Ceiling unit and air conditioner

Abstract

The present invention provides a ceiling unit and an air conditioner, which relate to the technical field of air conditioning equipment and are designed to solve the problem of small air output of existing ceiling units during operation. A protrusion is provided in the air flow space formed by the centrifugal fan, the air guide ring and the heat exchanger of the ceiling unit, and the protrusion is relatively fixedly arranged with respect to the water receiving tray of the ceiling unit, and the protrusion extends in the direction close to the blades of the centrifugal fan, wherein the protrusion is non-continuously arranged along the circumference of the centrifugal fan. The air conditioner includes the above-mentioned ceiling unit. The ceiling unit and the air conditioner provided by the present invention have large air output and low noise.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, in particular to a ceiling unit and an air conditioner. Background Art

[0002] With the development of society, ceiling fans have been widely used. When using ceiling fans, air is sucked in by the air intake grille located at the center below under the action of the centrifugal fan, guided by the air guide ring, and then blown out from the surrounding areas below after heat exchange with the heat exchanger located around the centrifugal fan. However, the existing ceiling fans have a small air output when working. Summary of the invention

[0003] The first object of the present invention is to provide a ceiling air conditioner to solve the technical problem that the air output of the existing ceiling air conditioner is small during operation.

[0004] The ceiling machine provided by the present invention has a protrusion arranged in the air flow space formed by the centrifugal fan, the air guide ring and the heat exchanger. The protrusion is fixedly arranged relative to the water receiving tray of the ceiling machine, and the protrusion extends in the direction close to the blades of the centrifugal fan, wherein the protrusion is discontinuously arranged along the circumference of the centrifugal fan.

[0005] During the operation of the ceiling machine, when the centrifugal fan is started, the outside air can be sucked into the ceiling machine, and flow under the guidance of the air guide ring, and exchange heat with the heat exchanger arranged around the centrifugal fan. By arranging a protrusion extending in the direction close to the blades of the centrifugal fan in the air flow space formed by the centrifugal fan, the air guide ring and the heat exchanger, the airflow after heat exchange can be prevented from flowing back to the blades through the gap between the air guide ring and the blades, thereby effectively suppressing the circulation flow generated in the gap between the air guide ring and the front end of the side of the blade, and increasing the air output of the ceiling machine during operation.

[0006] In addition, since the protrusions are discontinuously arranged along the circumference of the centrifugal fan, that is, the centrifugal fan is not provided with protrusions at all positions along its circumference. Among them, at the position where there is no protrusion, the space at the front end of the side of the centrifugal fan blade is larger, and the flow of gas will not be hindered by the protrusion, so that the gas at this position can flow smoothly, thereby avoiding the collision of this part of the airflow with the airflow flowing upward from the inside of the air guide ring due to its slower flow. On the one hand, the turbulence near the air outlet is reduced, and on the other hand, the noise during the operation of the ceiling fan is also reduced.

[0007] In summary, the ceiling unit can increase the air volume while reducing noise, which is beneficial to improving the user experience.

[0008] Furthermore, the heat exchanger is arranged around the centrifugal fan, and the cross-sectional shape of the heat exchanger along the radial direction of the centrifugal fan is roughly rectangular, the heat exchanger includes straight segments located at each straight side of the rectangle and curved segments located at each corner point of the rectangle, and the protrusion is arranged at a position directly opposite to the straight segment in the airflow space. By arranging the protrusion at a position directly opposite to the straight segment in the airflow space, that is, arranging the protrusion at a position of the heat exchanger closer to the outermost edge of the fan blade, the distance S between the protrusion and the front end of the side edge of the fan blade can be further reduced, so that the inhibitory effect on the circulation flow of the airflow at this position is more obvious.

[0009] Furthermore, the protrusions are arranged at positions in the airflow space directly opposite to the straight sections. This arrangement enables the centrifugal fan to prevent the gas after heat exchange from flowing back to the fan blades at multiple positions along its circumference, which not only increases the air output, but also ensures the air output uniformity of the ceiling fan of this embodiment.

