CN107101271B

CN107101271B - Ceiling machine

Info

Publication number: CN107101271B
Application number: CN201710345696.5A
Authority: CN
Inventors: 郦志华
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: 2017-05-12
Filing date: 2017-05-12
Publication date: 2023-05-30
Anticipated expiration: 2037-05-12
Also published as: CN107101271A

Abstract

The invention discloses a ceiling machine, which comprises a water receiving disc, a rear cover, a cross flow wind wheel, a motor shell and a driving device, wherein an air inlet is formed in the middle of the water receiving disc, and a plurality of air outlets are formed in the periphery of the air inlet; the rear cover is arranged above the water receiving disc and is provided with a plurality of accommodating cavities corresponding to the air outlet positions; the cross flow wind wheels are correspondingly arranged in the plurality of cavities; the motor casing is arranged between the end parts of two adjacent cross-flow wind wheels, the motor casing is provided with a motor groove, and the motor casing is propped between the water receiving disc and the rear cover; the driving device comprises a plurality of motors, and each motor is correspondingly arranged in each motor groove and is correspondingly connected with each cross flow wind wheel. The technical scheme of the invention reduces the noise generated by the ceiling machine due to the vibration.

Description

Ceiling machine

Technical Field

The invention relates to the technical field of air conditioners, in particular to a ceiling machine.

Background

An axial flow wind wheel is arranged in the existing ceiling machine, and when the centrifugal wind wheel works, air flow is led in from an air inlet and then led out from an air outlet. However, centrifugal wind wheels are noisier during operation.

Through the inventor conception, if the centrifugal wind wheel is changed into a plurality of cross-flow wind wheels (for example, four), the noise generated by the fan can be greatly reduced, but as each cross-flow wind wheel needs to be driven by one motor, the motor in the ceiling machine is too many, the vibration is serious, and the noise is large.

Disclosure of Invention

The main purpose of the invention is to provide a ceiling machine, which aims to reduce noise of the ceiling machine

In order to achieve the above object, the present invention provides a ceiling machine, comprising:

the middle part of the water receiving disc is provided with an air inlet, and the periphery of the air inlet is provided with a plurality of air outlets;

the rear cover is arranged above the water receiving disc and is provided with a plurality of accommodating cavities corresponding to the air outlet positions;

the cross flow wind wheels are correspondingly arranged in the plurality of cavities;

the motor casing is arranged between the end parts of two adjacent cross-flow wind wheels and is provided with a motor groove, and the motor casing is propped between the water receiving disc and the rear cover;

the driving device comprises a plurality of motors, and each motor is correspondingly arranged in each motor groove and is correspondingly connected with each cross flow wind wheel.

Preferably, at least one bottom of the motor housing or at least one top of the motor is provided with a flexible pad.

Preferably, the bottom of each motor casing, or the top of each motor, is provided with a flexible pad, wherein the thickness between any two flexible pads is different.

Preferably, the ceiling machine further comprises a volute tongue extending obliquely along the direction from the air inlet to the air outlet, and the motor casing is connected with one end of the volute tongue.

Preferably, the motor casing comprises an upward abutting plate, the abutting plate is recessed to form the motor groove, and the abutting plate is supported by two adjacent volute tongues.

Preferably, a positioning hole is formed in the volute tongue, a positioning column is arranged on the lower surface of the abutting plate in a protruding mode, and the motor casing is inserted into the positioning hole through the positioning column to be positioned and mounted in the volute.

Preferably, a supporting part abutting against the water receiving disc is arranged on the lower surface of the volute tongue, and the supporting part is arranged in a hollow mode.

Preferably, the volute tongue and the motor casing are integrally formed.

Preferably, the motor casing and the volute tongues are integrally formed.

Preferably, the number of the air outlets is four.

According to the technical scheme, the motor shell is abutted between the water receiving disc and the rear cover, so that the motor shell is firmly installed, vibration of the motor shell caused by motor operation is reduced, and noise of the ceiling machine caused by the vibration is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of an embodiment of a ceiling fan;

FIG. 2 is an exploded view of the ceiling fan of FIG. 1;

FIG. 3 is a schematic view of the water pan of FIG. 2;

FIG. 4 is a schematic view of the middle structure of the drip tray of FIG. 3;

FIG. 5 is a schematic diagram of the assembly of the volute tongue, cross-flow rotor, motor housing and motor of FIG. 2;

FIG. 6 is a top view of the assembled structure of FIG. 5;

fig. 7 is a schematic diagram of an embodiment of a motor with a flexible pad mounted thereto.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a ceiling machine.

Referring to fig. 1, 2, 3 and 4, the ceiling machine 1 has a housing including a water pan 10 and a rear cover 20, the water pan 10 and the rear cover 20 are spliced to form an inner cavity, an air inlet 10a is formed in the middle of the water pan 10, and an air outlet 10b is formed in the periphery of the air inlet 10 a; a heat exchanger 30 and a cross flow wind wheel 40 are also arranged in the inner cavity. When the cross-flow wind wheel 40 operates, air flows into the shell from the air inlet 10a, exchanges heat with the heat exchanger 30, finally enters the cross-flow wind wheel 40 and is blown out from the air outlet 10 b.

