Motor assembly for through-wall type fresh air ventilator and through-wall type fresh air ventilator

Abstract

The invention relates to the technical field of air conditioning equipment, and discloses a motor assembly for a through-wall type fresh air ventilator, and the motor assembly comprises a motor sleeve which is internally provided with a mounting space and comprises an open end and a closed end which are oppositely arranged; the limiting parts are arranged at the open end at intervals in the circumferential direction of the motor sleeve; and the motor is arranged in the mounting space and comprises a motor main body which is coaxially arranged with the motor sleeve, and the motor main body can be clamped between the limiting part and the closed end. The complexity of the fixing structure of the motor can be reduced, the installation of the motor is facilitated, and the installation efficiency is improved. The invention further discloses the through-wall type fresh air ventilator.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning equipment, for example, to a motor assembly for a through-the-wall fresh air fan and a through-the-wall fresh air fan. Background Art

[0002] At present, with the improvement of people's living standards, fresh air fans have received widespread attention. Fresh air fans are an effective air purification device that can circulate indoor air. On the one hand, they exhaust the indoor dirty air to the outside, and on the other hand, they input the outdoor fresh air into the room, so that the room is fresh and clean at all times.

[0003] In the related art, the fresh air housing of the through-the-wall fresh air fan is embedded in the wall, and a fan is arranged in the fresh air housing, wherein the driving motor of the fan is arranged on the motor bracket, and the bottom and / or top of the driving motor is bolted to the motor bracket.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The connection structure between the drive motor and the motor bracket using bolts is complex and the installation process is relatively cumbersome.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a motor assembly for a through-the-wall fresh air fan and a through-the-wall fresh air fan, so as to reduce the complexity of the fixing structure of the motor, facilitate the installation of the motor, and improve the installation efficiency.

[0009] In some embodiments, the motor assembly for a through-the-wall fresh air fan includes: a motor sleeve, which defines an installation space internally, wherein the motor sleeve includes an open end and a closed end arranged opposite to each other; a plurality of limit portions, which are arranged at the open end at circumferential intervals along the motor sleeve; a motor, which is arranged in the installation space and includes a motor body arranged coaxially with the motor sleeve, and the motor body can be clamped between the limit portion and the closed end.

[0010] In some embodiments, the limiting portion includes: a connecting piece, including a free end and a fixed end, the fixed end is fixedly arranged at the open end; a limiting hook, arranged at the free end and extending toward the installation space, the limiting hook is used to limit the motor body from escaping from the installation space along its axial direction.

[0011] In some embodiments, the limiting hook includes: a limiting side surface extending along the radial direction of the motor sleeve, the limiting side surface being able to abut against the end surface of the motor body to form a stop fit; an installation guide surface connected to the limiting side surface and inclined toward the direction away from the closed end and toward the outer wall surface of the motor sleeve.

[0012] In some embodiments, the motor assembly for the through-the-wall fresh air fan also includes: a plurality of limiting ribs, which are arranged on the inner wall of the motor sleeve, the limiting ribs extend along the axial direction of the motor sleeve, and are arranged at intervals along the circumference of the motor sleeve, and the plurality of limiting ribs are in contact with the side wall surface of the motor body to limit the rotation of the motor body in the circumferential direction of the motor sleeve.

[0013] In some embodiments, the motor assembly for the through-the-wall fresh air fan also includes: a plurality of support arms extending radially along the motor sleeve and arranged at intervals along the circumference of the motor sleeve on the outer wall of the motor sleeve, the support arms being used to support the motor sleeve.

[0014] In some embodiments, the motor assembly for the through-the-wall fresh air fan also includes: a motor end cover, which is constructed so that the end cover profile can at least cover the open end, and the motor end cover is detachably arranged at the open end to close the installation space in the motor sleeve.

[0015] In some embodiments, the motor assembly for the through-the-wall fresh air fan further includes: a plurality of clamping portions, which are arranged on the periphery of the motor end cover in a one-to-one correspondence with the plurality of support arms, and each clamping portion is clamped with the corresponding support arm.

