An air conditioner indoor unit motor and fan wheel easy disassembly structure

Abstract

The utility model discloses an easily dismountable structure of air conditioner indoor unit motor and air wheel, including bottom disc, air wheel and motor, the first cavity of placing motor and the second cavity of placing air wheel are provided with respectively to the bottom disc, set up as open type on the first cavity far side from air wheel, install detachable motor support in the first cavity, and the motor support includes bracket and pressing plate, and the motor can be quickly disassembled through the disassembly and assembly pressing plate and bracket, in order to facilitate installation, and the motor is provided with front and rear positioning circular table, and the bracket is provided with the preloading of placing air wheel on the side close to the motor in the second cavity, can be through the arc pipe site center of the first pipe groove of bottom disc, the bracket of the third pipe groove of the pipe groove of bottom disc and the bracket and set up in the coaxial state, realize when installing motor and air wheel, and the motor shaft and air wheel are in the coaxial precentering state, just push in simultaneously with the left and right hand of motor and air wheel, can realize the shaft hole alignment assembly, and the above structure is simple, convenient operation, improves the motor efficiency of after-sales replacement, and shortens the maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an easy-to-disassemble structure for the motor and fan wheel of an air conditioner indoor unit. Background Technology

[0002] In practice, the indoor unit motor is installed below the evaporator, and the evaporator is welded firmly to the compressor piping. When the motor needs to be replaced after the service is interrupted, the evaporator must be removed first, the piping cut, and then the motor removed. After replacing the motor, the evaporator is reinstalled, the piping is welded, vacuuming is performed, and refrigerant is added. This process is cumbersome, time-consuming, and costly. Although a motor detachable solution has recently appeared on the market, the disassembly structure is complex. Moreover, while the disassembly problem is solved, new problems arise. When reinstalling the motor, since the fan wheel is no longer supported by the motor shaft, it naturally rests on the chassis. The fan wheel can only be supported by hand. However, since the evaporator blocks the view, it is impossible to see with the naked eye whether the motor shaft is aligned with the round hole of the fan wheel shaft sleeve and inserted into place. It is difficult to center and insert the motor, making it inconvenient and time-consuming for after-sales replacement of the motor and installation of the fan wheel. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention features a motor bracket and motor designed for easy disassembly and assembly. A motor positioning slot is provided in the chassis and bracket, and a support groove is provided in the chassis. The support groove pre-supports the impeller. The arc centers of the slot and the support groove are pre-set to be coaxial, thus pre-aligning the motor and impeller. Therefore, during motor installation, the alignment of the motor shaft with the impeller's circular hole can be completed directly without observation.

[0004] This utility model provides an easy-to-disassemble structure for the motor and fan of an air conditioner indoor unit, solving the problems of difficult disassembly and assembly of the motor and fan in existing air conditioner indoor unit systems. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0005] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and a fan wheel includes a chassis, a fan wheel, and a motor. The chassis is provided with a first cavity and a second cavity. The first cavity houses the motor, a motor bracket, and a motor cover. The motor bracket includes a bracket and a pressure plate. The motor is provided with a front positioning frustum and a rear positioning frustum. The front positioning frustum of the motor is installed and clamped in a positioning groove formed by the first cavity and the motor cover fastening together. The rear positioning frustum of the motor is installed and clamped in a positioning groove formed by the bracket and the pressure plate fastening together. The second cavity is provided with a groove for pre-installing the fan wheel on the side near the motor. The arc centers of the groove and the groove are set as concentric axes.

[0006] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and fan wheel is provided. A first tube groove is provided on the side of the first cavity near the second cavity, a second tube groove is provided at the lower end of the motor cover, a third tube groove is provided at the upper end of the bracket, a fourth tube groove is provided at the lower end of the pressure plate, and an evaporator is installed above the motor cover.

[0007] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and a fan wheel is provided, wherein the support groove is an arc-shaped structure or a dispersed support rib structure.

[0008] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and a fan wheel is provided. The first and second pipe grooves are both arc-shaped or fan-shaped, and the first and second pipe grooves have the same center and equal inner diameter. The third and fourth pipe grooves are both arc-shaped or fan-shaped, and the third and fourth pipe grooves have the same center and equal inner diameter.

[0009] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and a fan wheel is provided. The first cavity is open on the side away from the fan wheel, and a guide groove is provided on the side close to the open side. A guide block is provided at the lower end of the bracket. The guide block can be disassembled and moved along the guide groove. The bracket is provided with a support plate and a through hole. The first cavity is provided with a support platform and a screw post. The bracket is installed on the support platform. The pressure plate is provided with a retaining rib and a through hole. The first cavity is provided with a retaining groove. The retaining rib can be inserted into the retaining groove.

