CN211259081U

CN211259081U - Cross-flow fan and window type air conditioner

Info

Publication number: CN211259081U
Application number: CN201922499013.9U
Authority: CN
Inventors: 邢志钢; 刘雨; 雷志盛; 张康文; 申文军; 喻辉; 唐宇航
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-14
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a cross-flow fan and a window type air conditioner, wherein, the cross-flow fan comprises a motor and a cross-flow wind wheel, and the motor is provided with an output shaft; the cross-flow wind wheel comprises two opposite end covers and a plurality of shaft joints arranged between the two end covers and distributed along the axial direction of the cross-flow wind wheel, each shaft joint is provided with a plurality of blades arranged at intervals along the circumferential direction of the end cover, a shaft sleeve is convexly arranged on the inner wall surface of one end cover, and an output shaft is connected with the shaft sleeve through a fastening piece; and in the axial direction of the cross-flow wind wheel, the length of the shaft joint provided with the avoidance notch is smaller than the lengths of the other shaft joints. The utility model discloses cross-flow fan has reduced the coupling that is equipped with and keeps away a breach and has taken up the ratio on the length of whole cross-flow wind wheel when making things convenient for motor and cross-flow wind wheel installation to the effectual abnormal sound that produces at the operation in-process of cross-flow wind wheel that has reduced.

Description

Cross-flow fan and window type air conditioner

Technical Field

The utility model relates to an air conditioning technology field, in particular to cross-flow fan and window type air conditioner.

Background

The cross-flow wind wheel has the advantages of simple structure, small volume, stable generated airflow, high dynamic pressure coefficient and the like, and is widely applied to devices such as air conditioning equipment and the like which need low-pressure ventilation. An important problem in the use process of the cross-flow wind wheel is high working noise, so more and more optimization schemes are focused on the improvement of the cross-flow wind wheel.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a cross-flow fan, aim at solving the big technical problem of cross-flow wind wheel noise.

In order to achieve the above purpose, the cross flow fan provided by the utility model comprises a motor and a cross flow wind wheel;

the motor is provided with an output shaft;

the cross-flow wind wheel comprises two opposite end covers and a plurality of shaft joints which are arranged between the two end covers and are distributed along the axial direction of the cross-flow wind wheel, each shaft joint is provided with a plurality of blades which are arranged at intervals along the circumferential direction of the end cover, a shaft sleeve is convexly arranged on the inner wall surface of one end cover, and the output shaft is connected with the shaft sleeve through a fastening piece;

and the position of one shaft joint corresponding to the fastening piece is provided with a position avoiding notch for mounting the fastening piece, and the length of the shaft joint provided with the position avoiding notch is smaller than the lengths of the other shaft joints in the axial direction of the cross-flow wind wheel.

In one embodiment, the shaft joint provided with the clearance gap is positioned at the end part of the cross-flow wind wheel adjacent to the motor.

In one embodiment, the cross-flow wind wheel is provided with a first shaft joint and a second shaft joint, the first shaft joint is provided with the avoidance notch, and the length of the second shaft joint is greater than that of the other shaft joints in the axial direction of the cross-flow wind wheel;

in the axial direction of the cross-flow wind wheel, the length of the first shaft joint is greater than or equal to that of the shaft sleeve and is less than or equal to half of that of the second shaft joint.

In an embodiment, the blade includes a first blade, a second blade and a third blade which are adjacent in sequence, the clearance gap is formed between the first blade and the second blade, a distance between the first blade and the second blade is greater than a distance between the second blade and the third blade, and the distance between the first blade and the second blade is greater than a maximum outer diameter of the fastening member.

In an embodiment, the spacing between the first and second blades is twice the spacing between the second and third blades.

In an embodiment, two adjacent blades corresponding to the fastening member are respectively provided with a first gap and a second gap, and the clearance gap is formed between the first gap and the second gap.

In an embodiment, the clearance gap is formed on one blade corresponding to the fastening member.

In one embodiment, the blades on two adjacent shaft joints are arranged in a one-to-one correspondence manner; alternatively, the first and second electrodes may be,

the blades on the adjacent shaft joints are arranged in a staggered manner; alternatively, the first and second electrodes may be,

blades on part of the plurality of shaft joints are arranged in a one-to-one correspondence mode, and blades on the other shaft joints are arranged in a staggered mode.