[0016] In some embodiments, a first support arm among the plurality of support arms is provided with a wire groove, which extends radially along the motor sleeve and is connected to the installation space for arranging motor wires connected to the motor body.

[0017] In some embodiments, the motor assembly for the through-the-wall fresh air fan also includes: a wire trough cover, which is fixedly disposed on the first clamping portion corresponding to the first support arm, extends radially along the motor sleeve, and is detachably connected to the first support arm, and the wire trough cover is used to cover the wire trough.

[0018] In some embodiments, the through-the-wall fresh air fan includes: an air duct, including an indoor air outlet and an outdoor air outlet, the interior of the air duct is defined with an air duct connecting the indoor air outlet and the outdoor air outlet; a motor assembly as described above for the through-the-wall fresh air fan is arranged in the air duct; a fan is arranged in the air duct, arranged near the closed end, the fan is driven and connected to the output shaft of the motor body, and the fan rotates under the drive of the output shaft to drive the outdoor air flow from the outdoor air outlet through the air duct to the indoor air outlet.

[0019] The motor assembly for a through-the-wall fresh air fan and the through-the-wall fresh air fan provided in the embodiments of the present disclosure can achieve the following technical effects:

[0020] The motor sleeve with an installation space defined therein has an open end and a closed end arranged relatively to each other, and the motor can enter the installation space through the open end. When the motor body is arranged in the installation space, by arranging a limiting portion at the open end, the motor body can be clamped between the limiting portion and the closed end, limiting the axial displacement of the motor body in the motor sleeve, thereby preventing the motor from escaping from the installation space, and thus achieving stable installation of the motor. In this way, the structure is simple, the motor can be installed quickly, and the installation efficiency is improved.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 It is a structural schematic diagram of a motor assembly for a through-the-wall fresh air fan provided by an embodiment of the present disclosure;

[0024] Figure 2 It is an exploded schematic diagram of a motor assembly for a through-the-wall fresh air fan provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a motor sleeve provided by an embodiment of the present disclosure;

[0026] Figure 4 yes Figure 3 A partial enlarged schematic diagram of

[0027] Figure 5 is a schematic structural diagram of a motor end cover provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic structural diagram of a motor end cover provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a structural schematic diagram of a through-the-wall fresh air fan provided by an embodiment of the present disclosure;

[0030] Figure 8 It is an exploded schematic diagram of a through-the-wall fresh air fan provided in an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 100, motor sleeve; 110, open end; 120, closed end; 200, limiting portion; 210, connecting piece; 211, free end; 212, fixed end; 220, limiting hook; 221, limiting side; 222, installation guide surface; 300, motor; 310, motor body; 320, output shaft; 400, limiting rib; 500, support arm; 510, first support arm; 511, wire duct; 520, second support arm; 600, motor end cover; 610, wire duct cover; 700, clamping portion; 710, first clamping portion; 720, second clamping portion; 730, buckle;

[0033] 10. Air duct; 11. Indoor air outlet; 12. Outdoor air outlet; 20. Fan; 30. Ring sleeve; 31. Bushing; 32. Reinforcement ribs. DETAILED DESCRIPTION

[0034] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0035] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0037] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] Unless otherwise stated, the term "plurality" means two or more.

[0039] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0040] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0042] At present, with the improvement of people's living standards, fresh air fans have received widespread attention. Fresh air fans are an effective air purification device that can circulate indoor air. On the one hand, they exhaust the indoor dirty air to the outside, and on the other hand, they input the outdoor fresh air into the room, so that the room is fresh and clean at all times.

[0043] In the related art, the fresh air housing of the through-the-wall fresh air fan is embedded in the wall, and a fan is arranged in the fresh air housing, wherein the driving motor of the fan is arranged on the motor bracket, and the bottom and / or top of the driving motor is bolted to the motor bracket. However, the connection structure between the driving motor and the motor bracket by bolts is complicated, and the installation process is relatively cumbersome.

