Motor structure and full-premixing fan with same

Abstract

The utility model discloses a motor structure and have its full premixing fan, relate to fan technical field, include: fan, the fan includes volute and the wind wheel in volute, the fan upside is provided with connecting column, motor, motor outside wall is provided with installation portion, the sidewall on installation portion is provided with the mounting groove, the mounting groove has the installation hole that goes through up and down, connecting sleeve, be provided with the connecting through -hole on connecting sleeve, the fastening screw is inserted to have on connecting through -hole, the connecting sleeve between connecting column of motor on the motor and the fan is connected through fastening screw, and installation portion is located on motor outside wall, make the connection of motor and fan more compact, and the connecting sleeve can be replaced flexibly, ensure that the screw is enough stable after the tightening of connecting sleeve.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a motor structure and a fully premixed fan having the same. Background Technology

[0002] Currently common gas water heaters still produce pollutants during operation, requiring timely venting, typically necessitating a motor-driven fan for extraction. However, fully premixed gas water heaters, using a premixed fan, completely mix the gas and air before combustion. This eliminates the need for secondary air during combustion. Therefore, the motor and fan work in conjunction.

[0003] Common premixed water heaters require drilled screw holes in their motors before screws connect to the fan. However, motors are relatively lightweight and prone to vibration, which can loosen the screws in the original screw holes. If the screws are not tight enough, the motor will become unstable, directly affecting the fan's operation and impacting the water heater's lifespan. Replacing the entire motor with an unsuitable original screw hole is too costly, and adding shims is not always effective. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a motor structure and a fully premixed fan having the same.

[0005] According to a first aspect embodiment of the present invention, a motor structure includes: a fan, the fan including a volute and a rotor inside the volute, and a connecting column provided on the upper side of the fan; a motor located on the upper side of the volute, the motor being connected to the rotor via a motor shaft, the outer side wall of the motor having a mounting portion, the mounting portion having a mounting groove on its side wall, the mounting groove having a vertically penetrating mounting hole; a connecting sleeve passing through the mounting hole, the connecting sleeve having a connecting through hole, a fastening screw inserted into the connecting through hole, the motor being connected to the connecting column of the fan via the fastening screw.

[0006] According to some embodiments of the present invention, the horizontal cross-section of the mounting part is "C" shaped, the side wall of the mounting part has a snap-fit ​​part, the mounting groove has a mounting groove opening, and the mounting groove opening is located between the snap-fit ​​parts.

[0007] According to some embodiments of the present invention, the connecting sleeve is provided with connecting sleeve bosses on the upper and lower sides, the outer wall of the connecting sleeve abuts against the side wall of the mounting groove, and the connecting sleeve bosses on the upper and lower sides respectively lock the upper and lower ends of the mounting part.

[0008] According to some embodiments of the present invention, the motor sidewall is provided with a motor side groove, and the mounting part is located below the motor side groove.

[0009] According to some embodiments of the present invention, the motor has at least three mounting portions, each of which is distributed around the outer side wall of the motor.

[0010] According to some embodiments of the present invention, a connecting column step is provided at the upper end of the outer wall of the connecting column. The connecting column step has a vertical step surface and a horizontal step surface. The vertical step surface is locked against the hole wall surface at the lower part of the connecting through hole, and the horizontal step surface abuts against the lower end surface of the connecting sleeve.

[0011] The motor structure according to the embodiment of this utility model has at least the following technical effects:

[0012] 1. The connecting sleeve on the motor is connected to the connecting column of the fan by fastening screws, and the mounting part is located on the outer wall of the motor, making the connection between the motor and the fan more compact. The connecting sleeve can be flexibly replaced. If it is found that the original connecting through hole or other position of the connecting sleeve affects the motor connection, it is not necessary to replace the motor, but only to replace the appropriate connecting sleeve. Ensure that the connecting sleeve is sufficiently stable after the screws are tightened.

[0013] 2. The connecting sleeve is made of shock-absorbing material. The vibration generated during the air extraction process is attenuated by the buffering effect of the connecting sleeve, which reduces the resonance caused by the vibration of the motor and the fan, thus achieving the technical effect of reducing noise.

[0014] 3. After the fastening screws are installed and tightened on the connecting through hole, the fastening screws push outward against the wall of the connecting through hole of the connecting sleeve, so that the connecting sleeve can not only support the mounting groove, but also ensure that the snap-fit ​​part of the mounting part can lock the connecting sleeve, so that the connection between the connecting sleeve and the mounting part will not loosen.

