CN217503946U

CN217503946U - Air duct switching device

Info

Publication number: CN217503946U
Application number: CN202221481643.9U
Authority: CN
Inventors: 黄友涛; 夏培均; 敖志超
Original assignee: Sichuan Changhong Air Conditioner Co Ltd
Current assignee: Sichuan Changhong Air Conditioner Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-27
Anticipated expiration: 2032-06-14

Abstract

The utility model relates to a gas purification and ventilation equipment accessory field specifically are wind channel auto-change over device. The utility model discloses a casing, forced draught blower, wind channel switch structure, wind channel. The air channel switching piece comprises a cylindrical main body, a cavity is arranged in the main body, a notch is formed in the outer peripheral surface of the main body, the cavity can be communicated with the outside, the notch is not formed in the outer peripheral surface of the main body and is a baffle, the air channel switching piece is in running fit with the air channel, and the air channel switching piece rotates to different positions in the air channel matching cavity. The air channel switching piece has a cylindrical main body, the required driving force is small, the number of adopted driving pieces is reduced, and meanwhile, the matching of excessive parts is avoided, and the failure rate is improved; in addition, wind channel switching piece is normal running fit with wind channel cooperation chamber, and wind channel switching piece terminal surface and wind channel wall contact require lowly, reduce because the cooperation is inaccurate, the noise that spare part is not hard up appears.

Description

Air duct switching device

Technical Field

The utility model relates to a gas purification and ventilation equipment accessory field specifically are wind channel auto-change over device.

Background

At present, products with outdoor fresh air introduced can only realize a certain air supply effect on one product, and the air supply form is single. Some products have designed many wind gaps on the machine, can realize the transform of wind path through the inside many places air door of outside or wind path mode that opens and shuts, but the moving part of this kind of mode is more, and the motor that drives the motion of different positions air door is also more relatively, if a certain air door or motor appear unusually, all can not effectual realization transform of wind path, lead to the unable normal function that realizes the transform air-out route of complete machine new trend function. In addition, the requirement on the sealing effect of each air door is high when the air path is switched, and as long as one air door is poorly sealed, the use feeling of the fresh air function of the whole machine is also influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a wind channel auto-change over device that simple structure, fault rate are low is provided.

The utility model solves the problems that the adopted technical scheme is that: the air channel switching piece comprises a cylindrical main body, a cavity is arranged in the main body, a notch is formed in the outer peripheral surface of the main body, so that the cavity can be communicated with the outside, the notch is not formed in the outer peripheral surface of the main body and is used as a baffle, and a rotating shaft is arranged in the center of the end surface of the main body; the rotating shaft and the air duct form a rotating fit, so that the air duct switching piece is driven by the driving piece to rotate to different positions in the air duct to communicate different air duct passages.

Further, the method comprises the following steps: the air channel comprises an air channel switching piece matching section and other air channel sections; the air channel switching piece matching section is provided with two arc-shaped matching cavities on the side wall of the air channel, and the two arc-shaped matching cavities form a circular matching cavity which can be rotated by the air channel switching piece; one of the arc matching cavities is provided with an air inlet; the air duct is provided with a left air duct on the left side of the circular matching cavity, and a right air duct on the right side of the circular matching cavity.

Further, the method comprises the following steps: the matching section of the air channel switching piece further comprises a bearing bush, the bearing bush is positioned outside the circle center of the end face of the circular matching cavity, and the circular matching cavity is in running fit with the rotating shaft of the air channel switching piece through the bearing bush.

Further, the method comprises the following steps: when the baffle is in the working position, the baffle can be matched with a matching port of an air duct to be sealed, so that the matching port is in a sealed state.

Further, the method comprises the following steps: the air duct switching device comprises four working positions, when in the first working position, the baffle plate seals the right air duct, and the air inlet is communicated with the left air duct; when the air inlet is in the first working position, the baffle plate closes the left air duct, and the air inlet is communicated with the right air duct; when the air inlet is at the third working position, the air inlet is simultaneously communicated with the left air duct and the right air duct; and when the fourth working position is adopted, the air inlet is sealed by the baffle plate, and the air channel is closed.

Further, the method comprises the following steps: and a connecting rod is added on the inner side of the cut arc.

Further, the method comprises the following steps: the arc length of the projection of the notch on the end face of the air channel switching piece is 75% of the circumference of the end face, two connecting rods are added into the notch, and the connecting rods do not shield the air channel at any working position.