The utility model also provides a window type air conditioner, including casing and cross-flow fan, the casing is equipped with air intake, air outlet and communicates the heat transfer wind channel of air intake and air outlet, the cross-flow fan is located in the heat transfer wind channel;

the cross-flow fan comprises a motor and a cross-flow wind wheel; the motor is provided with an output shaft;

In one embodiment, the casing is provided with a separation groove for a shielding piece positioned at a window of a wall body to extend into, the window type air conditioner further comprises a sealing piece, the sealing piece is movably arranged in the separation groove, and the sealing piece is suitable for being switched between a storage state and an operating state through movement; wherein the content of the first and second substances,

in the accommodated state, the seal is accommodated in the separation groove;

in the working state, the sealing element extends laterally from the separating groove and is suitable for being abutted by the shielding element and/or the inner wall of the window.

The utility model discloses the cross-flow fan keeps away a breach through the position setting that corresponds the fastener on the coupling, then can use the output shaft and the cross-flow wind wheel of fastener connection motor through this keep away a breach, very big has made things convenient for the installation of motor and cross-flow wind wheel. Meanwhile, the length of the shaft joint with the avoidance notch is smaller than the lengths of the other shaft joints, the occupation ratio of the shaft joint with the avoidance notch on the length of the whole cross-flow wind wheel is reduced, and the abnormal sound generated by the cross-flow wind wheel in the operation process is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a cross-flow fan according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a schematic structural view of another embodiment of the crossflow blower of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at D;

fig. 7 is a schematic structural view of an embodiment of the window type air conditioner of the present invention, wherein the sealing device is in a storage state;

FIG. 8 is a schematic view of a portion of the window air conditioner of FIG. 7;

fig. 9 is a schematic structural view of the window air conditioner of fig. 7, in which the sealing assembly is in an operating state.

The reference numbers illustrate:

reference numerals

Name (R)

Reference numerals

Name (R)

Reference numerals

Name (R)

100

Cross-flow fan

122

First shaft section

200

Casing (CN)

110

Electric machine

122a

Avoiding gap

210

Air inlet

111

Output shaft

123

Second shaft joint

220

Air outlet

120

Cross flow wind wheel

124

First blade

230

Heat exchange air duct

121

End cap

125

Second blade

240

Separation groove

121a

Shaft sleeve

126

Third blade

300

Sealing element

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides a cross-flow fan 100.

In the embodiment of the present invention, as shown in fig. 1 to 6, the cross-flow fan 100 includes a motor 110 and a cross-flow wind wheel 120. The motor 110 has an output shaft 111; the cross-flow wind wheel 120 comprises two end covers 121 arranged oppositely and a plurality of shaft joints arranged between the two end covers 121 and distributed along the axial direction of the cross-flow wind wheel 120, each shaft joint is provided with a plurality of blades arranged at intervals along the circumferential direction of the end cover 121, a shaft sleeve 121a is arranged on the inner wall surface of one end cover 121 in a protruding mode, and the output shaft 111 is connected with the shaft sleeve 121a through a fastening piece. The position of one of the shaft joints corresponding to the fastening member is provided with a space-avoiding notch 122a for mounting the fastening member, and the length of the shaft joint provided with the space-avoiding notch 122a is smaller than the lengths of the other shaft joints in the axial direction of the cross-flow wind wheel 120.

In this embodiment, each coupling includes a partition and a blade, the blades are arranged at intervals in the circumferential direction of the partition, and the plurality of blades are each curved in the rotational direction. The inside of the whole cross-flow wind wheel 120 is hollow, the end cover 121 is provided with a shaft hole, and the shaft sleeve 121a is fixed in the shaft hole and extends into the cavity of the wind wheel. The fastening member may be a screw, and a mounting hole is formed on the circumferential wall surface of the sleeve 121a, and a screw hole is formed at a position of the output shaft 111 of the motor 110 corresponding to the mounting hole. The output shaft 111 of the motor 110 extends into the shaft sleeve 121a from the shaft hole of the end cover 121, so that the screw passes through the mounting hole of the shaft sleeve 121a and is in threaded connection with the threaded hole of the output shaft 111, thereby realizing the fastening fit of the cross flow wind wheel 120 and the output shaft 111 of the motor 110.

The clearance gap 122a can be realized by the modes of the shaft joint such as leaf missing, notch forming, clearance increasing and the like, and only the space corresponding to the fastener or the mounting tool needs to be reserved on the shaft joint. The shape of the clearance gap 122a may be circular, rectangular, oval, polygonal, irregular, etc. Thus, during installation, a user or a worker may use a tool to screw the screw into the sleeve 121a and the output shaft 111. Thereby facilitating the installation of the motor 110 and the cross flow wind wheel 120. The length of the shaft coupling with the clearance gap 122a is smaller than the lengths of the other shaft couplings, and the lengths of the other shaft couplings may be equal or different. By minimizing the length of the shaft joint provided with the clearance gap 122a, the noise value of the shaft joint where the clearance gap 122a is located can be effectively reduced, and further the running noise of the whole cross-flow wind wheel 120 is reduced.

