Breathing machine fan and impeller assembly
By setting the hole position and external and internal protrusion of the deduplication method on the ventilator fan impeller assembly, combined with the large round table head structure, the problems of vibration and noise of the ventilator fan are solved, and smaller vibration and noise are achieved, which improves the User experience.
Patent Information
- Application Number
- CN202420937478.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing ventilator fans are very loud due to high vibration, which affects the user's sleep experience.
Design a ventilator fan impeller assembly, a shaft sleeve and impeller made of metal material, and a hole position for deduplication is set on the impeller and the shaft sleeve for balance, including setting external protrusions near the outer edge of the impeller and The inner protrusion is further balanced, and the sleeve of the large round table head structure is used to improve the smooth flow of air flow.
It effectively reduces vibration and noise of the ventilator fan, making rotating parts more stable and less noise, improving the user experience.
Smart Images
Figure CN222163008U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a ventilator, in particular to a ventilator fan, and more particularly to an impeller of the ventilator fan. Background Art
[0002] Users have increasingly higher requirements for the breathing experience when using ventilators, especially in terms of noise. They require ventilators to be low-noise, so the ventilator fan needs to have low noise. Low noise is often inextricably linked to vibration. As the vibration of the ventilator fan increases, the noise also increases. Reducing the vibration of the ventilator fan becomes a key factor in reducing noise.
[0003] The main bottleneck of the high noise of ventilators on the market is the vibration of the ventilator fan itself. The existing ventilator fan has large vibration, which causes the entire ventilator fan to have high noise. During the user's use, the user experience is poor due to the high noise of the ventilator fan, which affects the user's sleep. Utility Model Content
[0004] The technical problem to be solved by the utility model is to avoid the deficiencies of the above-mentioned prior art and provide a ventilator fan and impeller assembly, which has the advantages of simple and reasonable structure, small vibration and low noise.
[0005] The technical solution adopted by the utility model to solve the technical problem is:
[0006] A ventilator fan is provided, comprising an impeller assembly, the impeller assembly comprising a shaft sleeve and an impeller made of metal material, the shaft sleeve being arranged in a central through hole of the impeller; the impeller assembly is provided with at least one hole position for balancing by removing weight, that is, the impeller is provided with at least one hole position for balancing by removing weight and / or the shaft sleeve is provided with at least one hole position for balancing by removing weight.
[0007] The hole position is arranged on the impeller, that is, the impeller is provided with at least one hole position for balancing by deweighting.
[0008] The hole position is arranged on the sleeve, that is, the sleeve is provided with at least one hole position for balancing by deweighting; the sleeve adopts a flat head structure, including a large cylindrical part of the head and a small cylindrical part connected to the large cylindrical part. After the entire sleeve is arranged in the central through hole of the impeller, the end face of the large cylindrical part of the sleeve is flush with the outer end face of the impeller, and the end face of the small cylindrical part of the sleeve is flush with the inner end face of the impeller. The hole position is arranged on the large cylindrical part of the sleeve.
[0009] The hole position is arranged on the shaft sleeve, that is, at least one hole position for balancing by deweighting is arranged on the shaft sleeve; the shaft sleeve adopts a large conical head structure, including a large conical part of the head, a large cylindrical part in the middle and a small cylindrical part at the tail which are connected in sequence. After the entire shaft sleeve is arranged in the central through hole of the impeller, the large conical part of the shaft sleeve is higher than the outer end face of the impeller, and the hole position is arranged on the large conical part of the shaft sleeve.
[0010] The inner end surface of the impeller is also provided with a circle of outer protrusions near the outer edge, which is prepared to be balanced by deweighting.
[0011] The inner end surface of the impeller is also provided with a circle of inner protrusions close to the outer protrusions to be used for balancing by deweighting.
[0012] An impeller assembly is also provided, comprising a shaft sleeve and an impeller made of metal material, the shaft sleeve being arranged in a central through hole of the impeller, and the impeller assembly being provided with at least one hole position for balancing by removing weight, that is, the impeller being provided with at least one hole position for balancing by removing weight and / or the shaft sleeve being provided with at least one hole position for balancing by removing weight.