[0044] Therefore, the embodiments of the present disclosure provide a motor assembly for a through-the-wall fresh air fan and a through-the-wall fresh air fan to reduce the complexity of the motor's fixing structure, facilitate the installation of the motor, and improve the installation efficiency.

[0045] Combination Figures 1 to 4 As shown, the motor assembly for a through-the-wall fresh air blower provided in an embodiment of the present disclosure includes a motor sleeve 100, a limiting portion 200 and a motor 300. An installation space is defined inside the motor sleeve 100. The motor sleeve 100 includes an open end 110 and a closed end 120 arranged opposite to each other. A plurality of limiting portions 200 are provided. A plurality of limiting portions 200 are arranged at the open end 110 at intervals along the circumference of the motor sleeve 100. The motor 300 is arranged in the installation space. A motor body 310 is included that is coaxially arranged with the motor sleeve 100, and the motor body 310 can be clamped between the limiting portion 200 and the closed end 120.

[0046] Optionally, the motor sleeve 100 is configured as a cylindrical shape to facilitate matching with the motor body 310. Typically, the motor body 310 is configured as a cylindrical shape. The motor can be placed in the installation space through the open end 110 and abut against the closed end 120.

[0047] Optionally, the limiting portion 200 disposed at the open end 110 can cooperate with the closed end 120. When the motor body 310 is installed in the installation space, the limiting portion 200 and the closed end 120 can clamp the motor body 310, thereby limiting the axial displacement of the motor body in the motor sleeve, thereby preventing the motor from escaping from the installation space, and achieving stable installation of the motor. In this way, the structure is simple, and the motor 300 can be quickly fixed and installed, thereby improving installation efficiency.

[0048] Optionally, a plurality of limiting portions 300 are provided and arranged at intervals along the open end 110 to improve the clamping effect on the motor 300 .

[0049] Optionally, the motor body 310 is provided with an output shaft 320, which is coaxially arranged with the motor body 310 and extends out of the installation space through the closed end 120 to be connected with the driven component. Optionally, the driven component is a fan.

[0050] The motor assembly for the through-the-wall fresh air blower provided by the embodiment of the present disclosure is adopted. The motor sleeve with the installation space defined inside has an open end and a closed end arranged relatively, and the motor can enter the installation space through the open end. When the motor body is arranged in the installation space, by providing a limiting portion at the open end, the motor body can be clamped between the limiting portion and the closed end, limiting the axial displacement of the motor body in the motor sleeve, thereby preventing the motor from escaping from the installation space, and then achieving stable installation of the motor. In this way, the structure is simple, the motor can be installed quickly, and the installation efficiency is improved.

[0051] Optionally, combined Figure 3 , Figure 4 As shown, the limiting portion 200 includes a connecting member 210 and a limiting hook 220. The connecting member 210 includes a free end 211 and a fixed end 212. The fixed end 211 is fixedly disposed at the open end 110. The limiting hook 220 is disposed at the free end 212. The limiting hook 220 extends toward the installation space and is used to limit the motor body 310 from escaping from the installation space along its axial direction.

[0052] Optionally, the connector 210 is fixedly arranged at the periphery of the open end 110 and is constructed as a plate-like structure. The fixed end 212 of the connector 210 is fixedly connected to the motor sleeve 110. There is a gap between adjacent connectors 210. In this way, the connector 210 can have a certain elasticity. When installing the motor 300, the free end 211 of the connector 210 can be bent toward the outside of the installation space relative to the fixed end 212, so that the motor body 310 can enter the installation space.

[0053] Optionally, a limiting hook 220 is provided at the free end 211 of the connecting member 210, and the limiting hook 220 protrudes and extends in the direction of the axial position of the installation space, so that when the motor body 310 is located in the installation space, the movement of the motor body 310 in its axial direction can be limited, thereby preventing the motor 300 from escaping from the installation space.