[0015] 4. The connecting post step abuts against the connecting sleeve. The vertical surface of the step is locked against the lower wall of the connecting through hole to prevent horizontal displacement between the connecting sleeve and the connecting post. The horizontal surface of the step abuts against the lower end of the connecting sleeve to ensure that the connecting sleeve can be limited and fixed in the vertical direction, thus providing better stability for the connecting sleeve.

[0016] The fully premixed fan according to a second aspect of the present invention includes the motor structure according to the first aspect of the present invention described above.

[0017] According to some embodiments of the present invention, the volute includes an upper cover plate and a main volute, the connecting column is located on the upper side of the upper cover plate, the upper cover plate has a motor shaft through hole, the motor shaft passes through the motor shaft through hole and is connected to the impeller, the side wall of the main volute has an air outlet opening, and the lower side of the main volute has an air inlet opening.

[0018] According to some embodiments of this utility model, an air inlet shell is covered on the lower side of the air inlet opening, and a gas interface and an air interface are provided on the air inlet shell, with the gas interface connected to an external gas source.

[0019] According to some embodiments of this utility model, a plurality of sets of connecting columns are provided on the upper side of the fan, and each set of connecting columns can be used to install motors of different models.

[0020] The fully premixed fan according to the embodiments of this utility model has at least the following beneficial effects:

[0021] 1. The connecting sleeve on the motor is connected to the connecting column of the fan by fastening screws, and the mounting part is located on the outer wall of the motor, making the connection between the motor and the fan more compact;

[0022] 2. Outside air enters the air intake shell through the air interface, and the fuel gas enters the air intake shell through the fuel gas interface. In this way, the air and fuel gas are premixed inside the air intake shell, providing a stable environment for the premixing of air and fuel gas, which is conducive to more stable and reliable operation of the fully premixed fan.

[0023] 3. When assembling the fully premixed fan, first install the connecting sleeve on the motor mounting part, then place the motor in a suitable position on the upper cover plate, install and tighten the fastening screws, then install the impeller on the motor shaft, adjust the balance, then install the main volute on the upper cover plate, and finally install the air inlet casing. The whole assembly process is simpler.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a perspective view of the motor structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the motor structure of this utility model;

[0028] Figure 3 This is an exploded structural diagram of the motor structure of this utility model;

[0029] Figure 4 yes Figure 3 Enlarged view of region A in the middle;

[0030] Figure 5 This is a partial sectional view of the motor structure of this utility model;

[0031] Figure 6 yes Figure 5 A magnified view of region B in the middle.

[0032] Figure label:

[0033] Fan 100, volute 110, main volute 120, air outlet 121, air inlet 122, top cover 130, motor shaft through hole 131, connecting column 140, connecting column step 141, step vertical surface 142, step horizontal surface 143, impeller 150, air inlet shell 160, gas interface 161, air interface 162; motor 200, motor shaft 210, mounting part 220, mounting groove 221, mounting hole 222, snap-fit ​​part 223, mounting groove opening 224, motor side groove 230; connecting sleeve 300, connecting through hole 310, connecting sleeve boss 320; fastening screw 400, screw thread part 410, screw head 420. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "multiple" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] The following is for reference. Figure 1 and Figure 2 The motor structure according to an embodiment of the present utility model is described.

[0039] like Figure 1 and Figure 2 As shown, the motor structure according to an embodiment of the present utility model includes a fan 100, a motor 200, and a connecting sleeve 300.

[0040] The fan 100 includes a volute 110 and a rotor 150 inside the volute 110. A connecting column 140 is provided on the upper side of the fan 100. The motor 200 is located on the upper side of the volute 110 and is connected to the rotor 150 through a motor shaft 210. A mounting part 220 is provided on the outer wall of the motor 200. A mounting groove 221 is opened on the side wall of the mounting part 220, and the mounting groove 221 has a vertically penetrating mounting hole 222. (Refer to...) Figure 3 , Figure 4 The connecting sleeve 300 passes through the mounting hole 222. The connecting sleeve 300 has a connecting through hole 310. A fastening screw 400 is inserted into the connecting through hole 310. The motor 200 and the connecting post 140 of the fan 100 are connected by the fastening screw 400.