[0010] According to some embodiments of this utility model, an easy-to-disassemble structure for an air conditioner indoor unit motor and a fan wheel is provided, wherein the first pipe groove and the third pipe groove are configured to be coaxial, and the arc-shaped central axis of the support groove is configured to be similarly coaxial with the arc-shaped central axis of the first pipe groove and the third pipe groove, with the axis center deviation within ±5mm.

[0011] According to some embodiments of this utility model, the arc radius of the arc structure of the support groove is larger than the outer diameter of the wind turbine, and the number of dispersed support ribs of the support groove is set to N, where 2≤N≤40.

[0012] According to some embodiments of this utility model, the bracket is placed between the pressure plate and the chassis bracket groove, and is clamped by inserting a retaining rib into the groove or locked by screws.

[0013] 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, and at least the following beneficial effects are present:

[0014] By designing the motor bracket and motor as easily detachable structures, and by incorporating motor positioning slots in the chassis and brackets, and mounting grooves in the chassis to pre-support the impeller, with the arc centers of the slots and mounting grooves pre-set to be coaxial, the motor and impeller are pre-aligned. During motor installation, alignment of the motor shaft with the impeller's circular hole can be achieved directly without observation. This solution not only facilitates easy disassembly and assembly of the motor and chassis but also ensures pre-alignment of the motor and impeller during assembly. It solves the problems of difficult motor replacement and disassembly after installation, and misalignment of the motor shaft and impeller bushing during reinstallation. Furthermore, the structure is simple, shortening after-sales repair time and reducing maintenance costs. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an exploded view of the overall structure of an easily detachable assembly / disassembly structure for an air conditioner indoor unit motor and fan wheel, according to an embodiment of this utility model.

[0017] Figure 2 for Figure 1 Exploded view of a local structure;

[0018] Figure 3 for Figure 1 Exploded view of a local structure;

[0019] Figure 4 for Figure 1 A partial structural assembly sectional view;

[0020] Figure 5 for Figure 1 A partial structural diagram of the chassis components.

[0021] Icon labels:

[0022] The components are as follows: 1. Chassis; 11. Second cavity; 111. Support groove; 12. First cavity; 121. First pipe groove; 122. Guide groove; 123. Support platform; 124. Slot; 2. Fan wheel; 21. Fan blade; 22. Bushing; 221. Round hole; 23. Hub; 3. Motor; 31. Rotating shaft; 32. Front truncated cone; 33. Rear truncated cone; 4. Motor bracket; 41. Bracket; 411. Third pipe groove; 412. Guide block; 42. Pressure plate; 421. Fourth pipe groove; 422. Bracket; 5. Motor cover; 51. Second pipe groove; 6. Evaporator. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] 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.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Any mention of "first" or "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0026] 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.

[0027] refer to Figures 1 to 5 This invention describes an easy-to-disassemble structure for an air conditioner indoor unit motor 3 and a fan wheel 2 according to an embodiment of the present invention.

[0028] like Figure 1 , 2 and Figure 3As shown, optionally, an easy-to-disassemble structure for an air conditioner indoor unit motor 3 and fan wheel 2 includes a chassis 1, a fan wheel 2, and a motor 3. The chassis 1 is provided with a first cavity 12 and a second cavity 11. The first cavity 12 is equipped with the motor 3, a motor bracket 4, and a motor cover 5. The evaporator 6 is installed above the motor cover 5, and the motor cover 5 is installed above the motor 3 to prevent condensation from forming on the evaporator 6. After the entire unit is installed, the motor 3 will be covered by the evaporator 6 and the motor cover 5. If the motor cover 5 needs to be removed, the evaporator 6 needs to be removed first. However, the evaporator 6 is connected to the copper pipe of the outdoor unit, making disassembly and assembly quite troublesome. Therefore, in the prior art, after-sales replacement and installation of the motor 3 is quite troublesome. For this reason, the present invention designs the motor 3 and the motor bracket 4... The chassis 1 has an easy-to-disassemble structure. The first cavity 12 of the chassis 1 is set to be open on the side away from the impeller 2. Specifically, the motor bracket 4 is set as a bracket 41 and a pressure plate 42. The motor 3 is equipped with front and rear positioning truncated cones. The front positioning truncated cone of the motor 3 is installed and clamped in the positioning tube groove formed by the first cavity 12 and the motor cover 5 to fix the front end of the motor 3. The rear positioning truncated cone of the motor 3 is installed and clamped in the positioning tube groove formed by the bracket 41 and the pressure plate 42 to fix the rear end of the motor 3. When disassembly is required, first remove the pressure plate 42, then remove the bracket 41, and finally remove the motor 3. By holding the motor 3, it can be directly pulled out along the open side of the first cavity 12. Disassembly can be completed quickly without removing the evaporator 6 and the motor cover 5.