[0054] Optionally, the limiting portion 200 and the motor sleeve 100 are integrally formed, which is beneficial to optimizing the structure and reducing costs.

[0055] Optionally, combined Figure 4 As shown, the limiting hook 220 includes a limiting side surface 221 and an installation guide surface 222. The limiting side surface 221 extends along the radial direction of the motor sleeve 100, and the limiting side surface 221 can abut against the end surface of the motor body 310 to form a stop fit. The installation guide surface 222 is connected to the limiting side surface 221 and is inclined toward the direction away from the closed end 120 and toward the outer wall surface of the motor sleeve 100.

[0056] Optionally, the limiting side surface 221 can abut against the end surface of the motor body 310 to form a stop fit, so that when the motor body 310 is located in the installation space, the movement of the motor body 310 in the axial direction thereof can be limited, thereby preventing the motor 300 from escaping from the installation space and ensuring the stability of the installation of the motor 300.

[0057] Optionally, the installation guide surface 222 is connected to the limiting side surface 221 and extends in parallel in a direction away from the closed end 120. By setting the installation guide surface 222 as a side surface connected to the limiting side surface 221 extending toward the axis of the motor sleeve 100 and inclined toward the closed end 120, the function of guiding installation can be achieved when installing the motor 300. The motor body 310 can move toward the closed end 120 along the inclined installation guide surface 220, thereby facilitating the motor 300 to enter the installation space, saving installation time and improving installation efficiency.

[0058] Furthermore, when the motor 300 is installed in the installation space, due to the setting of the limiting side surface 221, the motor 300 is not easy to be removed, which can further ensure the stability of the motor installation.

[0059] Optionally, in order to reduce the noise generated when the motor is running, a shock-absorbing gasket is provided between the motor body 310 and the closed end 120 , and a shock-absorbing gasket is also provided between the motor body 310 and the limiting portion 200 .

[0060] In some embodiments, in combination Figures 2 to 4 As shown, the motor assembly for the through-the-wall fresh air fan further includes a plurality of limiting ribs 400. The plurality of limiting ribs 400 are disposed on the inner side wall of the motor sleeve 100. The limiting ribs 400 extend along the axial direction of the motor sleeve 100 and are arranged at intervals along the circumferential direction of the motor sleeve 100. The plurality of limiting ribs 400 abut against and contact the side wall surface of the motor body 310 to limit the rotation of the motor body 310 in the circumferential direction of the motor sleeve 100.

[0061] Optionally, by providing a plurality of limiting ribs 400, the motor body 310 can be limited from rotating in the circumferential direction of the motor sleeve 100 when the motor 300 is installed in the installation space. At this time, the limiting ribs 400 are all in contact with the side wall surface of the motor body 310, so that an interference fit is formed between the two to further clamp the motor body 310, thereby ensuring that the motor body will not rotate in the circumferential direction of the motor sleeve 100, and realizing stable fixation of the motor 300. Such an arrangement has a simple structure, is easy to manufacture and install, and is conducive to improving installation efficiency.

[0062] Optionally, a limiting rib 400 is provided between two adjacent limiting portions 200 .

[0063] In some embodiments, in combination Figures 1 to 4 As shown, the motor assembly for the through-the-wall fresh air fan further includes a support arm 500. A plurality of support arms 500 extend radially along the motor sleeve 100 and are arranged at intervals along the circumference of the motor sleeve 100 on the outer side wall of the motor sleeve 100, and the support arms 500 are used to support the motor sleeve 100.

[0064] Optionally, a plurality of support arms 500 form a support base for the motor sleeve 100, and are used to be connected to the position where the motor assembly is to be installed, thereby realizing the installation of the motor assembly for the through-the-wall fresh air fan.