[0041] For example, such as Figure 1 and Figure 2 As shown, the fan 100 includes a volute 110 and a fan wheel 150 inside the volute 110, with the fan wheel 150 serving as the air extraction component of the fan 100. A connecting column 140 is provided on the upper side of the fan 100, and the connecting column 140 is fixed relative to the fan 100. The motor 200 is located on the upper side of the volute 110, and the motor 200 is connected to the fan wheel 150 through a motor shaft 210, meaning that when the motor 200 starts, it drives the fan wheel 150 to rotate, performing air extraction. A mounting part 220 is provided on the outer wall of the motor 200, and the mounting part 220 is fixed relative to the motor 200. A mounting groove 221 is formed on the side wall of the mounting part 220, and the mounting groove 221 has a vertically penetrating mounting hole 222. (Refer to...) Figure 3 , Figure 4 The connecting sleeve 300 passes through the mounting hole 222, meaning the outer wall of the connecting sleeve 300 can engage the mounting groove 221. The connecting sleeve 300 has a connecting through hole 310, into which a fastening screw 400 is inserted. The motor 200 and the connecting post 140 of the fan 100 are connected by the fastening screw 400. Specifically, the fastening screw 400 secures the motor 200 and the fan 100 together by engaging the connecting through hole 310 between the mounting part 220 of the motor 200 and the fan 100.

[0042] During actual installation, first install the connecting sleeve 300 in the mounting part 220 of the motor 200. Then, align the motor 200 on the fan 100, ensuring that the connecting through hole 310 on the connecting sleeve 300 is aligned with the connecting post 140 on the fan 100. Finally, install and tighten the fastening screw 400 into the connecting through hole 310. This fixes the motor 200 to the fan 100. The mounting part 220 is located on the outer wall of the motor 200, making the connection between the motor 200 and the fan 100 more compact.

[0043] In actual work, refer to Figure 5 , Figure 6 When the motor 200 is started, it drives the impeller 150 inside the volute 110 to rotate via the motor shaft 210, thus performing the suction operation. If any fixing screw 400 of the motor 200 is found to be loose, the connecting sleeve 300 can be directly replaced to ensure that all connecting sleeves 300 of the motor 200 are sufficiently secure and reliable after the fixing screws 400 are installed. This ensures the stability of the motor structure of this utility model and guarantees that its service life meets the requirements.

[0044] In some embodiments of this invention, the connecting sleeve 300 is made of a shock-absorbing material. During the aforementioned air extraction process, the motor 200 and fan 100 will vibrate. This vibration is damped by the buffering effect of the connecting sleeve 300, reducing resonance caused by the vibration of the motor 200 and fan 100. This reduces noise during operation of the motor 200 and fan 100, resulting in a quieter and more stable motor structure in this invention.

[0045] In some embodiments of this utility model, reference is made to Figure 4 The horizontal cross-section of the mounting part 220 is "C" shaped. The side wall of the mounting part 220 has a snap-fit ​​part 223. The mounting groove 221 has a mounting groove opening 224, which is located between the snap-fit ​​parts 223.

[0046] The connecting sleeve 300 can pass through the mounting slot opening 224 and be inserted into the mounting slot 221. Then, after the fastening screw 400 is installed on the connecting through hole 310 and tightened, the fastening screw 400 pushes outward against the wall of the connecting through hole 310 of the connecting sleeve 300, so that the connecting sleeve 300 can not only support the mounting slot 221, but also ensure that the snap-fit ​​part 223 of the mounting part 220 can lock the connecting sleeve 300, so that the connection between the connecting sleeve 300 and the mounting part 220 will not loosen.

[0047] In some embodiments of this utility model, reference is made to Figure 6The connecting sleeve 300 is provided with connecting sleeve bosses 320 at the top and bottom. The outer wall of the connecting sleeve 300 abuts against the side wall of the mounting groove 221, and the connecting sleeve bosses 320 on the upper and lower sides respectively lock the upper and lower ends of the mounting part 220. In this way, after the connecting sleeve 300 is connected to the mounting part 220, the connecting sleeve bosses 320 on the upper and lower sides limit the vertical direction of the connecting sleeve 300, ensuring that the connection between the connecting sleeve 300 and the mounting part 220 is more stable and reliable.

[0048] In some embodiments of this utility model, reference is made to Figure 1 The motor 200 has a motor-side groove 230 on its side wall, and the mounting part 220 is located on the lower side of the motor-side groove 230. This design ensures that the mounting part 220 is contained within the motor-side groove 230, meaning that the mounting part 220 does not need to extend outside the motor 200. This design protects the mounting part 220 and makes the overall structure of the motor 200 more compact.

[0049] In some embodiments of this utility model, the motor 200 has at least three mounting portions 220, each of which is distributed around the outer side wall of the motor 200. This ensures that the connecting sleeve 300 and the fastening screw 400 are fixed around the motor 200, further ensuring a more stable installation of the motor 200.

