Guide ring and air conditioning cabinet

Abstract

The present application provides a guide ring and an air conditioner cabinet. The guide ring comprises a ring body (1) and a guide member (2) arranged on the inner peripheral wall of the ring body (1), the guide member (2) protrudes from the inner peripheral wall of the ring body (1) toward the center of the ring body (1), and the guide member (2) extends along the axial direction of the ring body (1) to guide the fluid flowing through the guide ring. According to the guide ring of the present application, the airflow state in the air guide channel can be effectively improved, the generation of turbulence can be reduced, the aerodynamic noise can be reduced, and the ventilation volume can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a guide ring and an air conditioning cabinet. Background Art

[0002] At present, general centrifugal cabinet or cross-flow cabinet air conditioners have a fixed air supply mode, and both cold and hot air are blown out from the same air outlet. The wind direction is deflected only by the air guide mechanism. When cooling or heating, the air flow often sinks or floats before reaching the preset position, resulting in uneven temperature distribution in the room, long heat exchange time, and poor user comfort. Compared with general air conditioner cabinets, reversible air supply air conditioners have multiple upper and lower air outlets, and can switch according to the working mode: when the air conditioner is in cooling mode, the upper air outlet is the air outlet and the lower air outlet is the air inlet; when the air conditioner is in heating mode, the upper air outlet is the air inlet and the lower air outlet is the air outlet. Therefore, the reversible air supply air conditioner can make the indoor temperature distribution more uniform and improve comfort.

[0003] However, for the air-conditioning cabinet, the heat exchanger and the fan are respectively located at the upper and lower ends of the cabinet, and an air guide channel is formed between the two. Since the cross-sections of the air ducts where the heat exchanger and the fan are located are different, the airflow will be disturbed in the process of flowing from the air duct where the heat exchanger is located to the air duct where the fan is located, or from the air duct where the fan is located to the air duct where the heat exchanger is located. Not only is it easy to generate noise, but the disturbance will also reduce the flow efficiency of the airflow and reduce the ventilation volume in the air guide channel. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present application is to provide a guide ring and an air-conditioning cabinet, which can effectively improve the airflow state in the air guide channel, reduce the generation of turbulence, reduce aerodynamic noise, and increase ventilation volume.

[0005] In order to solve the above problems, the present application provides a guide ring, including a ring body and a guide member arranged on the inner circumferential wall of the ring body, the guide member protrudes from the inner circumferential wall of the ring body toward the center of the ring body, and the guide member extends along the axial direction of the ring body to guide the fluid flowing through the guide ring.

[0006] Preferably, the flow guide member is a flow guide rib, and a plurality of flow guide ribs are arranged at intervals along the circumference of the ring body.

[0007] Preferably, the length of the flow guide along the axial direction of the ring body is equal to or smaller than the axial length of the ring body.

[0008] Preferably, the axial length of the flow guide is L, and the axial length of the ring body is H, wherein L=(80%-100%)H.

[0009] Preferably, in the direction from the first end to the second end of the ring body, the flow guide member extends in both the axial direction and the circumferential direction of the ring body.

[0010] Preferably, the guide member forms an angle α with the normal line in the axial direction, wherein 0<α≤30°.

[0011] Preferably, the guide member is a straight plate; or, the guide member is a curved plate; or, the guide member comprises a straight plate section and a curved plate section, and the straight plate section and the curved plate section are arranged in sequence along the axial direction; or, the guide member is an airfoil rib.

[0012] Preferably, the cross-sectional area of ​​the ring body increases along the direction from the first end to the second end.

[0013] Preferably, when the flow guide member is a bent plate, the flow guide member is arc-shaped.

[0014] According to another aspect of the present application, an air conditioning cabinet is provided, comprising an air guide ring, which is the air guide ring described above.

[0015] Preferably, the air conditioning cabinet comprises an air supply section, a flow guide section and a heat exchange section which are connected in sequence, and the flow guide ring is arranged in the flow guide section.

[0016] Preferably, the air supply section includes a fan, the heat exchange section includes a heat exchanger, and the guide ring is arranged between the fan and the heat exchanger.

