CN209763438U - Air return assembly for air duct machine and air duct machine - Google Patents

Abstract

The utility model discloses a return air subassembly and tuber pipe machine for tuber pipe machine, the return air subassembly includes the return air frame, switch door and drive arrangement, the return air passageway is defined to the return air frame, the switch door is established in the air entrance of return air passageway, the switch door passes through drive arrangement and installs in the return air frame, and by drive arrangement drive switch air inlet, when the switch door is in the position of closing air inlet, the central plane of switch door is for predetermineeing the plane, the reciprocal translation of planar direction is predetermine along the perpendicular to drive arrangement drive switch door. According to the utility model discloses a return air subassembly for tuber pipe machine can fuse as an organic whole with interior decoration.

Description

Air return assembly for air duct machine and air duct machine

Technical Field

The utility model belongs to the technical field of the air conditioning technique and specifically relates to a return air subassembly and tuber pipe machine for tuber pipe machine is related to.

Background

In the correlation technique, the tuber pipe machine is generally installed in suspended ceiling, and suspended ceiling needs to set up the air inlet of ventilation hole in order to realize the tuber pipe machine, and ventilation hole department sets up the return air panel, for guaranteeing the normal return air of tuber pipe machine, the return air panel adopts grid formula panel usually to satisfy basic return air function. However, when the air return panel is installed, the interior decoration is obtrusive, and the higher and higher decoration requirements cannot be met; moreover, dust between the grid intervals is difficult to clean, so that the maintenance of the return air panel is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a return air subassembly for tuber pipe machine, the return air subassembly has promoted interior decoration's associative perception.

the utility model discloses still provide an tuber pipe machine of having above-mentioned return air subassembly.

According to the utility model discloses a return air subassembly for tuber pipe machine of first aspect embodiment, include: the air return frame defines an air return channel; the switch door is arranged at an air inlet of the return air channel; the air inlet is arranged on the air inlet, the switch door is closed at the position of the air inlet, the central plane of the switch door is a preset plane, and the drive device drives the switch door to move in a reciprocating mode in the direction perpendicular to the preset plane.

According to the utility model discloses a return air subassembly for tuber pipe machine, when guaranteeing the switch door and opening air inlet, under the prerequisite of the normal return air of return air passageway, can shelter from the destruction of return air subassembly to interior decoration when the switch door closes air inlet, promoted interior decoration's associative perception, made things convenient for the clearance of return air subassembly, maintained simultaneously, moreover, switch door motion is simple, with low costs, is convenient for realize.

According to some embodiments of the invention, the drive arrangement comprises: the gear rack mechanism comprises a gear condition and a gear piece, the gear condition is connected with the switch door, the gear condition is in sliding fit with the air return frame so as to make reciprocating translation relative to the air return frame along the direction vertical to the preset plane, and the gear piece is arranged on the air return frame and meshed with the gear piece; and the first motor is directly or indirectly connected with the gear piece to drive the gear piece to rotate, and the gear piece drives the rack piece to translate in the rotating process. Therefore, the driving device is simple in structure and convenient to realize.

According to the utility model discloses a some embodiments, have on the tooth condition along the direction of translation slot that the direction of translation of tooth condition extends, the direction cutting has on the return air frame, the direction cutting is inserted and is joined in marriage in the direction slot, so that the tooth condition is followed the translation of direction cutting to guarantee the stable translation of rack spare.

According to some embodiments of the invention, the drive arrangement comprises: the ball screw mechanism comprises a screw rod and a nut, the nut is arranged on the air return frame and matched with the screw rod, and the screw rod is connected with the switch door and can reciprocate relative to the air return frame; and the second motor is directly or indirectly connected with the nut to drive the nut to rotate, and the screw is driven to translate in the nut rotating process, so that the structure of the driving device is also simplified.

According to some embodiments of the utility model, have on the screw rod along the direction perforation that the translation direction of screw rod extends, the guide bar has on the return air frame, the guide bar wears to locate in the direction perforation, so that the screw rod is followed the guide bar translation to guarantee that the translation is stabilized to the screw rod.