[0065] Optionally, the motor assembly for the through-the-wall fresh air fan is arranged in the case of the through-the-wall fresh air fan, and is located in the air duct. In this arrangement, the airflow can flow through the gap between adjacent support arms 500, thereby ensuring the circulation of the fresh air flow.

[0066] Optionally, multiple support arms 500 are evenly spaced along the circumference of the motor sleeve 100 to make the force on the motor sleeve 100 uniform, improve the service life of the motor sleeve 100, and further improve the safety and service life of the motor assembly used for the through-the-wall fresh air fan. Optionally, at least three support arms 500 are provided. On the one hand, the support structure formed by the three support arms 500 is relatively stable. On the other hand, compared with the arrangement of more support arms 500, such an arrangement can reduce wind resistance and reduce the noise generated by the circulation of fresh air.

[0067] In some embodiments, in combination Figures 1 to 6 As shown, the motor assembly for the through-the-wall fresh air blower also includes a motor end cover 600. The motor end cover 600 is constructed such that the end cover profile can at least cover the open end 110. The motor end cover 600 is detachably arranged at the open end 110 to close the installation space in the motor sleeve 110.

[0068] By setting the motor end cover 600, the motor can be further confined within the installation space. On the one hand, it can prevent the motor 300 from escaping from the installation space, and on the other hand, it can protect the motor 300 and prevent foreign matter from entering the installation space.

[0069] In some embodiments, in combination Figure 5 , Figure 6 As shown, the motor assembly for the through-the-wall fresh air fan further includes a clamping portion 700. Multiple clamping portions 700 and multiple support arms 500 are arranged on the periphery of the motor end cover 600 in a one-to-one correspondence, and each clamping portion 700 is clamped with a corresponding support arm 500.

[0070] Optionally, the motor end cover 600 can be quickly installed by setting the clamping portion 700. The motor end cover 600 protects the motor by being detachably connected to the support arm 500, which can reduce the structural complexity of the motor sleeve 100, and there is no need to set a component that matches the clamping portion 700 on the motor sleeve 100.

[0071] Optionally, the clamping portion 700 includes two buckles 730 disposed opposite to each other, and a clamping slot is provided on the support arm 500, the clamping slot has two oppositely disposed side walls, and the two buckles 730 are respectively abutted against the corresponding side walls to achieve the clamping connection between the support arm 500 and the motor end cover 600. The two oppositely disposed side walls of the clamping slot are side walls extending along the radial direction of the motor sleeve 100.

[0072] Optionally, combined Figure 2 , Figure 3 As shown, a first support arm 510 among the plurality of support arms 500 is provided with a wire groove 511 , which extends along the radial direction of the motor sleeve 100 and is connected to the installation space for arranging motor wires connected to the motor body 310 .

[0073] Optionally, the plurality of support arms 500 include a first support arm 510 and a second support arm 520 , wherein the second support arm 520 only performs a supporting function, and the first support arm 510 also performs a guiding function for the motor wires.

[0074] Optionally, the clamping portion 700 includes a first clamping portion 710 and a second clamping portion 720. The first clamping portion 710 is clamped with the first support arm 510, and the second clamping portion 720 is clamped with the second support arm 520.

[0075] The motor wires can be protected by placing them in the wire groove 511. The motor wires extend along the wire groove 511 into the installation space and are connected to the motor body 310, thereby avoiding the mess or entanglement of the motor wires, which is beneficial to improving the safety of the operation of the motor 300.

[0076] Optionally, the first support arm 510 is disposed between the two limiting portions 200 and does not cross or overlap with the limiting portions 200 to avoid the limiting portions 200 affecting the arrangement of the motor wires and to avoid entanglement between the limiting portions 200 and the motor wires, thereby improving the safety of the motor wires.

[0077] In some embodiments, Figure 1 , Figure 2 as well as Figure 5 , Figure 6As shown, the motor assembly for the through-the-wall fresh air fan also includes a wire slot cover plate 610. The wire slot cover plate 610 is fixedly arranged on the first clamping portion 710 corresponding to the first support arm 510, extends along the radial direction of the motor sleeve 100, and is detachably connected to the first support arm 510. The wire slot cover plate 610 is used to cover the wire slot 511.