In the embodiment of the invention, an air inlet 10a is arranged in the middle of the water pan 10, and a plurality of air outlets 10b are arranged at the periphery of the air inlet 10 a; the rear cover 20 is installed above the water pan 10, and the rear cover 20 has a plurality of cavities 20a corresponding to the plurality of air outlets 10b; the cross-flow wind wheel 40 is correspondingly disposed in the plurality of cavities 20 a. In addition, a driving device and a motor casing 70 are also arranged in the inner cavity. The driving device comprises a plurality of motors 60, and each motor 60 is correspondingly connected with each cross-flow wind wheel 40; the motor casing 70 is disposed between the end portions of two adjacent cross-flow wind wheels 40, the motor casing 70 has a motor slot 70a, each motor 60 is correspondingly mounted in each motor slot 70a, and the motor casing 70 abuts against between the water pan 10 and the rear cover 20.

Compared with the vertical water pan 10 in the conventional ceiling machine 1, the heat exchanger 30 in the present embodiment is instead horizontally arranged. However, since the heat exchanger 30 is disposed above the air inlet 10a, condensed water generated on the surface of the heat exchanger 30 is prevented from dropping downward from the air inlet 10a as much as possible. Here, the middle portion of the water pan 10 may not only allow air to enter, but also receive condensed water generated by the heat exchanger 30. For example, a water receiving tank 10c is disposed in the middle of the water receiving tray 10, the water receiving tank 10c and the air inlet 10a are both in a strip shape and are alternately disposed, so that the water receiving tank 10c located around the air inlet 10a can receive condensed water generated by the heat exchanger 30 while air passes through the water receiving tray 10 from the air inlet 10 a. Of course, if the condensed water formed on the surface of the heat exchanger 30 is to be just dropped into the water receiving tank 10c, a drainage table (not visible in the drawing) may be provided on the lower surface of the heat exchanger 30, and the water receiving tank 10c may be provided directly below the drainage table.

Referring to fig. 5, 6 and 7, since the number of motors 60 is relatively large (generally four, but of course three or more), each motor 60 generates a certain vibration when running, and the vibration amplitude generated by the vibration of the plurality of motors 60 together is relatively large, the installation firmness of the motors 60 is required to be relatively high, otherwise, the ceiling fan 1 generates relatively large noise.

The motor 60 is mounted in a motor groove 70a of the motor case 70, the opening of the motor groove 70a is upward, and the lower part of the motor groove 70a is partially hollowed out, so that the motor groove 70a is penetrated (the heat of the motor 60 is dissipated). In order to reduce the influence of the vibration of the motor 60 on the motor case 70, a shock pad may be provided in the motor groove 70a, and the shock pad covers a portion of the motor 60, so that the conduction of the vibration of the motor 60 may be reduced.

Since the number of motors 60 is plural, if the frequencies of vibrations generated by the plural motors 60 are equivalent, resonance occurs, and thus the amplitude is larger and the noise is also larger.

The motor casing 70 is abutted between the water pan 10 and the rear cover 20, so that flexible pads 80 with different thicknesses can be arranged at the bottom of the motor casing 70 or at the top of the motor 60, and thus, the frequency of the motor casing 70 generated by the operation of the motor 60 can be adjusted, so that the vibration frequency of the motor casing 70 is far away from the resonance region.

Taking four motor cases 70 as an example, a flexible pad 80 may be added between one motor case 70 and the rear cover 20, and the other three motor cases 70 may not be added with flexible pads 80. Flexible pads 80 of different thickness may also be added between two of the motor housings 70 and the rear cover 20. Flexible pads 80 of different thickness may also be added between three or four motor housings 70 and rear cover 20. Of course, flexible pads 80 of different materials (flexible pads 80 of different materials have different elasticity, so that after the flexible pads 80 are mounted, the mounting fastening degree of the motor housing 70 is also different) can be added between the motor housing 70 and the rear cover 20

According to the technical scheme, the motor casing 70 is abutted between the water pan 10 and the rear cover 20, so that the motor casing 70 is firmly installed, vibration of the motor casing 70 caused by operation of the motor 60 is reduced, and noise of the ceiling machine 1 caused by the vibration is reduced.

The motor case 70 is affected by the vibration of the motor 60, and the dimension of the vibration of the motor case 70 is also large (multidirectional vibration), such as up-down vibration, left-right vibration, or other directional vibration. In this embodiment, in order to further reduce the vibration of the motor casing 70, the ceiling fan 1 further includes a volute tongue 50 (refer to fig. 5) that extends obliquely in a direction from the air inlet 10a toward the air outlet 10b, and the motor casing 70 is connected to one end of the volute tongue 50.

The motor casing 70 is located at one end of the length direction of the volute tongue 50, and after the volute tongue 50 is connected with the motor casing 70, on one hand, the air leakage phenomenon can be reduced (after part of air flow enters the heat exchanger 30 for heat exchange, the part of air flow enters between the volute tongue 50 and the cross-flow wind wheel 40, the part of air flow may possibly flow along the length direction of the volute tongue 50, and if the gap between the motor casing 70 and the volute tongue 50 is larger, the air flow leakage is serious, so that the air outlet efficiency can be affected). On the other hand, the motor casing 70 can be supported, and the vibration dimension of the motor casing 70 can be reduced.