[0029] Furthermore, in some embodiments of this utility model, optionally, for ease of understanding and to achieve the desired effect, the first cavity 12 is provided with a first groove 121 on the side near the second cavity 11, the lower end of the motor cover 5 is provided with a second groove 51, the upper end of the bracket 41 is provided with a third groove 411, and the lower end of the pressure plate 42 is provided with a fourth groove 421.

[0030] Furthermore, in some embodiments of this utility model, optionally, in order to achieve the assembly effect, the first tube groove 121 and the second tube groove 51 are both arc-shaped or fan-shaped, the first tube groove 121 and the second tube groove 51 have the same center and the same inner diameter, the third tube groove 411 and the fourth tube groove 421 are both arc-shaped or fan-shaped, the third tube groove 411 and the fourth tube groove 421 have the same center and the same inner diameter.

[0031] Furthermore, in some embodiments of this utility model, optionally, the side of the first cavity 12 away from the impeller 2 is open, and a guide groove 122 is provided on the side close to the open. A guide block 412 is provided at the lower end of the bracket 41. The guide block 412 can be disassembled and moved along the guide groove 122. The bracket 41 is provided with a support plate and a through hole. The first cavity 12 is provided with a support platform 123 and a screw post. The bracket 41 is installed on the support platform 123. The pressure plate 42 is provided with a retaining rib 422 and a through hole. The first cavity 12 is provided with a slot 124. The retaining rib 422 can be inserted into the slot 124. The bracket 41 is placed between the pressure plate 42 and the support platform 123 of the chassis 1, and is clamped by the retaining rib 422 inserted into the slot 124 or locked by screws.

[0032] Furthermore, when the motor 3 needs to be replaced during maintenance, first remove the pressure plate 42, then loosen the limiting screw of the impeller 2, hold the impeller 2 with one hand, and use the other hand to remove the bracket 41. Pull the bracket 41 outward, and after removing the bracket 41, grab the motor 3 and move it outward. Apply force slowly to separate the motor 3 from the impeller 2. Finally, pull the motor 3 completely out directly from the open side of the first cavity 12 to complete the disassembly of the motor 3. There is no need to remove the evaporator 6 and the motor cover 5. The operation is simple, time-saving and labor-saving.

[0033] like Figure 1 and Figure 5 As shown, optionally, in some embodiments of this utility model, the process of installing motor 3 is exactly the opposite of that of disassembling motor 3. However, in the current technology, when reinstalling motor 3, since the impeller 2 is no longer supported by the motor 3 shaft, the impeller 2 naturally falls on the chassis 1 and can only be supported by hand. However, since the evaporator 6 blocks the view, it is impossible to see with the naked eye whether the motor 3 shaft is aligned with the through hole of the impeller 2 shaft sleeve 22, which makes it very time-consuming to replace motor 3 and install impeller 2.

[0034] Furthermore, to address the difficulty in aligning the motor shaft 31 and the wind turbine bushing 22 during reinstallation of the motor 3 and the wind turbine 2, this invention provides a pre-alignment solution for the motor 3 and the wind turbine 2. Specifically, a pre-installed support groove 111 for the wind turbine 2 is provided on the side of the second cavity 11 of the chassis 1 near the motor 3. To ensure assembly effectiveness, the support groove 111 is an arc-shaped structure or a distributed support rib structure. The inner diameter of the support groove 111 is larger than the outer diameter of the wind turbine hub 23, and the arc height of the support groove 111 is not less than the diameter of the wind turbine hub 23. Alternatively, the support groove 111 can also adopt a distributed support rib structure, forming an arc-shaped groove with multiple distributed support ribs. Therefore, the number of distributed support ribs in the support groove is set to N, and 2≤N≤40.

[0035] like Figure 1 , 2 3 and Figure 4As shown, optionally, in some embodiments of this utility model, in order to achieve better pre-alignment, the first tube groove 121 and the third tube groove 411 are set to be coaxial, and the deviation between the central axis of the support groove 111 and the central axis of the first tube groove 121 and the third tube groove 411 is controlled within ±5mm. This can be achieved by setting the arc-shaped tube center of the first tube groove 121 of the chassis 1, the support groove 111 of the chassis 1 and the third tube groove 411 of the bracket 41 to be in a coaxial state. When installing the motor 3 and the impeller 2, the motor shaft 31 and the impeller 2 are in a coaxial pre-alignment state. As long as the motor shaft 31 and the impeller 2 are pushed in by both hands at the same time, the shaft hole alignment assembly can be achieved.