[0078] Since the motor wires are generally bendable and very easy to be damaged, the motor wires need to be protected. A wire slot cover plate 610 is provided on the first clamping portion 710 corresponding to the first support arm 510, and the wire slot cover plate 610 extends along the radial direction of the motor sleeve 100 to cover the wire slot 511, thereby isolating the motor wires from the external environment.

[0079] Optionally, a first clamping portion 710 having two clips 730 is also provided on the wire slot cover 610. The two clips 730 are arranged back to back and can abut against the side walls of the wire slot 511 extending radially along the motor sleeve 100, thereby realizing a detachable connection between the wire slot cover 610 and the first support arm 510, so as to facilitate the later arrangement or replacement and maintenance of the motor wires.

[0080] Combination Figure 7 , Figure 8 As shown, an embodiment of the present disclosure provides a through-the-wall fresh air fan, including an air duct 10, a motor assembly for the through-the-wall fresh air fan as described above, and a fan 20.

[0081] The air duct 10 includes an indoor air outlet 11 and an outdoor air outlet 12. The interior of the air duct 10 defines an air duct connecting the indoor air outlet 11 and the outdoor air outlet 12. As described above, the motor assembly for the through-the-wall fresh air fan is arranged in the air duct. The fan 20 is arranged in the air duct, close to the closed end 120, and the fan 20 is drivingly connected to the output shaft 320 of the motor body 310. The fan 20 rotates under the drive of the output shaft 320 to drive the outdoor air flow from the outdoor air outlet 12 through the air duct to the indoor air outlet 11.

[0082] Optionally, the air duct 10 includes an indoor air outlet 11 and an outdoor air outlet 12 arranged relatively to each other, and an air duct is defined inside the air duct, which can connect the indoor air outlet 11 and the outdoor air outlet 12. In this way, the outdoor fresh air flow can flow into the air duct through the outdoor air outlet 12, flow to the indoor air outlet 11 through the air duct, and then deliver fresh air to the room through the indoor air outlet 11, so as to achieve the purpose of adjusting the indoor air quality and improve the comfort of users.

[0083] Optionally, the air duct 10 is constructed in a circular cylindrical shape, which has a simple structure, is easy to process, saves space, and can avoid dead corners in the air duct.

[0084] Optionally, the support arm 500 is connected to the inner side wall of the air duct 10 to achieve the fixing and installation of the motor assembly for the through-the-wall fresh air blower. Optionally, the support arm 500 is fixedly connected to the inner side wall of the air duct 10. Preferably, the two are welded. In this way, the stability and safety of the motor assembly for the through-the-wall fresh air blower can be improved.

[0085] Optionally, the motor sleeve 100 is coaxially arranged with the wind cylinder 10 .

[0086] The through-the-wall fresh air fan provided by the embodiment of the present disclosure includes a motor assembly for the through-the-wall fresh air fan. The motor assembly for the through-the-wall fresh air fan includes a motor sleeve, a limit portion and a motor. The motor sleeve, which defines an installation space internally, has an open end and a closed end that are relatively arranged, and the motor can enter the installation space through the open end. In the case where the motor body is arranged in the installation space, by providing a limit portion at the open end, the motor body can be clamped between the limit portion and the closed end, limiting the axial displacement of the motor body in the motor sleeve, thereby preventing the motor from escaping from the installation space, and then achieving stable installation of the motor. In this way, the structure is simple, the motor can be installed quickly, and the installation efficiency is improved.

[0087] Optionally, the through-the-wall fresh air fan further includes a ring sleeve 30, which is sleeved on the outer periphery of the air duct 10. The distance between the ring sleeve 30 and the indoor air outlet 11 is smaller than the distance between the ring sleeve 30 and the outdoor air outlet 12.