[0017] Preferably, when the ring body is in a trumpet-shaped shape, the expanded end of the ring body faces the fan, and the contracted end of the ring body faces the heat exchanger.

[0018] Preferably, the channel cross-section of the air supply section is circular, and the channel cross-section of the heat exchange section is polygonal.

[0019] Preferably, the channel cross-section of the heat exchange section is square.

[0020] Preferably, the axial length of the heat exchanger is LQ, and the axial length of the ring body is H, wherein H=(10%-25%)LQ.

[0021] The guide ring provided by the present application comprises a ring body and a guide member arranged on the inner peripheral wall of the ring body, the guide member protrudes from the inner peripheral wall of the ring body toward the center of the ring body, and the guide member extends along the axial direction of the ring body to guide the fluid flowing through the guide ring. The guide ring is provided with a guide member extending along the axial direction on the inner peripheral wall, and the fluid flowing through the guide ring can be guided and regularized by the guide member, thereby effectively improving the flow state of the airflow in the air guide channel, reducing the irregular disturbance of the airflow, reducing the generation of turbulence, reducing aerodynamic noise, and increasing the ventilation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural diagram of a guide ring according to an embodiment of the present application;

[0023] Figure 2 This is a structural diagram of the guide ring of an embodiment of the present application;

[0024] Figure 3 for Figure 2 The cross-sectional structure diagram of the guide ring in the AA direction;

[0025] Figure 4 A three-dimensional structural diagram of an air conditioning cabinet according to an embodiment of the present application;

[0026] Figure 5 A cross-sectional structural diagram of an air conditioning cabinet according to an embodiment of the present application;

[0027] Figure 6 This is a dimension structure diagram of an air conditioning cabinet according to an embodiment of the present application;

[0028] Figure 7 This is an air flow diagram of the air conditioner cabinet in the embodiment of the present application when it is in the upper air outlet state;

[0029] Figure 8 This is an air flow diagram of the air conditioner cabinet in the embodiment of the present application when it is in the downward air outlet state;

[0030] Fig. 9 This is a three-dimensional structural diagram of the heat exchanger of the air-conditioning cabinet according to an embodiment of the present application.

[0031] The reference numerals are as follows:

[0032] 1. Ring body; 2. Flow guide; 3. Air supply section; 4. Flow guide section; 5. Heat exchange section; 6. Fan; 7. Heat exchanger; 8. Top cover; 9. Base; 10. Upper air outlet; 11. Lower air outlet. DETAILED DESCRIPTION

[0033] See also Figures 1 to 9 As shown, according to an embodiment of the present application, the guide ring includes a ring body 1 and a guide member 2 arranged on the inner peripheral wall of the ring body 1, the guide member 2 protrudes from the inner peripheral wall of the ring body 1 toward the center of the ring body 1, and the guide member 2 extends along the axial direction of the ring body 1 to guide the fluid flowing through the guide ring. For the convenience of description, the following embodiments are described by taking the fluid as airflow as an example.

[0034] The guide ring is provided with an axially extending guide member 2 on the inner circumferential wall of the ring body 1, which can guide and regularize the airflow passing through the guide ring, thereby effectively improving the flow state of the airflow in the air guide channel, reducing irregular disturbances of the airflow, reducing the generation of turbulence, reducing aerodynamic noise, and increasing ventilation volume.

[0035] The guide member 2 is, for example, a convex strip structure, and the length extension direction of the convex strip is the axial direction of the ring body 1, so that the airflow flowing axially through the ring body 1 can be effectively guided and regularized, so that the stability of the airflow is increased, the probability of the occurrence of chaotic vortices is reduced, and the flow efficiency of the airflow is improved. The structure of the convex strip can be multiple, and the convex strips are evenly spaced and arranged in the circumferential direction of the ring body 1, so as to better ensure the flow uniformity of the airflow and achieve a more excellent airflow guidance effect.