[0010] Furthermore, the distance between the surface of the protrusion close to the centrifugal fan and the rotation axis of the blade is R1, and the distance between the outermost edge of the blade and its rotation axis is R0, wherein R0≤R1<1.2R0. With such a configuration, the gas will not be substantially hindered by the protrusions during the flow from the air intake grille to the centrifugal fan, thus optimizing the gas flow path and ensuring the smooth flow of the gas, which not only ensures the suction effect of the centrifugal fan, but also effectively suppresses the circulating flow generated near the blades.

[0011] Furthermore, the protrusion is fixedly connected to the water receiving tray. This arrangement ensures the installation stability of the protrusion, thereby achieving effective suppression of the circulation flow.

[0012] Furthermore, the protrusion is integrally formed with the water receiving tray. This arrangement can reduce the number of parts, improve assembly efficiency, save material costs, and reduce manufacturing costs.

[0013] Furthermore, the protrusion is formed by partially extending the embankment of the water receiving tray. This arrangement is convenient for processing and manufacturing.

[0014] Furthermore, the surface of the protrusion away from the centrifugal fan is an inclined surface, and the inclined surface extends and slopes from bottom to top in a direction away from the heat exchanger. This arrangement increases the horizontal projection area of ​​the water tank of the water receiving tray, making it easier to receive water.

[0015] The second object of the present invention is to provide an air conditioner to solve the technical problem that the existing ceiling air conditioner has a small air output when working.

[0016] The air conditioner provided by the present invention comprises an outdoor unit and the above-mentioned ceiling unit.

[0017] By arranging the above-mentioned ceiling unit in the air conditioner, the air conditioner accordingly has all the advantages of the above-mentioned ceiling unit, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic cross-sectional view of the internal structure of a ceiling machine provided by the prior art;

[0020] Figure 2 A three-dimensional schematic diagram of a partial structure of a ceiling machine provided in an embodiment of the present invention;

[0021] Figure 3 The ceiling machine provided by the embodiment of the present invention is Figure 2 Schematic diagram of the internal structure section under the AA section;

[0022] Figure 4 The ceiling machine provided by the embodiment of the present invention is Figure 2 Schematic diagram of the partial cross-section of the internal structure under the AA section.

[0023] Description of reference numerals:

[0024] 100'- centrifugal fan; 200'- air guide ring; 300'- heat exchanger; 600'- water tray; 700'- air intake grille; 110'- fan blade;

[0025] 100-centrifugal fan; 200-air guide ring; 300-heat exchanger; 400-electric heating component; 500-protrusion; 600-water tray; 700-intake grille; 800-air outlet;

[0026] 110-fan blades;

[0027] 510-Bevel. DETAILED DESCRIPTION

[0028] Figure 1 The following is a schematic diagram of the internal structure of the ceiling machine provided by the prior art. Figure 1As shown, the ceiling machine generally includes a centrifugal fan 100', an air guide ring 200', an air intake grille 700', a water receiving tray 600' and a heat exchanger 300', wherein the centrifugal fan 100' provides power for the airflow; the air intake grille 700' is located below the centrifugal fan 100', and under the action of the centrifugal fan 100', air can be sucked in from the air intake grille 700'; the air guide ring 200' is located between the air intake grille 700' and the centrifugal fan 100', and is used to guide the airflow entering from the air intake grille 700'; the heat exchanger 300' is roughly distributed in a ring shape around the centrifugal fan 100', and is used to perform heat exchange with the airflow blown out by the centrifugal fan 100', so that the wind blown out by the ceiling machine meets the temperature requirements of the user; the water receiving tray 600' is located below the heat exchanger 300', and is used to receive the moisture generated during the operation of the ceiling machine.

[0029] When the ceiling fan is used, under the action of the centrifugal fan 100', air is sucked in by the air intake grille 700' located at the center below, guided by the air guide ring 200', and after heat exchange with the heat exchanger 300' located around the centrifugal fan 100', it is blown out from the surrounding areas below, thereby meeting the user's usage needs.