[0050] In some embodiments of this utility model, reference is made to Figure 4 , Figure 6 A connecting post step 141 is provided at the upper end of the outer wall of the connecting post 140. The connecting post step 141 has a vertical step surface 142 and a horizontal step surface 143. The vertical step surface 142 is engaged with the lower hole wall surface of the connecting through hole 310, and the horizontal step surface 143 abuts against the lower end face of the connecting sleeve 300. In this way, the connecting post 140 can provide better stability for the connecting sleeve 300. The vertical step surface 142 engages with the connecting through hole 310 to prevent horizontal displacement between the connecting sleeve 300 and the connecting post 140. The horizontal step surface 143 abuts against the lower end face of the connecting sleeve 300 to ensure that the connecting sleeve 300 can be vertically limited and fixed.

[0051] The fully premixed fan according to a second aspect of the present invention includes the motor structure according to the first aspect of the present invention described above.

[0052] According to the embodiments of the present invention, the fully premixed fan, by adopting the above-mentioned motor structure, reduces the installation difficulty of the fully premixed fan, makes the overall assembly simple and compact, reduces quality control requirements, and helps to reduce costs and improve production efficiency.

[0053] In some embodiments of this utility model, reference is made to Figure 3The volute 110 includes an upper cover plate 130 and a main volute 120. A connecting post 140 is located on the upper side of the upper cover plate 130. The upper cover plate 130 has a motor shaft through hole 131, through which the motor shaft 210 passes and connects to the impeller 150. The main volute 120 has an air outlet opening 121 on its side wall and an air inlet opening 122 on its lower side. The upper cover plate 130 and the main volute 120 are detachable, which facilitates the connection and installation of the impeller 150 and the motor shaft.

[0054] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3 The air inlet opening 122 is covered by an air inlet housing 160. The air inlet housing 160 has a gas inlet 161 and an air inlet 162. The gas inlet 161 is connected to an external gas source. Outside air enters the air inlet housing 160 through the air inlet 162, and the gas enters the air inlet housing 160 through the gas inlet 161. This allows the air and gas to premix within the air inlet housing 160. This provides a stable environment for the premixing of air and gas, which is beneficial for the more stable and reliable operation of the fully premixed fan.

[0055] In some embodiments of this utility model, the upper side of the fan 100 is provided with several sets of connecting columns 140, each set of connecting columns 140 being capable of mounting different models of motors 200. Thus, the upper cover plate 130 pre-sets several sets of connecting columns 140 according to the dimensions of the different models of motors 200 that may need to be installed. This allows for flexible selection of motors 200 to match the corresponding connecting columns 140 as needed. In other words, one fan 100 can be used with multiple fan 100 models without needing to replace the upper cover plate 130 or even the entire volute 110.

[0056] Other components and operations of the fully premixed fan according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0057] The following is for reference. Figure 1 and Figure 2 The motor structure according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0058] like Figure 1 and Figure 2 As shown, the fully premixed fan according to an embodiment of the present invention includes a fan 100, a motor 200, a connecting sleeve 300, and fastening screws 400.

[0059] The fan 100 includes a volute 110 and an impeller 150. The volute 110 includes a main volute 120, an upper cover plate 130, and an air inlet shell 160. The main volute 120 is provided with an air outlet 121 and an air inlet 122. The upper cover plate 130 is provided with a motor shaft through hole 131 and a connecting post 140. The connecting post 140 is provided with a connecting post step 141, a step vertical surface 142, and a step horizontal surface 143. The air inlet shell 160 is provided with a gas inlet 161 and an air inlet 162.

[0060] The motor 200 is located on the upper cover plate 130. The motor 200 is provided with a motor shaft 210, a mounting part 220, a mounting groove 221, a mounting hole 222, a snap-fit ​​part 223, a mounting groove opening 224, and a motor side groove 230.

[0061] The connecting sleeve 300 is connected to the mounting part 220. The connecting sleeve 300 on the motor 200 is connected to the connecting post 140 of the fan 100 by a fastening screw 400. The connecting sleeve 300 is provided with a connecting through hole 310 and a connecting sleeve boss 320. The fastening screw 400 has a screw thread portion 410 and a screw head 420.