Further, the method comprises the following steps: the air duct comprises an air duct upper structural part and an air duct lower structural part, the bearing bush is positioned on the air duct upper structural part, and the arc-shaped matching cavity without the air inlet is positioned on the air duct side wall of the air duct upper structural part; the arc-shaped matching cavity provided with the air inlet is positioned on the side wall of the air channel lower structural member, the air channel lower structural member also comprises an arc-shaped notch and an arc-shaped structure, and the arc-shaped structure is formed by opening the rest part of the air inlet in the arc-shaped matching cavity; the arc-shaped notch is matched with the bearing bush, so that the shaft hole in the bearing bush is communicated into the air duct after the air duct is assembled.

Further, the method comprises the following steps: the air duct switching device comprises a shell for fixing parts of all parts.

Further, the method comprises the following steps: the air channel switching device further comprises a blower, the blower comprises a shell and an air outlet, the blower is fixed on the shell, and the air outlet is connected with the air inlet.

The beneficial effects of the utility model are that: the switching of the air supply channel is realized through the rotating part in a single specific form, the number of moving parts for switching the air channel and motors for driving the moving parts is small, the cost is low, and the use reliability is high; when the left air duct and the right air duct are communicated with the air inlet and the air ducts are closed, the air ducts which are not used can be completely closed, and the abnormal problem caused by the random flow of air inside the air ducts is avoided; the switching of the air supply channel is realized through the rotating part with a single specific form, the number of gaps needing to be matched with higher requirements is small, and the risk of abnormal noise caused by the matching gap is reduced; the air duct switching function that the left air duct, the right air duct, the left air duct and the right air duct are communicated with the air inlet and the air duct is closed is realized on the same product.

Drawings

Fig. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic view of the centrifuge of the present invention;

FIG. 3 is a cross-sectional view of the lower structural member of the air duct of the present invention;

FIG. 4 is a side view of the shaft of the upper structural member of the air duct of the present invention;

FIG. 5 is a sectional view of the upper structural member of the air duct of the present invention;

fig. 6 is a schematic view of the air channel switching member of the present invention;

fig. 7 is a cross-sectional view of the air channel switching member of the present invention;

FIG. 8 is a schematic view of a first working position according to a preferred embodiment of the present invention;

FIG. 9 is a schematic diagram of a second working position according to the preferred embodiment of the present invention;

FIG. 10 is a schematic view of a third working position according to the preferred embodiment of the present invention;

FIG. 11 is a fourth exemplary embodiment of a working position of the present invention;

description of reference numerals: 5-a shell; 6-a blower; 7-air duct lower structural member; 8-an air duct upper structural member; 9-air duct switching piece, 10-motor; 61-air outlet; 71-an air inlet; 72-arc notch; 73-arc structure; 81-arc matching cavity; 82-bearing bush; 91-a rotating shaft; 92-incision; 93-baffle.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. Here, the description of the embodiments is provided to help understand the present invention, but the present invention is not limited thereto.

As shown in fig. 1, 6, and 7, the air duct switching structure of the air duct switching device includes an air duct switching member 9 and a driving member 10, the air duct switching member 9 includes a cylindrical main body, a cavity is disposed in the main body, a notch 92 is disposed on an outer peripheral surface of the main body, so that the cavity can pass through the outside, a portion of the outer peripheral surface of the main body, where the notch 92 is not disposed, is a baffle 93, and a rotating shaft 91 is disposed at a center of an end surface of the main body; the rotating shaft 91 is in rotating fit with the air duct, so that the air duct switching piece 9 is driven by the driving piece 10 to rotate to different positions in the air duct to communicate with different air duct passages.

The utility model discloses a wind channel switching piece 9 compares with the switching piece of prior art, and the wind channel switching piece of prior art all installs in air outlet department for plectrum and current wind channel switching piece, cooperates driving motor rotatory with the drive plectrum respectively at the plectrum both ends, realizes the wind channel and switches the function, the utility model discloses a wind channel switching piece 9 is located inside the wind channel, reduces because the cooperation is inaccurate, the noise that spare part is not hard up to appear, and the required consumption of cylindric wind channel switching piece 9 is lower in addition, required driving piece still less, avoids the cooperation of too many parts to improve the fault rate simultaneously.

Further, when the baffle 93 is in the working position, the baffle can be matched with a matching port of the air duct to be sealed, so that the matching port is in a sealed state, and a connecting rod can be added into a notch of the air duct switching piece 9 to enhance the stability of the air duct switching piece.