[0030] However, during the use of the above-mentioned ceiling machine, part of the airflow blown out by the centrifugal fan 100', especially the airflow blown out from the side of the blade 110', is relatively high pressure at the outlet side of the blade 110' and relatively low pressure at the inlet side of the blade 110'. Due to the existence of this pressure difference, the airflow can flow smoothly in the space formed by the air guide ring 200', the centrifugal fan 100' and the heat exchanger 300'. At the same time, a circulating flow will also occur in the gap between the air guide ring 200' as a stationary body and the front end of the side of the blade 110' as a rotating body. Among them, the circulating flow is as follows: Figure 1 Indicated by the dashed arrow.

[0031] Due to the existence of the circulating flow, the gas that has undergone heat exchange with the heat exchanger 300' flows back to the fan blade 110' through the gap between the air guide ring 200' and the fan blade 110', thereby reducing the heat exchange performance of the ceiling fan and reducing the air volume. Generally, in order to increase the air volume for heat exchange through the heat exchanger 300', it is necessary to increase the speed of the centrifugal fan 100', which will inevitably increase the air supply noise.

[0032] However, if the above-mentioned circulating flow is suppressed as much as possible, the speed of the air flow blown out from the gap between the air guide ring 200' and the front end of the side of the centrifugal fan 100' will be extremely slow. This part of the air flow will collide with the air flow flowing into the centrifugal fan 100' from the inner surface of the air guide ring 200' at the entrance of the fan blade 110', forming turbulence, which will also increase the air supply noise.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] Figure 2 A three-dimensional schematic diagram of the partial structure of the ceiling machine provided in this embodiment, Figure 3 The ceiling machine provided in this embodiment is Figure 2 Schematic diagram of the internal structure section under the AA section. Figure 4 The ceiling machine provided in this embodiment is Figure 2 Schematic diagram of the partial cross section of the internal structure under the AA section. Figures 2 to 4 As shown, the present embodiment provides a ceiling machine, in which a protrusion 500 is arranged in the air flow space formed by the centrifugal fan 100, the air guide ring 200 and the heat exchanger 300 of the ceiling machine. Specifically, the protrusion 500 is relatively fixedly arranged with respect to the water receiving tray 600 of the ceiling machine, and the protrusion 500 extends in the direction close to the fan blades 110 of the centrifugal fan 100, wherein the protrusion 500 is discontinuously arranged along the circumference of the centrifugal fan 100.

[0035] During the operation of the ceiling machine, when the centrifugal fan 100 is started, the outside air can be sucked into the ceiling machine, and flow under the guidance of the air guide ring 200, and exchange heat with the heat exchanger 300 arranged around the centrifugal fan 100. By arranging a protrusion 500 extending in the direction of the blade 110 close to the centrifugal fan 100 in the air flow space formed by the centrifugal fan 100, the air guide ring 200 and the heat exchanger 300, it is possible to prevent the airflow after heat exchange from flowing back to the blade 110 through the gap between the air guide ring 200 and the blade 110, thereby effectively suppressing the circulation flow generated in the gap between the air guide ring 200 and the front end of the side of the blade 110, and increasing the air output of the ceiling machine during operation.

[0036] In addition, since the protrusions 500 are arranged discontinuously along the circumference of the centrifugal fan 100, that is, the protrusions 500 are not arranged at all positions along the circumference of the centrifugal fan 100, wherein, at the position where the protrusions 500 do not exist, the space at the front end of the side of the blade 110 of the centrifugal fan 100 is larger, and the flow of gas will not be hindered by the protrusions 500, so that the gas at this position can flow smoothly, thereby avoiding the collision of this part of the airflow with the airflow flowing upward from the inside of the air guide ring 200 due to its slower flow. On the one hand, the turbulence near the air outlet 800 is reduced, and on the other hand, the noise during the operation of the ceiling machine is also reduced.

[0037] In summary, the ceiling unit can increase the air volume while reducing noise, which is beneficial to improving the user experience.

[0038] Specifically, the heat exchanger 300 is arranged around the centrifugal fan 100, and the cross-sectional shape of the heat exchanger 300 along the radial direction of the centrifugal fan 100 is roughly rectangular, wherein the heat exchanger 300 includes straight segments located at each straight side of the rectangle and curved segments located at each corner point of the rectangle, wherein the protrusion 500 is arranged at a position in the air flow space directly opposite to the straight segments.