According to the utility model discloses a some embodiments, the drive arrangement drive the switch door is at 0mm ~ h distance within range translation, and wherein, 5mm is less than or equal to h and is less than or equal to 20mm to guarantee the return air volume of return air subassembly, reduced the requirement to drive arrangement.

According to the utility model discloses a some embodiments the switch door is in and closes during the position of air inlet, the return air frame is in orthographic projection on the switch door falls completely in the switch door, so that the return air frame is totally by the switch door shelters from, has further promoted interior decoration's associative perception.

According to the utility model discloses a some embodiments, the switch door is the rectangle, the length both ends of switch door are equipped with respectively drive arrangement to guarantee that the motion of switch door is steady, reliable.

According to the utility model discloses a some embodiments, the width of switch door all is equipped with a plurality ofly every end drive arrangement to further guarantee the switch door steady movement.

According to the utility model discloses tuber pipe machine of second aspect embodiment, include according to the utility model discloses the return air subassembly that is used for tuber pipe machine of above-mentioned first aspect embodiment.

According to the utility model discloses tuber pipe machine through adopting foretell return air subassembly, has effectively promoted interior decoration's associative perception, has made things convenient for the maintenance of tuber pipe machine.

Additional aspects and advantages of the 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.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

Fig. 1 is a schematic view of a return air assembly according to an embodiment of the present invention, wherein the opening and closing door is in a position to open the air inlet;

fig. 2 is a schematic view of another angle of the return air assembly shown in fig. 1;

FIG. 3 is an enlarged view of portion A circled in FIG. 2;

Fig. 4 is a side view of the return air assembly shown in fig. 1;

Fig. 5 is a schematic view of the door movement of the return air assembly shown in fig. 1;

FIG. 6 is an enlarged view of portion B circled in FIG. 5;

FIG. 7 is a schematic view of the assembled structure of the rack and pinion mechanism and the return air frame shown in FIG. 6;

Fig. 8 is another schematic view of the return air assembly shown in fig. 1 with the switch door in a closed air inlet position;

FIG. 9 is a bottom view of the return air assembly shown in FIG. 8;

Fig. 10 is a front view of the return air assembly shown in fig. 8;

Fig. 11 is a top plan view of the return air assembly shown in fig. 8;

Fig. 12 is a schematic view of an assembly structure of a driving device of a return air assembly and a return air frame according to another embodiment of the present invention;

Fig. 13 is an installation schematic diagram of a ducted air conditioner according to an embodiment of the present invention.

Reference numerals:

an air duct machine 200, an air outlet 101,

An air return component 100, a preset plane 100a,

An air return frame 1, an air return channel 10, an air inlet 10a,

A guide cutting 11, a guide rod 12,

A switch door 2,

A driving device 3,

A gear rack mechanism 31, a first motor 32,

A rack member 311, a guide slot 311a, a gear member 312,

a ball screw mechanism 33, a second motor 34,

A screw 331, a guide through hole 331a, a nut 332,

Detection module 4, electronic control module 5, filter screen 6.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

a return air assembly 100 for a duct machine 200 according to an embodiment of the present invention is described below with reference to the drawings. The duct type air conditioner 200 is an air duct type air conditioner.

As shown in fig. 1, 3 and 6, a return air assembly 100 for a duct machine 200 according to an embodiment of the present invention includes a return air frame 1, a switch door 2 and a driving device 3.

The air return frame 1 defines an air return channel 10, the air return channel 10 is provided with an air inlet 10a, the switch door 2 is arranged at the air inlet 10a of the air return channel 10, the switch door 2 is arranged on the air return frame 1 through a driving device 3, and the switch door 2 is driven by the driving device 3 to switch the air inlet 10 a; when the opening and closing door 2 is in a position of closing the air inlet 10a, the central plane of the opening and closing door 2 is the preset plane 100a, and the driving device 3 drives the opening and closing door 2 to make reciprocating translation along the direction perpendicular to the preset plane 100 a.