Further, in order to enhance the connection firmness between the motor casing 70 and the volute tongue 50, in this embodiment, the motor casing 70 includes an abutment plate 70b facing upwards, the abutment plate 70b is recessed to form the motor groove 70a, and the abutment plate 70b is supported by two adjacent volute tongues 50. The lower half of the motor 60 is located in the motor groove 70a, when the motor 60 rotates, the abutting plate 70b and the motor casing 70 below the abutting plate 70b vibrate, after being supported by the two volute tongues 50, the vibration abuts against the plate 70b, the vibration is conducted to the three reverse directions of the water pan 10, the rear cover 20 and the volute tongues 50, and the volute tongues 50 are located between the water pan 10 and the rear cover 20, so that the volute tongues 50 share the vibration of the rear cover 20 and the water pan 10, and the vibration of the casing of the ceiling machine 1 is relieved. In addition, since the vibration of the motor 60 mainly originates from the eccentricity of the motor shaft, the abutting plate 70b is relatively close to the vibration source, the vibration amplitude of the abutting plate 70b is relatively large, and the supporting of the abutting plate 70b by the two tongues 50 can greatly reduce the vibration amplitude of the casing of the ceiling machine 1.

In the above embodiment, the volute tongue 50 supports the abutment plate 70b in the up-down direction, but the vibration of the abutment plate 70b is multi-dimensional, so that the volute tongue 50 and the abutment plate 70b move relatively to generate friction. In view of this, in one embodiment, the volute tongue 50 is provided with a positioning hole, and a positioning post (not visible in the figure) is protruding on the lower surface of the abutment plate 70b, and the motor casing 70 is positioned and mounted on the volute tongue 50 by inserting the positioning post into the positioning hole. In this way, after the volute tongue 50 abuts against the abutment plate 70b, the volute tongue 50 and the abutment plate cannot move relatively, so that the vibration dimension of the motor casing 70 is reduced.

In another preferred embodiment, a supporting portion 50a abutting against the water pan 10 is disposed on the lower surface of the volute tongue 50, and the supporting portion 50a is hollow. Since the motor casing 70 is connected to the volute tongue 50, part of vibration generated from the motor casing 70 is transmitted to the volute tongue 50. Here, since the support portion 50a is provided in a hollow shape, the support portion 50a has a certain absorption effect on vibration or noise, and thus vibration and noise can be reduced.

Considering that the motor 60 is in operation, if the motor case 70 is not connected to the volute tongue 50, the volute tongue 50 may leak air in its length direction. If the motor 60 is connected to the volute tongue 50, noise may be generated therebetween due to intermittent interference due to vibration of the motor case 70. In another preferred embodiment, the volute tongue 50 is integrally formed with the motor housing 70. In this way, the motor casing 70 and the volute tongue 50 are more convenient to install while reducing noise, and the motor casing and the volute tongue 50 are not connected by adopting a fixing piece.

Unlike the previous embodiments, in a preferred embodiment, a plurality of the motor housings 70 are integrally formed with a plurality of the tangs 50. I.e. all motor housings 70 and all tangs 50 are integrally formed. Typically, the motor housing 70 and the volute tongue 50 are all plastic pieces, and thus may be integrally formed by an injection molding process.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A ceiling fan, comprising:

the driving device comprises a plurality of motors, and each motor is correspondingly arranged in each motor groove and is correspondingly connected with each cross flow wind wheel;

the heat exchanger is arranged above the air inlet and horizontally arranged.

2. A smallpox machine as claimed in claim 1 wherein at least one of the bottom of the motor housing or the top of the motor is provided with a flexible pad.

3. A ceiling fan as claimed in claim 2, wherein the bottom of each motor housing, or the top of each motor, is provided with flexible pads, wherein the thickness between any two flexible pads varies.

4. A smallpox according to any one of claims 1 to 3 further comprising a volute tongue extending obliquely in a direction from the inlet to the outlet, the motor housing being connected to one end of the volute tongue.

5. The ceiling fan of claim 4 wherein said motor housing includes an upwardly facing abutment plate recessed therein to form said motor slot, said abutment plate being supported by adjacent ones of said tangs.

6. The ceiling fan according to claim 5, wherein the volute tongue is provided with a positioning hole, a positioning column is convexly arranged on the lower surface of the abutting plate, and the motor casing is inserted into the positioning hole through the positioning column to be positioned and installed on the volute tongue.

7. The ceiling fan according to claim 4, wherein a lower surface of the tongue is provided with a supporting portion abutting against the water receiving tray, and the supporting portion is provided in a hollow shape.

8. The ceiling fan of claim 4 wherein the volute tongue is integrally formed with the motor housing.

9. The ceiling fan of claim 4 wherein a plurality of said motor housings are integrally formed with a plurality of said tangs.

10. A smallpox machine according to any one of claims 1 to 3 wherein the number of outlets is four.