[0013] Compared with the prior art, the beneficial effects of the ventilator fan and impeller assembly of the utility model are:
[0014] 1. The utility model has at least one hole position on the impeller assembly for balancing by de-weighting, for example, at least one hole position on the sleeve of the impeller assembly for balancing by de-weighting and / or at least one hole position on the impeller for balancing by de-weighting, so that the rotating parts of the ventilator fan can be more stable in dynamic state, with less vibration, and thus less noise;
[0015] 2. Since a circle of outer protrusions is provided near the outer edge of the inner end face of the impeller to be balanced by weight removal, the outer circumference of the inner end face of the impeller is also balanced by weight removal, so that the impeller assembly can rotate more smoothly at high speed, with less vibration and thus less noise;
[0016] 3. Since a circle of inner protrusions is provided on the inner end surface of the impeller close to the outer protrusions and is prepared to be balanced by weight removal, the outer circumference of the inner end surface of the impeller is also balanced by weight removal, so that the impeller assembly can rotate more smoothly at high speed, with less vibration and thus less noise;
[0017] 4. Since the shaft sleeve adopts a large round table head structure, the advantage of this is that the airflow avoids encountering sharp edges when entering, thereby reducing noise and allowing the airflow to flow in smoothly.
[0018] In summary, the ventilator fan and impeller assembly of the utility model has the advantages of simple and reasonable structure, low vibration and low noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the axonometric projection of the ventilator fan of the utility model;
[0020] Figure 2 is an orthographic front cross-sectional schematic diagram of the ventilator fan without a volute;
[0021] Figure 3 is an axonometric projection schematic diagram of a rotor assembly of a motor of the ventilator fan;
[0022] Figure 4 is an axonometric projection schematic diagram of the first embodiment of the impeller assembly of the ventilator fan;
[0023] Figure 5 is an axonometric projection schematic diagram of the first embodiment of the impeller assembly in another direction;
[0024] Figure 6 is a schematic right view of an orthographic projection of the first embodiment of the impeller assembly;
[0025] Figure 7 is an orthographic front cross-sectional schematic diagram of the first embodiment of the impeller assembly;
[0026] Figure 8 is an axonometric projection schematic diagram of the second embodiment of the impeller assembly;
[0027] Fig. 9 is an axonometric projection schematic diagram of a first embodiment of the shaft sleeve of the impeller assembly;
[0028] Fig.10 It is a schematic diagram of the axonometric projection of the second embodiment of the shaft sleeve. DETAILED DESCRIPTION
[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0030] See also Figure 1 and Figure 2A ventilator fan includes an impeller assembly 20, which includes a sleeve 29 and an impeller 21 made of metal material, and the sleeve 29 is arranged in a central through hole (not marked) of the impeller 21; the impeller assembly 20 is provided with at least one hole position for balancing by de-weighting, that is, the impeller 21 is provided with at least one hole position 216 for balancing by de-weighting and / or the sleeve 29 is provided with at least one hole position 299 for balancing by de-weighting; generally, the hole position is arranged at the outer end of the impeller assembly 20, that is, the end of each fan blade (not marked) of the impeller 21.
[0031] See also Figures 1 to 3 The ventilator fan also includes a volute 10 with an air inlet (not marked), a motor 40 and a volute bottom cover 30. The motor 40 is installed in the volute bottom cover 30. The impeller 21 is installed at the output end of the rotating shaft 411 of the motor 40. The impeller 21 generally adopts an open impeller. The volute 10 is installed on the volute bottom cover 30. The structure of the ventilator fan is the existing technology, and their structure and position relationship are not repeated here. The motor 40 includes a rotor assembly 41, and the rotor assembly 41 includes a rotating shaft 411 and a magnetic component 412 arranged on the rotating shaft 411. The existing technology generally also uses a left counterweight 413 and a right counterweight 414 fixed at both ends of the magnetic component 412. The function of the left counterweight 413 and the right counterweight 414 is also to calibrate the balance. This structural method cannot fundamentally solve the problem of force balance of the ventilator fan during operation. The vibration is still large and the noise is also large.
[0032] See also Figure 4 and Figure 6 The hole is set on the impeller 21, that is, the impeller 21 is provided with at least one hole 216 for balancing by weight removal. The hole 216 can be directly designed on the impeller 21; it can also be set when the impeller assembly 20 is installed on the motor 40 during balancing. When balancing, generally according to the measured residual unbalance value, a hole is punched on the outer end of the impeller 21 to remove the corresponding unbalance; the above two methods can also be used at the same time. The number of holes 216 is determined according to the actual situation of balancing, which may be 1, 2, or more than 2. The size of the hole 216 is also determined according to the actual situation of balancing.