The driving device 3 can be installed on the air return frame 1, and the driving device 3 is connected with the switch door 2, so that the switch door 2 can be indirectly installed on the air return frame 1 through the driving device 3. When the opening and closing door 2 is forwardly translated perpendicular to the preset plane 100a to open the air inlet 10a, the return air passage 10 may be communicated with the external environment through the air inlet 10 a; when the opening and closing door 2 is reversely translated perpendicular to the preset plane 100a to close the air inlet 10a, the opening and closing door 2 may block the air inlet 10 a. In the above description, "forward" and "reverse" are relative terms.

When the return air assembly 100 is used in the duct unit 200, the return air assembly 100 may be installed on a ceiling, a wall, or the like. When the air duct machine 200 operates, the driving device 3 can drive the switch door 2 to move horizontally to open the air inlet 10a, an inlet is formed between the switch door 2 and the air inlet 10a, air can flow into the return air channel 10 through the air inlet 10a and is finally blown out from the air outlet 101 of the air duct machine 200, and normal air outlet of the air duct machine 200 is achieved; when the ducted air conditioner 200 stops operating, the driving device 3 can drive the switch door 2 to move horizontally to close the air inlet 10a, at this time, the switch door 2 can shield the air inlet 10a, so as to prevent foreign matters such as dust from entering the air return channel 10 to affect the air return of the air return component 100, and compared with a grid type structure in the prior art, the air return component 100 in the application is convenient to clean and maintain, the switch door 2 can at least partially shield the damage of the return air assembly 100 to the indoor decoration, such as a ceiling or a wall, and the like, thereby being convenient for hiding the return air assembly 100 from the indoor decoration, avoiding the indoor decoration from generating a sharp feeling to damage the integrity of the indoor decoration, thereby make return air subassembly 100 and suspended ceiling or wall form a smooth whole, return air subassembly 100 fuses well with the interior decoration style as an organic whole, has promoted interior decoration's associative perception, and then can satisfy higher fitment and aesthetic requirement better.

in addition, since the driving device 3 drives the opening and closing door 2 to translate in the direction perpendicular to the predetermined plane 100a, the opening and closing door 2 translates for a short distance to achieve the opening of the air inlet 10a, so as to facilitate the rapid switching of the position of the opening and closing door 2.

It is understood that when the return air assembly 100 is applied to the duct unit 200, the air inlet 10a may be formed as an air inlet of the duct unit 200, or may be formed between the air inlet and the air outlet of the duct unit 200. The number of the opening and closing doors 2 can be one or more; for example, in the example of fig. 1 and 8, the number of the switching doors 2 is two.

According to the utility model discloses a return air subassembly for tuber pipe machine, switch door 2 through the air inlet 10a department at return air passageway 10 sets up reciprocal translation is with switch air inlet 10a, thereby when guaranteeing switch door 2 to open air inlet 10a, under the prerequisite of return air passageway 10 normal return air, switch door 2 can shelter from return air subassembly 100 to the destruction of interior decoration when closing air inlet 10a, the sense of wholeness of interior decoration has been promoted, the clearance of return air subassembly 100 has been made things convenient for simultaneously, and the maintenance, moreover, 2 motion modes of switch door are simple, and is with low costs, be convenient for realize.

In some optional embodiments of the present invention, as shown in fig. 4 and fig. 6, the driving device 3 includes a rack-and-pinion mechanism 31 and a first motor 32, the rack-and-pinion mechanism 31 includes a rack member 311 and a gear member 312, the gear member 312 is disposed on the air return frame 1 and the gear member 312 is engaged with the rack member 311, the rack member 311 is connected to the switch door 2, the rack member 311 is slidably fitted to the air return frame 1 to reciprocally translate along a direction perpendicular to the predetermined plane 100a with respect to the air return frame 1, the first motor 32 is directly or indirectly connected to the gear member 312 to drive the gear member 312 to rotate, and the gear member 312 drives the rack member 311 to translate to drive the switch door 2 to translate during the rotating process. Therefore, the driving device 3 is simple in structure and convenient to realize, and the stability of the translation of the opening and closing door 2 is ensured.