[0036] In this embodiment, the guide member 2 is a guide rib, and a plurality of guide ribs are arranged at intervals along the circumference of the ring body 1. Preferably, the guide ribs are arranged at even intervals along the circumference of the ring body 1. Setting the guide member 2 as a rib structure can standardize the thickness and shape of the guide member 2, so that the flow resistance of the guide member 2 to the airflow is reduced, the guiding effect is increased, the flow effect of the airflow is better, and it is less likely to cause turbulence.

[0037] If the number of guide ribs is too small, the rectification constraint on the airflow is low. Increasing the number of ribs can improve the rectification effect, reduce turbulent flow, and increase air volume. However, if the number of ribs is too large, it will occupy the flow area in the guide ring. Therefore, it is necessary to reasonably control the number of ribs so that the ribs' guiding effect and the impact on the flow area can achieve a better balance. Preferably, the number of guide ribs is 10 to 30.

[0038] After the guide ribs are arranged on the inner circumferential wall of the ring body 1 of the guide ring, due to the guiding effect of the guide ribs, the airflow flowing through the guide ring is almost parallel to the center arc line of the ribs, and as the number of ribs N increases, the tendency of the airflow being parallel to the center arc line becomes greater, but the increase in the number of ribs affects the ventilation volume. Therefore, the optimal value of N is taken as 16, which can not only ensure the restraining effect of the guide ribs on the airflow and improve the stability of the airflow flow, but also avoid the increase of the guide ribs on the ventilation volume. The greater the impact, ensure the airflow efficiency of the guide ring.

[0039] The length of the flow guide member 2 along the axial direction of the ring body is equal to or less than the axial length of the ring body 1 .

[0040] In this embodiment, the axial length of the flow guide 2 is L, and the axial length of the ring body 1 is H, where L = (80% to 100%) H. By limiting the relationship between the axial length of the flow guide 2 and the axial length of the ring body 1 to the above relationship, it is possible to avoid the flow guide 2 being too short, which will cause the airflow to quickly enter a relatively turbulent state after leaving the flow guide 2, resulting in an insignificant flow guiding effect, and also to avoid the flow guide 2 being longer than the ring body 1, which will cause inconvenience in processing the flow guide 2 and adversely affect the subsequent installation of the flow guide ring.

[0041] In the direction from the first end to the second end of the ring body 1 , the flow guide member 2 extends in both the axial direction and the circumferential direction of the ring body 1 .

[0042] In this embodiment, the guide member 2 does not extend in a direction parallel to the central axis of the ring body 1, but will be offset in the circumferential direction at the same time, so that the guide member 2 as a whole can form a certain inclined angle relative to the central axis, so that the airflow can form a certain spiral guide effect under the inclined guide effect of the guide member 2 when flowing through the guide member 2, so that the airflow has a pre-vortex when passing through the guide ring and entering the air duct, thereby increasing the work coefficient and reaction degree of the airflow. Preferably, the inclination direction of the ribs is consistent with the rotation direction of the airflow when entering the guide ring during the flow process, so that the guiding effect of the guide member 2 is more obvious, so that the airflow can be divided by the flow channel between the guide members 2, and it is not easy to generate a large vortex, which not only has low loss, but also can better increase the air volume.

[0043] The airflow in the air duct in the cabinet is a rotating flow, which has an angle with the axial direction, so the arrangement of the air guide 2 should cater to the angle of the airflow, thereby reducing the wind resistance of the air guide 2 itself to the flow and reducing the air volume loss. Preferably, in this embodiment, the air guide 2 has an angle α with the normal line in the axial direction, where 0<α≤30°.

[0044] In other embodiments, the axial extension direction of the flow guide member 2 may also be parallel to the central axis of the ring body 1 .

[0045] In one embodiment, the guide member 2 is a straight plate or a curved plate. Preferably, the guide member 2 is an arc-shaped curved plate, which can use the arc-shaped guide surface to form a spiral guide effect on the flow of airflow, so that the airflow can form a spiral flow effect when it flows out of the guide ring.