[0036] Further, the reinstallation process of motor 3 and impeller 2 is as follows: Hold impeller 2 with one hand and place it on the bracket 111 of the second cavity 11. Hold motor 3 with the other hand and push it into the open side of the first cavity 12. Then install bracket 41. At this time, make sure to align the guide block 412 of bracket 41 with the guide groove 122 of chassis 1. Then, use both hands to slowly push with external force. You should feel a slight twisting of motor 3 or impeller 2. When you feel that the motor shaft 31 has been inserted into the round hole 221 of impeller, push harder until you can't push it anymore. Then, tighten the limit screw of impeller 2 and finally lock the pressure plate to complete the installation.

[0037] In summary, by providing a first cavity 12 for housing the motor 3 and a second cavity 11 for housing the impeller 2 in the chassis 1, the motor 3 and the impeller 2 can be disassembled and moved along the axial direction of the motor 3 within the cavities. The first cavity 12 is open on the side away from the impeller 2. A detachable motor bracket 4 is installed in the first cavity 12. The motor bracket 4 includes a bracket 41 and a pressure plate 42. The motor 3 can be quickly disassembled and assembled by only disassembling and assembling the pressure plate 42 and the bracket 41. For ease of installation, the motor 3 is equipped with front and rear positioning truncated cones, and the impeller wheel... Hub 23 has the largest diameter. When reinstalling motor 3, the arc-shaped tube center of the first tube groove 121 of chassis 1, the bracket groove 111 of chassis 1, and the third tube groove 411 of bracket 41 can be set in a coaxial state. This ensures that when installing motor 3 and impeller 2, the motor shaft 31 and the circular hole 221 of impeller 2 are in a coaxial pre-aligned state. Simply push motor 3 and impeller 2 in with both hands at the same time to achieve shaft hole alignment and assembly. The above structure is simple, easy to operate, improves the efficiency of after-sales replacement of motor 3, and shortens maintenance time.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An easily detachable structure for an air conditioner indoor unit motor and fan wheel, comprising a chassis, a fan wheel, and a motor, characterized in that, The chassis is provided with a first cavity and a second cavity. The first cavity is equipped with a motor, a motor bracket, and a motor cover. The motor bracket includes a bracket and a pressure plate. The motor is provided with a front positioning frustum and a rear positioning frustum. The front positioning frustum of the motor is installed and clamped in the positioning tube groove formed by the first cavity and the motor cover. The rear positioning frustum of the motor is installed and clamped in the positioning tube groove formed by the bracket and the pressure plate. The second cavity is provided with a slot for pre-installing the impeller on the side near the motor. The arc centers of the tube groove and the slot are set to be coaxial.

2. The easily detachable structure for the motor and fan wheel of an air conditioner indoor unit according to claim 1, characterized in that, A first tube groove is provided on the side of the first cavity near the second cavity, a second tube groove is provided at the lower end of the motor cover, a third tube groove is provided at the upper end of the bracket, a fourth tube groove is provided at the lower end of the pressure plate, and an evaporator is installed above the motor cover.

3. The easily detachable structure for the motor and fan wheel of an air conditioner indoor unit according to claim 1, characterized in that, The bracket is an arc-shaped structure or a distributed support structure.

4. The easily detachable structure for the motor and fan of an air conditioner indoor unit according to claim 2, characterized in that, The first and second pipe grooves are both arc-shaped or fan-shaped, and the first and second pipe grooves have the same center and the same inner diameter. The third and fourth pipe grooves are both arc-shaped or fan-shaped, and the third and fourth pipe grooves have the same center and the same inner diameter.

5. The easily detachable structure for the motor and fan wheel of an air conditioner indoor unit according to claim 2, characterized in that, The first cavity is open on the side away from the wind turbine, and a guide groove is provided on the side closer to the open side. A guide block is provided at the lower end of the bracket, and the guide block can be disassembled and moved along the guide groove. The bracket is provided with a support plate and a through hole. The first cavity is provided with a support platform and a screw post. The bracket is installed on the support platform. The pressure plate is provided with a retaining rib and a through hole. The first cavity is provided with a retaining groove, and the retaining rib can be inserted into the retaining groove.

6. The easily detachable structure for the motor and fan of an air conditioner indoor unit according to claim 2 or 4, characterized in that, The first and third pipe grooves are coaxial, and the arc-shaped central axis of the bracket is similarly coaxial with the arc-shaped central axis of the first and third pipe grooves, with the center deviation of the axis within ±5mm.

7. The easily detachable structure for the motor and fan of an air conditioner indoor unit according to claim 3, characterized in that, The radius of the arc structure is greater than the outer diameter of the wind turbine, and the number of the distributed support ribs is set to N, where 2≤N≤40.

8. The easily detachable structure for the motor and fan wheel of an air conditioner indoor unit according to claim 5, characterized in that, The bracket is placed between the pressure plate and the chassis bracket groove, and is clamped by the retaining rib inserted into the groove or locked by the screw.

Images