[0039] In the ceiling fan, the heat exchanger 300 is annularly arranged around the centrifugal fan 100, and the annular direction of the heat exchanger 300 is substantially consistent with the annular direction of the water tank of the water receiving tray 600. The heat exchanger 300 is supported in the water tank of the water receiving tray 600. Figure 2 As shown, the distance from the approximate center of the straight segment of the rectangle to the outermost edge of the fan blade 110 can be recorded as D1, and the distance from the farthest end of the curved segment of the rectangle to the outermost edge of the fan blade 110 can be recorded as D2.

[0040] By setting the protrusion 500 at a position directly opposite to the straight section in the airflow space, that is, setting the protrusion 500 at a position where the heat exchanger 300 is close to the outermost edge of the fan blade 110, the distance S between the protrusion 500 and the front end of the side of the fan blade 110 can be further reduced, so that the inhibitory effect on the circulation of the airflow at this position is more obvious. If the protrusion 500 is not set at a position where the heat exchanger 300 is far from the outermost edge of the fan blade 110, the gas flow space at the front end of the side of the fan blade 110 at this position can be further increased, so that the gas can flow out quickly at this position, preventing this part of the airflow from colliding with the airflow flowing upward from the inside of the air guide ring 200 due to the slow flow speed, and preventing the airflow flowing into the fan blade 110 from becoming turbulent, thereby achieving the purpose of reducing the air supply noise at the entrance of the fan blade 110 and improving the user experience.

[0041] Please continue to refer to Figure 2 In this embodiment, specifically, a protrusion 500 is provided at a position in the airflow space directly opposite to each straight segment.

[0042] By arranging protrusions 500 at positions directly opposite to each straight section of the heat exchanger 300 in the air flow space, the centrifugal fan 100 can prevent the gas after heat exchange from flowing back to the fan blades 110 at multiple positions along its circumference, which not only increases the air output, but also ensures the uniformity of the air output of the ceiling fan of this embodiment.

[0043] Please continue to refer to Figure 4 In this embodiment, the distance between the surface of the protrusion 500 close to the centrifugal fan 100 and the rotation axis of the blade 110 is R1, and the distance between the outermost edge of the blade 110 and its rotation axis is R0, wherein R0≤R1<1.2R0.

[0044] Specifically, Figure 3 and Figure 4 As shown, the ceiling machine further includes an electric heating component 400, which is disposed between the centrifugal fan 100 and the heat exchanger 300, wherein the surface of the electric heating component 400 close to the centrifugal fan 100 is at a distance of 1.2R0 from the rotation axis of the blade 110. That is, along the radial direction of the centrifugal fan 100, the protrusion 500 is closer to the blade 110 than the electric heating component 400.

[0045] Through the above arrangement, the gas can first pass through the protrusion 500 and then pass through the electric heating component 400 during the outward flow, thereby optimizing the gas flow path and effectively suppressing the circulating flow generated near the fan blades 110, thereby further increasing the effective air volume of the air blown out from the centrifugal fan 100 for heat exchange through the heat exchanger 300, and reducing the noise during the operation of the ceiling fan. In addition, the above arrangement also ensures that the gas will basically not be hindered by the protrusion 500 during the flow from the air intake grille 700 to the centrifugal fan 100, thereby ensuring the smooth flow of the gas and thus ensuring the air suction effect of the centrifugal fan 100.

[0046] Specifically, in this embodiment, the protrusion 500 is fixedly connected to the water receiving tray 600 .

[0047] The protrusion 500 is fixedly connected to the water receiving tray 600, so that the water receiving tray 600 becomes the installation carrier of the protrusion 500. Such an arrangement can provide a reliable installation position for the protrusion 500, ensure the installation stability of the protrusion 500, and thus effectively suppress the circulation flow.