The first motor 32 may be directly connected to the gear member 312 to drive the gear member 312 to rotate, and at this time, the driving device 3 drives the gear member 312 to rotate in a direct driving manner by using the first motor 32; alternatively, the first motor 32 may be indirectly connected to the gear member 312 to drive the gear member 312 to rotate, and at this time, the driving device 3 may drive the gear member 312 to rotate by combining the first motor 32 with a transmission mechanism, where the transmission mechanism may be a gear transmission mechanism, a belt transmission mechanism, or the like.

it is understood that the connection mode between the rack member 311 and the opening/closing door 2 may be specifically set according to the practical application; for example, the rack member 311 and the opening/closing door 2 may be fixedly connected to each other, so that the rack member 311 and the opening/closing door 2 are kept relatively stationary, or the rack member 311 and the opening/closing door 2 may be pivotally connected to each other (as shown in fig. 6), and at this time, the rack member 311 may also drive the opening/closing door 2 to translate by appropriately setting the number and arrangement of the rack members 311.

for example, as shown in fig. 7, the rack member 311 has a guide slot 311a extending in the translational direction of the rack member 311, the return frame 1 has a guide slip 11, the guide slip 11 is inserted into the guide slot 3111a, and the guide slip 11 is slidable in the guide slot 311a relative to the guide slot 311a so that the rack member 311 is translated along the guide slip 11. From this, through the direction cutting 11 and the direction slot 311a that cooperate each other, be convenient for realize tooth condition 311 spacing, guarantee tooth condition 311's translation, can play the guide effect to the translation of rack spare 311 simultaneously, guarantee the stability of tooth condition 311 translation to switch door 2 motion has been guaranteed.

In the example of fig. 7, the guide slot 311a may penetrate at least one axial end of the rack member 311, and the guide slip 11 is inserted into the guide slot 311a from the axial end of the rack member 311, such that the rack member 311 is sleeved outside the guide slip 11, and thus the guide slot 311a has a simple structure and is convenient to process.

It is to be understood that the structure of the guide insertion groove 311a is not limited thereto; for example, the guide slot 311a may also extend through the outer peripheral wall of the rack member 311, and may also cooperate with the guide blade 11 to guide the movement of the rack member 311.

of course, the guide slot 311a may also be formed on the air return frame 1, the guide slip 11 may be disposed on the tooth condition 311, and the guide slip 11 is inserted into the guide slot 311a, which may also play a guiding role, so that the tooth condition 311 translates along the guide slot 311a, thereby ensuring the stability of the tooth condition 311 in the translation process.

In other optional embodiments of the present invention, as shown in fig. 12, the driving device 3 includes a ball screw mechanism 33 and a second motor 34, the ball screw mechanism 33 includes a screw rod 331 and a nut 332, the nut 332 is disposed on the return air frame 1 and the nut 332 cooperates with the screw rod 331, the screw rod 331 is connected to the switch door 2, the screw rod 331 cooperates with the return air frame 1 to slide back and forth along the direction perpendicular to the predetermined plane 100a with the relative return air frame 1, the second motor 34 is directly or indirectly connected to the nut 332 to drive the nut 332 to rotate, and the nut 332 drives the screw rod 331 to translate to drive the switch door 2 to translate during the rotation process. Therefore, the driving device 3 is simple in structure and convenient to realize, and the stability of the translation of the opening and closing door 2 is ensured.

The second motor 34 may be directly connected with the nut 332 to drive the nut 332 to rotate, and at this time, the driving device 3 drives the nut 332 to rotate in a manner of direct driving by the second motor 34; alternatively, the second motor 34 may be indirectly connected to the nut 332 to drive the nut 332 to rotate, and in this case, the driving device 3 may drive the nut 332 to rotate by combining the second motor 34 with a transmission mechanism, where the transmission mechanism may be a gear transmission mechanism, a belt transmission mechanism, or the like.

Of course, the present invention is not limited thereto. For example, the screw 331 is disposed on the air return frame 1, the screw 331 is engaged with the nut 332, the nut 332 is connected to the door 2, the nut 332 is slidably engaged with the air return frame 1 to reciprocally translate along a direction perpendicular to the predetermined plane 100a with respect to the air return frame 1, the second motor 34 is directly or indirectly connected to the screw 331 to drive the screw 331 to rotate, and the nut 332 is driven to translate to drive the door 2 to translate during the rotation of the screw 331.