[0033] See also Figures 4 to 7 and Fig. 9, the hole position is arranged on the sleeve 29, that is, the sleeve 29 is provided with at least one hole position 299 for balancing by deweighting; the sleeve 29 adopts a flat head structure, including a large cylindrical part 291 of the head and a small cylindrical part 292 connected to the large cylindrical part 291. After the entire sleeve 29 is arranged in the central through hole of the impeller 21, the end face of the large cylindrical part 291 of the sleeve 29 is flush with the outer end face of the impeller 21, and the end face of the small cylindrical part 292 of the sleeve 29 is flush with the inner end face of the impeller 21. The hole position 299 is arranged on the large cylindrical part 291 of the sleeve 29.
[0034] See also Figure 8 and Fig.10 , the hole is arranged on the sleeve 29, that is, the sleeve 29 is provided with at least one hole 299 for balancing by deweighting; the sleeve 29 adopts a large truncated cone head structure, including a large truncated cone part 293 of the head, a large cylindrical part 291 of the middle part and a small cylindrical part 292 of the tail part, which are connected in sequence. After the entire sleeve 29 is arranged in the central through hole of the impeller 21, the large truncated cone part 293 of the sleeve 29 is higher than the outer end surface of the impeller 21, and the hole 299 is arranged on the large truncated cone part 293 of the sleeve 29. The sleeve 29 adopts a large truncated cone head structure, which can improve the airflow when the air enters the ventilator fan, so that the incoming airflow can flow softly to the airflow channel between the blades on the impeller 21, avoid encountering sharp edges when the airflow enters, reduce noise, and make the airflow flow smoothly.
[0035] See also Figure 5 and Figure 7 In order to make the rotating parts of the ventilator fan more stable in dynamic state, with less vibration and thus less noise, the inner end face of the impeller 21 is also provided with a circle of outer protrusions 219 near the outer edge, which is prepared to be calibrated and balanced by deweighting. Specifically, the impeller assembly 20 is installed on the motor 40. When balancing, generally based on the measured residual unbalance value, the outer protrusion 219 of the impeller 21 is cut with a knife to remove the corresponding unbalance; in this way, the large outer circumference of the inner end face of the impeller 21 is also calibrated and balanced by deweighting, and the front end small head of the outer end face of the impeller assembly 20 is balanced by deweighting, so that the impeller assembly 20 is more stable and vibrates less when rotating at high speed, so that the noise of the entire ventilator fan is also reduced.
[0036] See also Figure 5 and Figure 7In order to make the rotating parts of the ventilator fan more stable in dynamic state, with less vibration and thus less noise, the inner end surface of the impeller 21 is also provided with a circle of inner protrusions 218 near the outer protrusions 219, which are prepared to be calibrated and balanced by deweighting. Specifically, when the impeller assembly 20 is installed on the motor 40, the inner protrusions 218 of the impeller 21 are generally cut with a knife to remove the corresponding imbalance value based on the measured residual imbalance value; in this way, the inner side of the large outer circumference of the inner end surface of the impeller 21 is also calibrated and balanced by deweighting, and the front end of the outer end surface of the impeller assembly 20 is balanced by deweighting. The hole position is used to make the impeller assembly 20 more stable and less vibrating when rotating at high speed, so that the noise of the entire ventilator fan is also reduced.
[0037] Figures 4 to 10 An impeller assembly 20 includes a sleeve 29 and an impeller 21 made of metal material, wherein the sleeve 29 is arranged in a central through hole (not marked) of the impeller 21; the impeller assembly 20 is provided with at least one hole position for balancing by weight removal, that is, the impeller 21 is provided with at least one hole position for balancing by weight removal and / or the sleeve 29 is provided with at least one hole position 299 for balancing by weight removal; generally, the hole position is arranged at the outer end of the impeller assembly 20, that is, at the end of each fan blade (not marked) of the impeller 21. The impeller assembly 20 can be used in the ventilator fan of the utility model, and can also be used in other devices or equipment such as motors that require the structure of the impeller assembly 20.
[0038] See also Figures 4 to 10 The impeller 21 is generally made of engineering plastics, and the sleeve 29 is generally made of copper; the sleeve 29 is generally directly embedded in the central through hole of the impeller 21 by injection molding. In order to firmly fix the sleeve 29 in the central through hole of the impeller 21, a circle of grooves 296 is also provided on the sleeve 29. The hole 299 can be directly designed on the sleeve 29; it can also be set when the impeller assembly 20 is installed on the motor 40 during balancing. When balancing, generally according to the measured residual unbalance value, the outer end of the sleeve 29 is punched to remove the corresponding unbalance; the above two methods can also be used at the same time. The number of holes 299 is determined according to the actual situation of balancing, which may be 1, 2, or more than 2. The size of the hole 299 is also determined according to the actual situation of balancing.