[0048] In other optional embodiments, the protrusion 500 may be configured to be fixedly connected to the air guide ring 200, or the protrusion 500 may be configured to be fixedly connected to the non-rotating part of the centrifugal fan 100, so that the protrusion 500 and the water receiving tray 600 are relatively fixedly arranged.

[0049] Preferably, in this embodiment, the protrusion 500 and the water receiving tray 600 are integrally formed.

[0050] By configuring the protrusion 500 to be integrally formed with the water tray 600, on the one hand, the number of parts of the ceiling machine of this embodiment can be reduced, thereby optimizing the assembly process and improving assembly efficiency, and on the other hand, material costs can be saved and manufacturing costs can be reduced. In addition, such a configuration can also improve the connection strength between the protrusion 500 and the water tray 600 to a certain extent, thereby ensuring the stability of the protrusion 500.

[0051] Please continue to refer to Figures 2 to 4In this embodiment, the protrusion 500 is formed by partially extending the embankment of the water receiving tray 600.

[0052] This form of forming the protrusion 500 by partially extending the embankment of the water receiving tray 600 is easy to process and manufacture.

[0053] Please continue to refer to Figure 4 In this embodiment, the surface of the protrusion 500 away from the centrifugal fan 100 is an inclined surface 510. Specifically, the inclined surface 510 extends and tilts from bottom to top in a direction away from the heat exchanger 300.

[0054] By setting the surface of the protrusion 500 away from the centrifugal fan 100 as a slope 510, not only the horizontal projection area of ​​the water groove of the water receiving tray 600 is increased, making it easier to collect water, but also the setting of the slope 510 can play a certain guiding role on the water in the reflux gas, thereby draining this part of the water into the water groove of the water receiving tray 600.

[0055] In addition, this embodiment also provides an air conditioner, which includes an outdoor unit and the above-mentioned ceiling unit.

[0056] By arranging the above-mentioned ceiling unit in the air conditioner, the air conditioner accordingly has all the advantages of the above-mentioned ceiling unit, which will not be described in detail here.

[0057] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0058] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0059] In the above embodiments, the descriptions of directions such as “upper” and “lower” are all based on the drawings.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ceiling machine, characterized in that, A protrusion (500) is provided in the air flow space formed by the centrifugal fan (100), the air guide ring (200) and the heat exchanger (300) of the ceiling machine. The protrusion (500) is fixedly arranged relative to the water receiving tray (600) of the ceiling machine, and the protrusion (500) extends in a direction close to the fan blades (110) of the centrifugal fan (100), wherein the protrusion (500) is discontinuously arranged along the circumference of the centrifugal fan (100); the heat exchanger (300) is arranged around the centrifugal fan (100), and the protrusion (500) is fixedly connected to the water receiving tray (600).

2. The ceiling machine according to claim 1, characterized in that: The cross-sectional shape of the heat exchanger (300) along the radial direction of the centrifugal fan (100) is roughly rectangular, the heat exchanger (300) comprises straight segments located at each straight side of the rectangle and curved segments located at each corner point of the rectangle, and the protrusion (500) is arranged at a position in the airflow space directly opposite to the straight segment.

3. The ceiling machine according to claim 2, characterized in that: The protrusions (500) are arranged at positions in the airflow space directly opposite to each of the straight segments.

4. The ceiling machine according to claim 1, characterized in that: The distance between the surface of the protrusion (500) close to the centrifugal fan (100) and the rotation axis of the blade (110) is R1, and the distance between the outermost edge of the blade (110) and its rotation axis is R0, wherein R0≤R1<1.2R0.

5. The ceiling machine according to claim 1, characterized in that: The protrusion (500) and the water receiving tray (600) are integrally formed.

6. The ceiling machine according to claim 5, characterized in that: The protrusion (500) is formed by partially extending the embankment of the water receiving tray (600).

7. The ceiling machine according to claim 1, characterized in that: The surface of the protrusion (500) away from the centrifugal fan (100) is a slope (510), and the slope (510) extends and tilts from bottom to top in a direction away from the heat exchanger (300).

8. An air conditioner, characterized in that: It comprises an outdoor unit and the ceiling unit according to any one of claims 1 to 7.

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