The utility model discloses cross-flow fan 100 keeps away a breach 122a through the position setting that corresponds the fastener on the coupling, then can use output shaft 111 and cross-flow wind wheel 120 that the fastener was connected motor 110 through this keep away a breach 122a, very big has made things convenient for the installation of motor 110 with cross-flow wind wheel 120. Meanwhile, the length of the shaft joint with the avoidance gap 122a is smaller than the lengths of the other shaft joints, the occupation ratio of the shaft joint with the avoidance gap 122a on the length of the whole cross-flow wind wheel 120 is reduced, and abnormal sound generated in the operation process of the cross-flow wind wheel 120 is effectively reduced.

On the basis of the above embodiment, referring to fig. 1, fig. 3 and fig. 5, the shaft joint provided with the clearance gap 122a is located at the end of the cross-flow wind wheel 120 adjacent to the motor 110. If the shaft joint with the clearance gap 122a is arranged in the middle of the whole cross-flow wind wheel 120 or at the end far away from the motor 110, the length of the shaft sleeve 121a and the length of the output shaft 111 of the motor 110 must be increased, which not only increases the wind resistance, but also makes the structure of the whole wind wheel more complex and heavy. Therefore, the shaft joint provided with the clearance gap 122a is located at the end part of the cross-flow wind wheel 120 close to the motor 110, so that the lengths of the shaft sleeve 121a and the rotating shaft can be effectively reduced, the wind resistance is reduced, and the structure of the whole wind wheel is simplified on the premise of meeting the installation requirement. Meanwhile, it can be understood that the air intake at the middle part of the heat exchanger corresponding to the cross flow wind wheel 120 is large, and the air intake at the two ends is small. The cross-flow wind wheel 120 is provided with a clearance gap 122a, and the length of the shaft joint provided with the clearance gap 122a is shortest, so that the whole cross-flow wind wheel 120 is in an unbalanced structure. Therefore, the shaft joint with the clearance gap 122a is located at the end of the cross-flow wind wheel 120 close to the motor 110, and the shortest shaft joint with the clearance gap 122a corresponds to the position with less air intake of the heat exchanger, so that the cross-flow wind wheel 120 can ensure that the air entering the heat exchanger is uniformly distributed when rotating while effectively reducing abnormal sound. In other embodiments, the shaft coupling with the clearance gap 122a can be a second shaft coupling, a third shaft coupling, etc. adjacent to the motor 110.

In an embodiment, the cross-flow wind wheel 120 has a first shaft joint 122 and a second shaft joint 123, the first shaft joint 122 is provided with the clearance gap 122a, and the length of the second shaft joint 123 is greater than the lengths of the other shaft joints in the axial direction of the cross-flow wind wheel 120;

in the axial direction of the cross-flow wind wheel 120, the length of the first shaft joint 122 is greater than or equal to the length of the shaft sleeve 121a and less than or equal to half of the length of the second shaft joint 123.

In the present embodiment, the length of the first coupling 122 is the shortest coupling among all couplings, and the length of the second coupling 123 is the longest coupling among all couplings. If the length of the first coupling 122 is made smaller than that of the shaft sleeve 121a, the length of the first coupling 122 may be made too short, thereby making it inconvenient to install the fastener. If the length of the first shaft joint 122 is greater than half of the length of the second shaft joint, the difference between the lengths of the first shaft joint 122 and the second shaft joint 123 is small, and the effect of reducing the noise is not obvious. By enabling the length of the first shaft joint 122 to be greater than or equal to the length of the shaft sleeve 121a and less than or equal to half of the length of the second shaft joint 123, the noise of the whole cross-flow wind wheel 120 can be effectively reduced while the installation of fasteners is facilitated.

In an embodiment, referring to fig. 2, 4 and 6, the blades include a first blade 124, a second blade 125 and a third blade 126 which are adjacent to each other in sequence, the clearance gap 122a is formed between the first blade 124 and the second blade 125, a distance between the first blade 124 and the second blade 125 is greater than a distance between the second blade 125 and the third blade 126, and a distance between the first blade 124 and the second blade 125 is greater than a maximum outer diameter of the fastener.