As shown in fig. 12, the screw 331 has a guide through hole 331a extending in the translation direction of the screw 331, the return frame 1 has a guide rod 12, the guide rod 12 is inserted into the guide through hole 331a, and the guide rod 12 is slidable in the guide through hole 331a with respect to the guide through hole 331a, so that the screw 331 translates along the guide rod 12. Therefore, the guide rod 12 and the guide through hole 331a which are matched with each other are convenient for realizing the circumferential limit of the screw 331, and the translation of the screw 331 is ensured, so that the switch door 2 moves stably.

Wherein, the screw 331 can be sleeved outside the guide rod 331a, the guide through hole 331a is adapted to the guide rod 12, and the cross section of the guide rod 12 can be non-circular to limit the rotation of the screw 331; but is not limited thereto.

Alternatively, as shown in fig. 6 and 13, the driving device 3 drives the opened and closed door 2 to translate within a distance range of 0 mm-h (inclusive), specifically, the opened and closed door 2 may have a first position and a second position, and the opened and closed door 2 moves between the first position and the second position to open and close the air inlet 10 a; when the switch door 2 is at the first position, the switch door 2 closes the air inlet 10a, the distance of the driving device 3 driving the switch door 2 to translate is 0mm, when the switch door 2 is at the second position, the switch door 2 is at the limit position of opening the air inlet 10a, the distance of the driving device 3 driving the switch door 2 to translate is h, and h can be understood as the maximum translation distance of the switch door 2 along the direction perpendicular to the preset plane 100 a.

H satisfies 5mm and h is less than or equal to 20mm, so that a proper gap is formed between the switch door 2 and the air inlet 10a when the switch door 2 opens the air inlet 10a, the air quantity at the air inlet 10a is ensured, the influence of undersize reduction between the switch door 2 and the air inlet 10a on the return air quantity of the return air assembly 100 is avoided, and the phenomenon that the gap between the switch door 2 and the air inlet 10a is too large when the switch door 2 opens the air inlet 10a and the requirement on the driving device 3 is high is avoided, so that the occupied space of the driving device 3 is saved, the cost of the driving device 3 is reduced, and the return air assembly 100 has good practicability. Alternatively, h may be 5mm, or 8mm, or 10mm, or 16mm, or 20mm, etc.

The utility model discloses an in some embodiments, when switch door 2 is in the position of closing air inlet 10a, the orthographic projection of return air frame 1 on switch door 2 falls completely in switch door 2, so that return air frame 1 is sheltered from by switch door 2 completely, then when switch door 2 is in the position of closing air inlet 10a, the outward flange of the orthographic projection of return air frame 1 on switch door 2 is located the inboard of the outward flange of switch door 2, switch door 2 can shelter from return air frame 1 completely this moment, make switch door 2 effectively shelter from the destruction of return air subassembly 100 to the interior decoration global sense, the global sense of interior decoration has further been promoted.

It can be understood that when the switch door 2 is in the position for closing the air inlet 10a, the orthographic projection of the return air frame 1 on the switch door 2 can also be at least partially located outside the outer edge of the switch door 2, or the orthographic projection of the return air frame 1 on the switch door 2 falls on the outer edge of the switch door 2, which can also make the switch door 2 shield the return air assembly 100 from damaging the overall sense of interior decoration, and ensure the overall sense of interior decoration.

In some embodiments of the present invention, the switch door 2 is rectangular, and the two ends of the length of the switch door 2 are respectively provided with the driving device 3. For example, as shown in fig. 2 and 3, the air inlet 10a may be formed in a rectangular shape to match the shape of the opening/closing door 2, and the driving devices 3 at both ends of the length of the opening/closing door 2 may be operated synchronously to drive the opening/closing door 2 to translate, so as to ensure the stability of the translation of the opening/closing door 2, and make the movement of the opening/closing door 2 smooth and reliable.