[0039] The above-mentioned embodiments only express the preferred implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.
Claims
1. A ventilator fan, comprising an impeller assembly (20), the impeller assembly (20) comprising a sleeve (29) made of metal material and an impeller (21), the sleeve (29) being arranged in a central through hole of the impeller (21); characterized in that: The impeller assembly (20) is provided with at least one hole for balancing by removing weight.
2. The ventilator fan according to claim 1, characterized in that: The hole position is arranged on the impeller (21), that is, the impeller (21) is provided with at least one hole position for balancing by means of weight removal.
3. The ventilator fan according to claim 1, characterized in that: The hole is arranged on the shaft sleeve (29), that is, the shaft sleeve (29) is provided with at least one hole for balancing by deweighting; the shaft sleeve (29) adopts a flat head structure, including a large cylindrical part (291) at the head and a small cylindrical part (292) connected to the large cylindrical part (291); after the entire shaft sleeve (29) is arranged in the central through hole of the impeller (21), the end face of the large cylindrical part (291) of the shaft sleeve (29) is flush with the outer end face of the impeller (21), and the end face of the small cylindrical part (292) of the shaft sleeve (29) is flush with the inner end face of the impeller (21); the hole is arranged on the large cylindrical part (291) of the shaft sleeve (29).
4. The ventilator fan according to claim 1, characterized in that: The hole is arranged on the shaft sleeve (29), that is, the shaft sleeve (29) is provided with at least one hole for balancing by deweighting; the shaft sleeve (29) adopts a large truncated cone head structure, including a large truncated cone portion (293) at the head, a large cylindrical portion (291) in the middle, and a small cylindrical portion (292) at the tail, which are connected in sequence; after the entire shaft sleeve (29) is arranged in the central through hole of the impeller (21), the large truncated cone portion (293) of the shaft sleeve (29) is higher than the outer end surface of the impeller (21), and the hole is arranged on the large truncated cone portion (293) of the shaft sleeve (29).
5. The ventilator fan according to any one of claims 1 to 4, characterized in that: The inner end surface of the impeller (21) is also provided with a circle of outer protrusions (219) near the outer edge, which is prepared to be balanced by a weight removal method.
6. An impeller assembly (20), comprising a sleeve (29) made of metal material and an impeller (21), wherein the sleeve (29) is arranged in a central through hole of the impeller (21), characterized in that: The impeller assembly (20) is provided with at least one hole for balancing by removing weight.
7. The impeller assembly (20) according to claim 6, characterized in that: The hole position is arranged on the impeller (21), that is, the impeller (21) is provided with at least one hole position for balancing by means of weight removal.
8. The impeller assembly (20) according to claim 6, characterized in that: The hole is arranged on the shaft sleeve (29), that is, the shaft sleeve (29) is provided with at least one hole for balancing by deweighting; the shaft sleeve (29) adopts a flat head structure, including a large cylindrical part (291) at the head and a small cylindrical part (292) connected to the large cylindrical part (291); after the entire shaft sleeve (29) is arranged in the central through hole of the impeller (21), the end face of the large cylindrical part (291) of the shaft sleeve (29) is flush with the outer end face of the impeller (21), and the end face of the small cylindrical part (292) of the shaft sleeve (29) is flush with the inner end face of the impeller (21); the hole is arranged on the large cylindrical part (291) of the shaft sleeve (29).
9. The impeller assembly (20) according to claim 6, characterized in that: The hole is arranged on the shaft sleeve (29), that is, the shaft sleeve (29) is provided with at least one hole for balancing by deweighting; the shaft sleeve (29) adopts a large truncated cone head structure, including a large truncated cone portion (293) at the head, a large cylindrical portion (291) in the middle, and a small cylindrical portion (292) at the tail, which are connected in sequence; after the entire shaft sleeve (29) is arranged in the central through hole of the impeller (21), the large truncated cone portion (293) of the shaft sleeve (29) is higher than the outer end surface of the impeller (21), and the hole is arranged on the large truncated cone portion (293) of the shaft sleeve (29).
10. The impeller assembly (20) according to any one of claims 6 to 9, characterized in that: The inner end surface of the impeller (21) is also provided with a circle of outer protrusions (219) near the outer edge, which is prepared to be balanced by a weight removal method.