In the present embodiment, the clearance gap 122a is formed by increasing the gap between the first blade 124 and the second blade 125. The gap does not need to be additionally formed, and only the distance between the first blade 124 and the second blade 125 needs to be changed, so that the forming process of the avoiding gap 122a is simplified, and the blade of the wind wheel cannot be influenced. Therefore, the mounting requirement of the fastener is met, the manufacturing process is simplified, and the integral abnormal sound is reduced.

Specifically, the spacing between the first blade 124 and the second blade 125 is twice the spacing between the second blade 125 and the third blade 126. Thus, there is substantially one less vane between the first vane 124 and the second vane 125 to form the clearance gap 122 a. Therefore, the distance and the arrangement relation among other blades do not need to be changed, only one blade needs to be reduced on the shaft joint of the original wind wheel close to the motor 110, the manufacturing difficulty is greatly reduced, and the applicability is high.

In another embodiment, two adjacent blades corresponding to the fastening member are respectively provided with a first notch and a second notch, and the clearance notch 122a is formed between the first notch and the second notch. The first notch, the second notch and the gap between two adjacent blades form an avoiding notch 122a together, so as to avoid the fastener. The outline shape formed by the first notch and the second notch in an enclosing manner can be a regular shape or an irregular shape, and the specific shape is not limited herein. The first notch and the second notch are formed to have a profile with an inner diameter minimum dimension larger than a maximum outer diameter dimension of the fastener to facilitate installation of the fastener. Through set up first breach and second breach in order forming to avoid a breach 122a on adjacent blade, can keep original blade number, avoid the appearance of the pitch peak value of making an uproar, effectively reduce the noise value.

In other embodiments, the clearance gap 122a may be further formed on one of the blades corresponding to the fastener. The clearance gap 122a may be formed by punching a hole in one of the blades, with the clearance gap 122a being sized to be larger than the maximum outer diameter of the fastener. The shape of the clearance gap 122a may be circular, rectangular, oval, irregular, etc. The clearance gap 122a is formed on a single blade, so that the forming process is simple and easy to realize.

In one embodiment, as shown in fig. 1 and 5, the blades on the adjacent shaft joints are arranged in a staggered manner; or the blades on part of the plurality of shaft joints are arranged in a one-to-one correspondence mode, and the blades on the other shaft joints are arranged in a staggered mode. Thus, interference between discrete frequencies can be increased, and discrete frequency noise can be reduced. In another embodiment, the blades on two adjacent shaft joints are arranged in a one-to-one correspondence manner. Thus, after the cross-flow wind wheel 120 is installed, the situation of blade dislocation cannot occur on the surface of the cross-flow wind wheel.

The utility model discloses still provide a window air conditioner, please refer to fig. 7 to 9, this window air conditioner includes casing 200 and cross-flow fan 100, and casing 200 is equipped with air intake 210, air outlet 220 and communicates air intake 210 and air outlet 220's heat transfer wind channel 230, and cross-flow fan 100 locates in the heat transfer wind channel 230. The specific structure of the cross-flow fan 100 refers to the above embodiments, and since the window air conditioner adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. It should be noted that, the casing 200 has an indoor heat exchange air duct 230 and an outdoor heat exchange air duct 230, and the cross flow fan 100 can be disposed in both the indoor heat exchange air duct 230 and the outdoor heat exchange air duct 230. Generally, in order to save costs, the cross-flow fan 100 is used on the indoor side and the axial-flow fan is used on the outdoor side. The indoor noise can be effectively reduced.

In one embodiment, the cabinet 200 is configured with a separation groove 240 into which a screen at a window of a wall extends, the window type air conditioner further comprises a sealing member 300, the sealing member 300 is movably mounted on the separation groove 240, and the sealing member 300 is adapted to be moved to switch between a storage state and an operating state; wherein the content of the first and second substances,

in the accommodated state, the seal 300 is accommodated in the separation groove 240;

in the operative condition, the sealing member 300 projects laterally from the separating channel 240 and is adapted to be held against the inner wall of the window and/or the shutter.

