooling fins are installed on the auxiliary disc to increase the contact area with the air, so the heat on the shaft sleeve is transferred to the balance disc and then effectively dissipated by the cooling fins, thereby greatly reducing the heat dissipation. The bearing temperature rise is reduced and the bearing is effectively protected.

Preferably, both side end surfaces of the heat dissipation blades are in the shape of bullets, and all the heat dissipation blades are concentric with the auxiliary disk, so no additional power is required.

Preferably, the auxiliary disk is sleeved in the sleeved groove opened by the disk body through the opened sleeve cavity and fixed by hot casting.

Preferably, both the disk body and the auxiliary disk are made of aluminum alloy, so that the disk body and the auxiliary disk do not increase the burden on the rotor, and the heat dissipation effect of the aluminum alloy is good, which further improves the heat dissipation rate of the disk body and the auxiliary disk.

Preferably, the diameter of the through cavity of the rotating shaft of the disk body is the same as that of the through cavity of the rotating shaft of the auxiliary disk, which is convenient for being synchronously sleeved on the shaft sleeve.

Compared with the related art, the novel balance disc provided by the present invention has the following beneficial effects:

1. The present invention increases the contact area between the entire balance disc and the shaft due to the addition of an auxiliary disc to the disc body, and enhances the heat conduction efficiency, while the disc body and the auxiliary disc increase the thickness of the shaft sleeve, further increasing the heat dissipation effect;

2. The present invention increases the contact area with the air because the radiating fins are installed on the auxiliary disc, so that the heat on the shaft sleeve is transferred to the balance disc and then effectively dissipated by the radiating fins, thereby greatly reducing the bearing temperature rise and effectively. The bearings are well protected, and the safe operation of the centrifugal blower has a solid foundation;

3. The comb tooth groove on the disc body of the present invention is a labyrinth seal, which is sealed by injecting nitrogen into the rotating shaft, thus enhancing the sealing effect of the balance disc;

4. All the radiating blades of the present invention are coaxial with the auxiliary disk, so no additional power is required, and at the same time, a reasonable angle is adopted when designing and installing the radiating blades to reduce the wind noise of the centrifugal blower.

Description of drawings

1 is a schematic structural diagram of a preferred embodiment of a novel balance disc provided by the present invention;

Fig. 2 is the structural representation of the balance plate shown in Fig. 1;

Fig. 3 is the structural representation of the extension section shown in Fig. 1;

FIG. 4 is a schematic three-dimensional structure diagram of the extension section shown in FIG. 3 .

Labels in the figure: 1, balance plate, 11, plate body, 12, plate body shaft through cavity, 13, socket slot, 14, ventilation slot, 15, comb tooth slot, 2, cooling extension section, 21, auxiliary plate, 22. Heat dissipation blade, 23, socket cavity, 24, auxiliary disk rotating shaft through cavity.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , wherein, FIG. 1 is a schematic structural diagram of a preferred embodiment of the novel balancing disk provided by the present invention; FIG. 2 is a structural schematic diagram of the balancing disk shown in FIG. 1 . ; Figure 3 is a schematic structural diagram of the extension shown in Figure 1; Figure 4 is a schematic three-dimensional structure of the extension shown in Figure 3. The new balance plate includes: balance plate 1 and cooling extension section 2.

In the specific implementation process, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the cooling extension section 2 for improving the heat dissipation effect of the balance disk 1 is installed on the balance disk 1 , and the balance disk 1 includes a disk body 11 , and the disk body 11 The disk body rotating shaft through cavity 12 is opened, and the disk body 11 of the outer ring of the disk body rotating shaft through cavity 12 is provided with a socket groove 13, the bottom of the socket groove 13 is provided with a ventilation groove 14, and the ventilation groove 14 and the socket groove 13 is stepped, and the cooling and lengthening section 2 includes an auxiliary disk 21. The auxiliary disk 21 is provided with a coaxial socket cavity 23 and an auxiliary disk rotating shaft through cavity 24, and the diameter of the socket cavity 23 is larger than the diameter of the auxiliary disk rotating shaft through cavity 24. The outer wall of the auxiliary disk 21 is fixedly fitted with a number of annularly distributed and obliquely arranged cooling fins 22, and the diameter of the disk body shaft through cavity 12 and the auxiliary disk rotation shaft through cavity 24 is the same.

It should be noted that: the auxiliary disk 21 is sleeved into the sleeve groove 13 opened by the disk body 11 through the opening socket cavity 23 and fixed by hot casting, and the disk body rotating shaft through cavity 12 and the auxiliary disk rotating shaft through the cavity 24 have the same diameter, so the combined disc body 11 and the auxiliary disc 21 are sleeved on the shaft sleeve of the centrifugal blower through the through cavity of the rotating shaft. Since the disc body 11 is additionally provided with the auxiliary disc 21, the contact area between the entire balance disc and the shaft is improved. The heat conduction efficiency is enhanced, and the integrated disc body 11 and the auxiliary disc 21 increase the thickness of the shaft sleeve, which further increases the heat dissipation effect, and the auxiliary disc 21 is installed with heat dissipation blades 22 to increase the contact area with the air. After the heat is transferred to the balance disc, it is effectively dissipated by the cooling blades 22, thereby greatly reducing the temperature rise of the bearing and effectively protecting the bearing, so that the safe operation of the centrifugal blower has a solid foundation, and the operation is more safe.