[0088] The ring sleeve 30 includes a sleeve plate 31 and a reinforcing rib 32. The sleeve plate 31 is annularly sleeved on the outer wall of the air duct 10, and the sleeve plate 31 is provided with one or more through holes, which are used to be installed on the indoor wall in cooperation with screws. In this way, after the through-the-wall fresh air fan passes through the wall, it can be fixed to the indoor wall through the ring sleeve 30, thereby improving the stability of the through-the-wall fresh air fan. The reinforcing rib can improve the strength of the sleeve plate, prevent the sleeve plate from deforming relative to the indoor wall, and improve stability.

[0089] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A motor assembly for a through-the-wall fresh air fan, characterized in that: include: A motor sleeve having an installation space defined therein, wherein the motor sleeve comprises an open end and a closed end arranged opposite to each other; A plurality of limit portions are arranged at intervals along the circumference of the motor sleeve at the open end; The motor is arranged in the installation space and comprises a motor body coaxially arranged with the motor sleeve. The motor body can be clamped between the limiting part and the closed end.

2. The motor assembly according to claim 1, characterized in that: The limiting part includes: The connecting piece comprises a free end and a fixed end, wherein the fixed end is fixedly arranged at the open end; The limiting hook is arranged at the free end and extends toward the installation space. The limiting hook is used to limit the motor body from escaping from the installation space along the axial direction thereof.

3. The motor assembly according to claim 2, characterized in that: The limit hook includes: A limiting side surface extends along the radial direction of the motor sleeve, and the limiting side surface can abut against and contact with the end surface of the motor body to form a stop fit; The guide surface is installed, connected to the limiting side surface, and is inclined toward the direction away from the closed end and toward the outer wall surface of the motor sleeve.

4. The motor assembly according to claim 1, characterized in that: Also includes: A plurality of limiting ribs are arranged on the inner side wall of the motor sleeve, the limiting ribs extend along the axial direction of the motor sleeve, and are arranged at intervals along the circumferential direction of the motor sleeve. The plurality of limiting ribs abut against the side wall surface of the motor body to limit the rotation of the motor body in the circumferential direction of the motor sleeve.

5. The motor assembly according to any one of claims 1 to 4, characterized in that: Also includes: A plurality of support arms extend in the radial direction of the motor sleeve and are arranged at intervals on the outer side wall of the motor sleeve along the circumferential direction of the motor sleeve. The support arms are used to support the motor sleeve.

6. The motor assembly according to claim 5, characterized in that: Also includes: The motor end cover is constructed so that the end cover profile can at least cover the open end. The motor end cover is detachably arranged at the open end to close the installation space in the motor sleeve.

7. The motor assembly according to claim 6, characterized in that Also includes: A plurality of clamping parts are arranged on the periphery of the motor end cover in a one-to-one correspondence with the plurality of support arms, and each clamping part is clamped with the corresponding support arm.

8. The motor assembly according to claim 7, characterized in that A wire groove is provided on the first support arm among the multiple support arms. The wire groove extends along the radial direction of the motor sleeve and is connected to the installation space for arranging the motor wire connected to the motor body.

9. The motor assembly according to claim 8, characterized in that Also includes: The wire slot cover is fixedly arranged on the first clamping portion corresponding to the first support arm, extends along the radial direction of the motor sleeve, and is detachably connected to the first support arm. The wire slot cover is used to cover the wire slot.

10. A through-the-wall fresh air fan, characterized in that: include: The air duct includes an indoor air outlet and an outdoor air outlet, and the interior of the air duct defines an air duct connecting the indoor air outlet and the outdoor air outlet; The motor assembly for a through-the-wall fresh air fan according to any one of claims 1 to 9 is arranged in an air duct; The fan is arranged in the air duct and close to the closed end. The fan is driven and connected to the output shaft of the motor body. The fan rotates under the drive of the output shaft to drive the outdoor air flow from the outdoor air outlet through the air duct to the indoor air outlet.

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