In this embodiment, the window air conditioner may be installed in a mounting opening of a wall. The mounting opening may be a window, typically arranged in a rectangular shape. The partition groove 240 partitions the cabinet 200 into an indoor-side housing and an outdoor-side housing. The shield may be a pull-down window in the window that moves up and down, and the window may cooperate with the window air conditioner and the mounting opening to space the indoor and outdoor portions apart, thereby ensuring proper operation of the window air conditioner. The cabinet 200 may include a cabinet and a chassis disposed at a bottom of the cabinet and mounted on the mounting opening, and may be mounted on a window frame of the mounting opening. The case is provided with a downward-recessed partition groove 240, the window can move up and down relative to the wall, and at least a portion of the window can extend into the partition groove 240 when moving down, so as to separate the indoor part and the outdoor part of the window type air conditioner. The sealing member 300 is fitted to the mounting hole to seal a gap between the bottom wall of the window and the bottom wall of the mounting hole, thereby preventing the occurrence of air leakage, and thus improving the cooling and heating efficiency of the window type air conditioner. The window type air conditioner is convenient to operate, good in sealing performance, suitable for mounting ports of different models and high in practicability. The sealing member 300 may be made of non-metallic materials such as plastic, rubber, and silicone, or may be a metal member, and may be selected and designed according to other use requirements while satisfying the sealing requirement. Preferably, in order to improve the heat insulation effect of the sealing member 300, the sealing member 300 may be made of a heat insulation material, or the inside of the sealing member 300 may be filled with a heat insulation material.

The sealing element 300 is in a storage state and a working state, and when the window type air conditioner is in a transportation process, the sealing element 300 can be in the storage state, and the sealing element 300 can be stored in the machine shell 200, so that the occupied space of the sealing element 300 is reduced, and the packaging volume of the whole window type air conditioner is further reduced. When the window type air conditioner is assembled with the installation opening, the sealing member 300 can be adjusted to an operating state, that is, the sealing member 300 is unfolded from a side direction to seal a gap between the window and the installation opening. The sealing member 300 may have a connection end and a sealing end, and the connection end of the sealing member 300 is rotatably connected to the casing 200 by a hinge or a rotation shaft, so that the sealing member 300 may rotate relative to the casing 200 to switch the operation state and the storage state. When the sealing member 300 is in an operating state, the sealing end of the sealing member 300 can be tightly attached to the bottom wall surface of the mounting opening, so that the assembly gap between the window and the mounting opening is blocked, and the cold leakage phenomenon is prevented. The sealing member 300 may be provided only at one side in the width direction of the set cover 200 such that the other side in the width direction of the set cover 200 is closely attached to the inner wall of the installation opening. In order to make the sealing effect better, it is preferable that the sealing member 300 is provided at both sides of the cabinet 200 in the width direction, so that the gap between both sides of the cabinet 200 and the installation opening can be sealed.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A crossflow blower comprising:

a motor having an output shaft;

the cross-flow wind wheel comprises two opposite end covers and a plurality of shaft joints arranged between the two end covers and distributed along the axial direction of the cross-flow wind wheel, each shaft joint is provided with a plurality of blades arranged at intervals along the circumferential direction of the end cover, a shaft sleeve is convexly arranged on the inner wall surface of one end cover, and the output shaft is connected with the shaft sleeve through a fastener;

2. The crossflow blower of claim 1 wherein the hub provided with the clearance gap is located at the end of the crossflow wind wheel adjacent to the motor.

3. The crossflow blower of claim 2 wherein the crossflow wind wheel has a first shaft joint and a second shaft joint, the first shaft joint is provided with the clearance gap, and the length of the second shaft joint is greater than that of the other shaft joints in the axial direction of the crossflow wind wheel;

4. The crossflow blower of any one of claims 1 to 3, wherein the blades comprise a first blade, a second blade and a third blade which are adjacent in sequence, the clearance gap is formed between the first blade and the second blade, the distance between the first blade and the second blade is greater than the distance between the second blade and the third blade, and the distance between the first blade and the second blade is greater than the maximum outer diameter of the fastener.

5. The crossflow blower of claim 4, wherein a spacing between the first blade and the second blade is twice a spacing between the second blade and the third blade.

6. The crossflow blower of claim 1 wherein two adjacent blades corresponding to the fastener are respectively provided with a first notch and a second notch, and the clearance notch is formed between the first notch and the second notch.

7. The crossflow blower of claim 1 wherein one of the blades corresponding to the fastener is provided with the clearance gap.

8. The crossflow blower of claim 1,

blades on two adjacent shaft joints are arranged in a one-to-one correspondence manner; alternatively, the first and second electrodes may be,

9. A window type air conditioner, characterized in that, it comprises a casing, the casing is provided with an air inlet, an air outlet and a heat exchange air duct communicating the air inlet and the air outlet, the heat exchange air duct is provided with a cross flow fan as claimed in any one of claims 1 to 8.

10. The window air conditioner as claimed in claim 9, wherein the casing is formed with a partition groove into which a screen member positioned at a window of a wall extends, and further comprising a sealing member movably installed in the partition groove, the sealing member being adapted to be movable to switch between a storage state and an operating state; wherein the content of the first and second substances,

in the accommodated state, the seal is accommodated in the separation groove;