Referring to FIG. 2 , the balance disc 1 also includes a comb-tooth slot 15 , a plurality of comb-tooth slots 15 with the same specifications are opened on the outer wall of the disc body 11 , and the comb-tooth slot 15 on the disc body 11 is a labyrinth seal , sealed by nitrogen injection.

Referring to FIG. 4 , both sides of the heat dissipation blades 22 are in the shape of bullets, and all the heat dissipation blades 22 are coaxial with the auxiliary disk 21 , so no additional power is required, and a reasonable angle is used when designing and installing the heat dissipation blades 22 . , reduce the wind noise of the centrifugal blower.

The disk body 11 and the auxiliary disk 21 are both made of aluminum alloy, so that the disk body 11 and the auxiliary disk 21 do not increase the burden on the rotor, and the heat dissipation effect of the aluminum alloy is good, which further improves the heat dissipation rate of the disk body 11 and the auxiliary disk 21 .

The working principle of the novel balance disc provided by the present invention is as follows:

The auxiliary disk 21 is sleeved in the socket groove 13 opened by the disk body 11 through the opening socket cavity 23 and fixed by hot casting, and the diameter of the disk body rotating shaft through cavity 12 and the auxiliary disk rotating shaft through cavity 24 is the same, Therefore, the combined disc body 11 and the auxiliary disc 21 are sleeved on the shaft sleeve of the centrifugal blower through the shaft through cavity. Since the disc body 11 is additionally provided with the auxiliary disc 21, the contact area between the entire balance disc and the shaft is improved, and the heat conduction efficiency is enhanced. The combined disc body 11 and the auxiliary disc 21 increase the thickness of the shaft sleeve, further increasing the heat dissipation effect. The auxiliary disc 21 is installed with heat dissipation blades 22 to increase the contact area with the air, so the heat on the shaft sleeve is transferred to the balance disc. After the fan is installed, it is effectively dissipated by the radiating blades 22, thereby greatly reducing the temperature rise of the bearing and effectively protecting the bearing, so that the safe operation of the centrifugal blower has a solid foundation, and the operation is more secure. The groove 15 is a labyrinth seal, which is sealed by injecting nitrogen gas. Since all the cooling blades 22 are concentric with the auxiliary disk 21, no additional power is required. To avoid the wind noise phenomenon, this equipment does not need maintenance and avoids the trouble of running water-cooled pipes, anti-freezing, and anti-leakage.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

The above are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, All are similarly included in the scope of patent protection of the present invention.

Claims (8)

1. a novel balance disk, is characterized in that, comprises: Balance plate (1); A cooling extension section (2), the cooling extension section (2) for improving the heat dissipation effect of the balance disk (1) is installed on the balance disk (1). 2. The novel balance disc according to claim 1, characterized in that, the balance disc (1) comprises a disc body (11), and the disc body (11) is provided with a disc body rotating shaft through cavity (12), And the disk body (11) of the outer ring of the through cavity (12) of the disk body is provided with a socket groove (13), and a ventilation groove (14) is opened at the bottom of the socket groove (13), and the ventilation groove (14) ) and the socket groove (13) are stepped. 3. The novel balance disc according to claim 2, characterized in that, the balance disc (1) further comprises a comb-tooth slot (15), and a plurality of the comb-tooth slot (15) with the same strip size are provided in the disc. on the outer ring wall of the body (11). 4. The new type of balance plate according to claim 1, characterized in that, the cooling extension section (2) comprises an auxiliary plate (21), and a concentric socket cavity (23) is opened on the auxiliary plate (21). ) and the auxiliary disk rotating shaft through cavity (24), and the diameter of the socket cavity (23) is larger than the diameter of the auxiliary disk rotating shaft through cavity (24). The provided cooling fins (22). 5. The new type of balance disc according to claim 4, characterized in that the end faces on both sides of the heat dissipation blades (22) are in the shape of bullets, and all the heat dissipation blades (22) are concentric with the auxiliary disk (21). . 6. The novel balance plate according to any one of claims 1, 2 or 4, wherein the auxiliary plate (21) is sleeved on the sleeve opened by the plate body (11) through the opened socket cavity (23) in the groove (13) and fixed by hot casting. 7 . The novel balance disc according to claim 2 , wherein the disc body ( 11 ) and the auxiliary disc ( 21 ) are both made of aluminum alloy. 8 . 8 . The novel balance disc according to claim 2 , wherein the diameter of the through-cavity (12) of the rotating shaft of the disc body is the same as that of the through-cavity (24) of the rotating shaft of the auxiliary disc.

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