Further, the arc length of the projection of the notch 92 on the end face of the air channel switching piece 9 is 75% of the circumference of the end face, two connecting rods are added into the notch 92, and the connecting rods do not shield the air channel at any working position; make the closed wind channel mouth that baffle 93 can be better and the connecting rod all do not shelter from the wind channel at any work position, reach the highest to the rate of utilization of baffle 93 simultaneously, reduce the weight of wind channel switching piece baffle, make the focus of wind channel switching piece can keep on the axis of cylinder, can more smoothly rotate in circular cooperation chamber.

As shown in fig. 1 and 3-5, the air duct of the air duct switching device includes an air duct switching piece matching section and other air duct segments, the air duct switching piece matching section is provided with two arc matching cavities on the side wall of the air duct, the two arc matching cavities form a circular matching cavity in which the air duct switching piece 9 can rotate, one of the arc matching cavities is provided with an air inlet 71, the air duct is provided with a left air duct on the left side of the circular matching cavity, and a right air duct on the right side of the circular matching cavity; its advantage that matches the chamber at two arcs that the cooperation end in wind channel set up lies in: 1. an air duct matching cavity is prevented from being directly formed in the air duct, and the manufacturing difficulty of the air duct assembly is reduced; 2. the structure of the air channel is optimized, the material consumption is reduced, and the cost is reduced; the left air channel and the right air channel are arranged at positions which are convenient for driving the motor to write a driving program, so that the air channel switching piece does not need an excessively complex driving program, the switching control of the air channel switching piece is facilitated, and the phenomenon that the air channel switching piece is inaccurate in rotating and positioning is avoided.

In the scheme, the different air passages arranged in the air passage are not limited to two or three, the function which can be realized by adjusting the baffle of the air passage switching piece is not only to close one air passage, but also to realize the combination of various air passages by using the air passage switching piece in the air passages of a plurality of air passage air passages, and the embodiment is only taken as the best scheme for implementing the assumed function.

Further, the matching section of the air duct switching piece further comprises a bearing bush 82, the bearing bush 82 is located outside the center of the circle of the end face of the circular matching cavity, and the circular matching cavity is in running fit with the rotating shaft 91 of the air duct switching piece 9 through the bearing bush 82. The bearing bush is used for supporting the rotating shaft, so that the friction force generated when the rotating shaft rotates is reduced, and the rotating shaft can rotate better.

As shown in fig. 3-5, the air duct upper structural member 8 and the air duct lower structural member 7 of the air duct switching device are located at the air duct upper structural member 8, and the arc-shaped matching cavity without the air inlet 71 is located at the air duct side wall of the air duct upper structural member 8; the arc-shaped matching cavity provided with the air inlet 71 is positioned on the air duct side wall of the air duct lower structural member 7, the air duct lower structural member further comprises an arc-shaped notch 72 and an arc-shaped structure 73, and the arc-shaped structure 73 is the rest part of the arc-shaped matching cavity provided with the air inlet 71; the arc-shaped notch 72 is matched with the bearing bush 82, so that the shaft hole in the bearing bush 82 is communicated into the air duct after the air duct is assembled. The wind channel is formed by combining a wind channel lower structural part 7 and a wind channel upper structural part 8, the wind channel switching part 9 can be installed in the wind channel before the wind channel is installed, the installation convenience is better, in addition, the wind channel is only matched with two end faces of the wind channel, and the position matching is not needed, so the reliability of the wind channel switching device is better.

As shown in fig. 1 and 2, the blower of the air duct switching device is mounted on the casing, the air inlet of the air duct is connected with the air outlet of the blower, and the blower directly blows air into the air duct; the air supply channel to the air duct is simple, other structural parts are not needed, and the failure rate is reduced.

Furthermore, the preferred ion forced draught blower of forced draught blower, the ion forced draught blower is small, light in weight, the installation of being convenient for, application and different operational environment that can be better, drive arrangement is preferred step motor, and step motor has fine data control nature, can control the rotation of wind channel switching piece in the wind channel together with control program, switches the accurate rotation of wind channel to the work position.

The air duct switching device of the embodiment includes a plurality of working states:

in the working position of fig. 8, the baffle 93 of the air duct switching member 9 is rotated to the right side by the stepping motor 10, at this time, the right air duct is closed by the baffle 93, and the left air duct is communicated with the air inlet 71 to form an air duct passage.