[0062] In some embodiments of this utility model, the assembly steps of the fully premixed fan are as follows:

[0063] Install the connecting sleeve 300 on the mounting part 220 of the motor 200; place the motor 200 in a suitable position on the upper cover plate 130, and tighten the fastening screws 400; install the impeller 150 on the motor shaft 210 and adjust the balance; install the main volute 120 on the upper cover plate 130; install the air inlet casing 160. When it is necessary to dismantle the utility model fully premixed fan, simply reverse the above process.

[0064] According to the motor structure of this utility model embodiment, the following effects can be achieved by setting it up as follows: First, the connecting sleeve 300 is installed in the mounting part 220 of the motor 200. Then, the motor 200 is aligned with the fan 100 so that the connecting through hole 310 on the connecting sleeve 300 is aligned with the connecting post 140 on the fan 100. Then, the fastening screw 400 is installed on the connecting through hole 310 and tightened. The mounting part 220 is located on the outer wall of the motor 200, making the connection between the motor 200 and the fan 100 more compact. If it is found that a certain fixing screw 400 of the motor 200 is loose, the connecting sleeve 300 can be directly replaced to ensure that the connecting sleeves 300 at all parts of the motor 200 are sufficiently stable and reliable after the fastening screw 400 is installed. This ensures the stability of the motor structure of this utility model and guarantees that the service life meets the requirements. During the air extraction process, the motor 200 and the fan 100 will vibrate. The vibration generated by the motor 200 and the fan 100 will be attenuated by the buffering effect of the connecting sleeve 300, thereby reducing the resonance phenomenon caused by the vibration of the motor 200 and the fan 100 and reducing noise.

[0065] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor structure, characterized in that, include: A fan (100) includes a volute (110) and a fan wheel (150) inside the volute (110), and a connecting column (140) is provided on the upper side of the fan (100). The motor (200) is located on the upper side of the volute (110). The motor (200) is connected to the impeller (150) through the motor shaft (210). The outer wall of the motor (200) is provided with a mounting part (220). The mounting part (220) has a mounting groove (221) on its side wall. The mounting groove (221) has a mounting hole (222) that runs vertically through it. A connecting sleeve (300) is inserted into the mounting hole (222). A connecting through hole (310) is provided on the connecting sleeve (300). A fastening screw (400) is inserted into the connecting through hole (310). The motor (200) and the connecting column (140) of the fan (100) are connected by the fastening screw (400).

2. The motor structure according to claim 1, characterized in that, The horizontal cross-section of the mounting part (220) is "C" shaped. The mounting part (220) has a snap-fit ​​part (223) on its side wall. The mounting groove (221) has a mounting groove opening (224) located between the snap-fit ​​parts (223).

3. The motor structure according to claim 1, characterized in that, The connecting sleeve (300) is provided with connecting sleeve bosses (320) on the upper and lower sides. The outer wall of the connecting sleeve (300) abuts against the side wall of the mounting groove (221), and the connecting sleeve bosses (320) on the upper and lower sides respectively lock the upper and lower ends of the mounting part (220).

4. The motor structure according to claim 2, characterized in that, The motor (200) has a motor side groove (230) on its side wall, and the mounting part (220) is located below the motor side groove (230).

5. The motor structure according to claim 1, characterized in that, The connecting sleeve (300) is made of shock-absorbing material.

6. The motor structure according to claim 1, characterized in that, The upper end of the outer wall of the connecting column (140) is provided with a connecting column step (141). The connecting column step (141) has a vertical step surface (142) and a horizontal step surface (143). The vertical step surface (142) is stuck in the lower hole wall surface of the connecting through hole (310), and the horizontal step surface (143) abuts against the lower end surface of the connecting sleeve (300).

7. A fully premixed fan, characterized in that, Includes the motor structure according to any one of claims 1 to 6.

8. The fully premixed fan according to claim 7, characterized in that, The volute (110) includes an upper cover plate (130) and a main volute (120). The connecting column (140) is located on the upper side of the upper cover plate (130). The upper cover plate (130) has a motor shaft through hole (131). The motor shaft (210) passes through the motor shaft through hole (131) and is connected to the impeller (150). The side wall of the main volute (120) has an air outlet (121), and the lower side of the main volute (120) has an air inlet (122).

9. The fully premixed fan according to claim 8, characterized in that, The air inlet opening (122) is covered by an air inlet shell (160), and the air inlet shell (160) is provided with a gas interface (161) and an air interface (162). The gas interface (161) is connected to an external gas source.

10. The fully premixed fan according to claim 7, characterized in that, The fan (100) is provided with several sets of connecting columns (140) on its upper side, and each set of connecting columns (140) can be used to install different models of motors (200).

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