Wherein, the driving device 3 at each end of the length of the switch door 2 can be one or more, and one or more driving devices 3 can be arranged at each end of the width of the switch door 2. For example, in the example of fig. 2-4, four driving devices 3 are provided, two driving devices 3 are provided at each end of the length of the opening and closing door 2, and two driving devices 3 are provided at each end of the width of the opening and closing door 2, so that the translational stability of the opening and closing door 2 is further ensured.

it will be appreciated that the switching door 2 may also be formed in other shapes, such as square, trapezoidal, etc. The number and arrangement of the driving devices 3 are not limited thereto; for example, when the opening/closing door 2 is formed in a rectangular shape, the driving device 3 may not be located at an end of the opening/closing door 2, one, three, or more than three driving devices 3 may be provided, and a plurality of driving devices 3 may be sequentially provided at intervals in a longitudinal direction of the opening/closing door 2.

According to the present invention, the duct machine 200 according to the second aspect of the present invention includes the return air assembly 100 for the duct machine 200 according to the first aspect of the present invention.

according to the utility model discloses tuber pipe machine 200, through adopting foretell return air subassembly 100, effectively promoted interior decoration's associative perception, made things convenient for tuber pipe machine 200's maintenance.

Other constructions and operations of the ducted air conditioner 200 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

the return air assembly 100 and the duct unit 200 for the duct unit 200 according to the embodiment of the present invention will be described in detail below in two specific embodiments with reference to the accompanying drawings. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

Example one

In the present embodiment, as shown in fig. 1, 3 and 11, the air return assembly 100 includes an air return frame 1, a switching door 2 and a driving device 3, a detection module 4, an electronic control module 5 and a filter screen 6.

The air return frame 1 is roughly formed into the cuboid structure, and the air return channel 10 is injectd to air return frame 1, and air return channel 10 has air inlet 10a, and detection module 4 and switch door 2 all establish in air inlet 10a department, and detection module 4 can be used for detecting indoor temperature, user's position etc. and automatically controlled module 5 installs in air return frame 1, and filter screen 6 establishes in order to filter the air current that flows in air return channel 10.

The number of the switch doors 2 is two, the two switch doors 2 are sequentially arranged along the front-back direction, and each switch door 2 is respectively formed into a rectangle; each switch door 2 comprises a door body and a side edge, wherein the side edge is arranged on the door body, and the side edge extends perpendicular to the door body towards the direction of the air return frame. Two driving devices 3 are respectively arranged at two ends of the length of each switch door 2, and the two driving devices 3 are respectively arranged at two ends of the width direction of the switch door 2.

The driving device 3 is mounted on the air return frame 1, each of the switch doors 2 is mounted on the air return frame 1 through the driving device 3, and the driving device 3 drives the switch doors 2 to perform reciprocating translation relative to the air return frame 1 along a direction perpendicular to the preset plane 100a so as to switch the air inlet 10 a. Wherein, when the opening and closing door 2 is in a position to close the air inlet 10a, the central plane of the opening and closing door 2 is the preset plane 100 a.

Specifically, as shown in fig. 4 and fig. 6, the driving device 3 includes a rack-and-pinion mechanism 31 and a first motor 32, the rack-and-pinion mechanism 31 includes a rack member 311 and a gear member 312, the gear member 312 is disposed on the air return frame 1, the gear member 312 is engaged with the rack member 311, the rack member 311 is connected to a side of the door 2, the rack member 311 is slidably fitted to the air return frame 1 to reciprocally translate along a direction perpendicular to the preset plane 100a with respect to the air return frame 1, the first motor 32 is directly or indirectly connected to the gear member 312 to drive the gear member 312 to rotate, the rack member 311 is driven to translate to drive the door 2 to translate during rotation of the gear member 312, and the driving device 3 drives the door 2 to translate within a distance range (including an end point value) of 0mm to h, h satisfies 5mm ≦ h ≦ 20 mm. Wherein the first motor 32 is a stepper motor.