In the working position of fig. 9, the baffle 93 of the air duct switching member 9 is rotated to the left side by the stepping motor 10, at this time, the left air duct is closed by the baffle 93, and the right air duct is communicated with the air inlet 71 to form an air duct passage.

In the working position of fig. 10, the baffle 93 of the air channel switching member 9 is rotated to the upper side by the stepping motor 10, at this time, the baffle 93 does not seal any air channel, and both the left and right air channels are communicated with the air inlet 71 to form an air channel passage.

In the working position of fig. 11, the baffle 93 of the air channel switching member 9 is rotated to the lower side by the stepping motor 10, at this time, the air inlet is closed by the baffle 93, the left and right air channels are both disconnected from the air inlet 71, and all the air channels are closed.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "counterclockwise", etc. indicate orientations and 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 equipment or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The air channel switching device comprises an air channel and an air channel switching structure matched with the air channel;

the method is characterized in that: the air channel switching structure comprises an air channel switching piece (9) and a driving piece (10), the air channel switching piece (9) comprises a cylindrical main body, a cavity is arranged in the main body, a notch (92) is formed in the outer peripheral surface of the main body, so that the cavity can be communicated with the outside, the part, without the notch (92), of the outer peripheral surface of the main body is a baffle (93), and a rotating shaft (91) is arranged in the center of the end surface of the main body; the rotating shaft (91) is in running fit with the air duct, so that the air duct switching piece (9) rotates to different positions in the air duct under the driving of the driving piece (10) to communicate different air duct passages.

2. The air duct switching device according to claim 1, wherein: the air channel comprises an air channel switching piece matching section and other air channel sections, the air channel switching piece matching section is provided with two arc-shaped matching cavities on the side wall of the air channel, the two arc-shaped matching cavities form a circular matching cavity in which the air channel switching piece (9) can rotate, and one of the arc-shaped matching cavities is provided with an air inlet (71); the air duct is provided with a left air duct on the left side of the circular matching cavity, and a right air duct on the right side of the circular matching cavity.

3. The air duct switching device according to claim 2, wherein: the air channel switching piece matching section further comprises a bearing bush (82), the bearing bush (82) is located on the outer side of the circle center of the end face of the circular matching cavity, and the circular matching cavity is in running fit with a rotating shaft (91) of the air channel switching piece (9) through the bearing bush (82).

4. The air duct switching device according to claim 3, wherein: when the baffle (93) is in a working position, the baffle can be matched with a matching opening of an air duct to be sealed, so that the matching opening is in a sealed state.

5. The air duct switching device according to claim 3, wherein: the air channel switching device comprises four working positions, when in the first working position, the baffle (93) seals the right air channel, and the air inlet is communicated with the left air channel; when the air conditioner is at the second working position, the baffle (93) seals the left air duct, and the air inlet is communicated with the right air duct; when the air inlet is at the third working position, the air inlet is simultaneously communicated with the left air duct and the right air duct; and when the fourth working position is reached, the baffle (93) closes the air inlet, and the air channel is closed.

6. The air duct switching device according to claim 3, wherein: the connecting rod is added into the notch (92).

7. The air duct switching device according to claim 5, wherein: the arc length of the projection of the notch on the end face of the air channel switching piece (9) is 75% of the circumference of the end face, two connecting rods are added into the notch (92), and the connecting rods do not shield the air channel at any working position.

8. The air duct switching device according to any one of claims 3 to 7, wherein: the air duct comprises an air duct upper structural part (8) and an air duct lower structural part (7), the bearing bush (82) is positioned on the air duct upper structural part (8), and the arc-shaped matching cavity without the air inlet (71) is positioned on the air duct side wall of the air duct upper structural part (8); the arc-shaped matching cavity provided with the air inlet (71) is positioned on the air duct side wall of the air duct lower structural part (7), the air duct lower structural part further comprises an arc-shaped notch (72) and an arc-shaped structure (73), and the arc-shaped structure (73) is the arc-shaped matching cavity provided with the rest part of the air inlet (71); the arc-shaped notch (72) is matched with the bearing bush (82), so that the shaft hole in the bearing bush (82) is communicated into the air duct after the air duct is assembled.

9. The air duct switching device according to claim 8, wherein: the air conditioner also comprises an air feeder (6) and a shell (5), wherein the air feeder (6) comprises a shell and an air outlet (61); the air feeder (6) is fixed on the shell (5), and the air outlet (61) is connected with the air inlet (71).