According to the utility model discloses return air subassembly 100 has realized the normal return air of return air subassembly 100, and switch door 2 can shelter from return air subassembly 100 to interior decoration's destruction, has promoted interior decoration's whole aesthetic feeling, has made things convenient for clearance, the maintenance of return air subassembly 100 simultaneously.

as shown in fig. 13, the duct unit 200 includes the return air assembly 100, and the return air assembly 100 is the return air assembly 100 shown in fig. 1, wherein an air inlet 10a is formed as an air inlet of the duct unit 200, and a user can repair and maintain the duct unit 200 through the air inlet 10 a.

according to the utility model discloses tuber pipe machine 200, through adopting foretell return air subassembly 100, effectively promoted interior decoration's associative perception, made things convenient for tuber pipe machine 200's maintenance.

Example two

As shown in fig. 12, the present embodiment has substantially the same structure as the first embodiment, wherein the same reference numerals are used for the same components, except that: the structure of the driving device 3 is different.

specifically, as shown in fig. 12, the driving device 3 includes a ball screw mechanism 33 and a second motor 34, the ball screw mechanism 33 includes a screw 331 and a nut 332, the nut 332 is disposed on the return air frame 1, and the nut 332 is engaged with the screw 331, the screw 331 is connected to the switching door 2, the screw 331 is slidably engaged with the return air frame 1 to reciprocate in a direction perpendicular to the preset plane 100a relative to the return air frame 1, the second motor 34 is directly or indirectly connected to the nut 332 to drive the nut 332 to rotate, and the screw 331 is driven to translate to drive the switching door 2 to translate during rotation of the nut 332.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A return air assembly for a ducted air conditioner, comprising:

The air return frame defines an air return channel;

the switch door is arranged at an air inlet of the return air channel;

The air inlet is arranged on the air inlet, the switch door is closed at the position of the air inlet, the central plane of the switch door is a preset plane, and the drive device drives the switch door to move in a reciprocating mode in the direction perpendicular to the preset plane.

2. the return air assembly for a duct machine as set forth in claim 1, wherein said drive means includes:

The gear rack mechanism comprises a gear condition and a gear piece, the gear condition is connected with the switch door, the gear condition is in sliding fit with the air return frame so as to make reciprocating translation relative to the air return frame along the direction vertical to the preset plane, and the gear piece is arranged on the air return frame and meshed with the gear piece; and

The first motor is directly or indirectly connected with the gear piece to drive the gear piece to rotate, and the gear piece drives the rack piece to translate in the rotating process.

3. The return air assembly for a duct unit according to claim 2, wherein the rack member has a guide slot extending in a direction of translation of the rack member, and the return frame has a guide slip inserted into the guide slot so that the rack member translates along the guide slip.

4. The return air assembly for a duct machine as set forth in claim 1, wherein said drive means includes:

The ball screw mechanism comprises a screw rod and a nut, the nut is arranged on the air return frame and matched with the screw rod, and the screw rod is connected with the switch door and can reciprocate relative to the air return frame; and

And the second motor is directly or indirectly connected with the nut to drive the nut to rotate, and the screw is driven to translate in the nut rotating process.

5. The return air assembly for the duct unit according to claim 4, wherein the screw has a guide hole extending in a translational direction of the screw, and the return frame has a guide rod extending through the guide hole to allow the screw to translate along the guide rod.

6. the return air assembly for the ducted air conditioner according to any one of claims 1 to 5, wherein the driving device drives the opening and closing door to move in a range of 0mm to h, wherein h is greater than or equal to 5mm and less than or equal to 20 mm.

7. The return air assembly for a duct machine according to claim 1, wherein when the switch door is in a position closing the air inlet, an orthographic projection of the return frame on the switch door falls completely within the switch door, so that the return frame is completely hidden by the switch door.

8. The return air assembly for the duct unit as claimed in claim 1, wherein the opening and closing door is rectangular, and the driving means is provided at each of both ends of the length of the opening and closing door.

9. A return air assembly for a duct machine as defined in claim 8 wherein a plurality of said drives are provided at each end of the width of said switch door.

10. A ducted air conditioner including a return air assembly for a ducted air conditioner according to any one of claims 1 to 9.