[0046] In another embodiment, the guide member 2 includes a straight plate segment and a curved plate segment, and the straight plate segment and the curved plate segment are arranged in sequence along the axial direction. Through the combination of the straight plate segment and the curved plate segment, the role of the front guide vane can be exerted to apply a pre-rotation effect to the downstream airflow, eliminate the vortex of the airflow coming from the upstream, and better meet the flow requirements of the airflow.

[0047] In another embodiment, the guide member 2 is an airfoil-shaped rib, so as to further reduce the resistance generated to the air flowing through the guide ring.

[0048] When the guide member 2 is a guide rib, the guide rib includes two guide surfaces and an inner side surface and an outer side surface located between the two guide surfaces, wherein the inner side surface is arranged on the inner circumferential wall of the ring body 1 of the guide ring, and the outer side surface is offset and parallel to the wall surface of the inner circumferential wall of the ring body 1 of the guide ring, or forms a streamlined structure that can reduce wind resistance.

[0049] In one embodiment, the cross-sectional area of ​​the ring body 1 increases along the direction from the first end to the second end.

[0050] Preferably, the ring body 1 is in a bell-mouth shape.

[0051] See also Figures 3 to 9 As shown, according to an embodiment of the present application, the air-conditioning cabinet includes a guide ring, which is the guide ring mentioned above.

[0052] The air conditioner cabinet includes a shell, which includes an air supply section 3, a guide section 4 and a heat exchange section 5 connected in sequence, and the guide ring is arranged in the guide section 4. An upper air outlet is provided at the top of the air supply section 3, and a lower air outlet is provided on the heat exchange section 5, so that multiple air outlets can be formed at the upper and lower ends of the air duct, which is convenient for the air conditioner cabinet to form a reversible air supply duct.

[0053] The air supply section 3 includes a fan 6 , the heat exchange section 5 includes a heat exchanger 7 , and the guide ring is arranged between the fan 6 and the heat exchanger 7 .

[0054] The fan 6 is, for example, a counter-rotating axial flow fan, which includes two axial flow blades and two axial flow fans, one axial flow fan corresponding to one axial flow blade, the axes of the two axial flow blades coincide, the air supply directions are the same, the rotation directions are opposite, and the number of blades is prime to each other.

[0055] The fan 6 and the heat exchanger 7 are distributed above and below the air duct. In the heating mode, the hot air is blown out from the lower air outlet, close to the ground, and fully exchanges heat with the cold air; in the cooling mode, the cold air is blown out from the upper air outlet, close to the roof, and fully exchanges heat with the hot air, thereby making the room temperature distribution more even and improving user comfort.

[0056] In this embodiment, the cross section of the heat exchanger 7 is G-shaped and is located between the upper air outlet and the lower air outlet. Due to the bending process requirements of the heat exchanger 7, it cannot be completely folded into a cylindrical shape, so it can be folded into a G shape, which is easier to implement in terms of process and also ensures the heat exchange effect.

[0057] Preferably, the channel cross-section of the air supply section 3 is circular, and the channel cross-section of the heat exchange section 5 is polygonal. Preferably, the channel cross-section of the heat exchange section 5 is square. For this structure, since the circular channel above is different in shape from the square channel below, it is not easy to transition. The circular channel is large and the square channel is small. The sudden change in cross-section is easy to cause eddy current and other losses. After adopting the guide ring with the guide member 2 in the present application, the guide member 2 can be used to guide and regularize the airflow, and the variable cross-section structure design of the guide ring itself can be used to smoothly connect the ports of different sizes and shapes. At the same time, it can guide and converge the airflow, avoid or reduce the eddy current loss caused by the sudden change in cross-section, and the airflow noise.

[0058] Preferably, when the ring body 1 is in a trumpet shape, the expanded end of the ring body 1 faces the fan 6, and the contracted end of the ring body 1 faces the heat exchanger 7, so that it can adapt to the size relationship between the cross-section of the air supply section 3 and the cross-section of the heat exchange section 5, further improving the guide ring's guide effect on the airflow.

[0059] The guide ring can adjust the diameter of the portion in contact with the heat exchanger 7 within an appropriate range, thereby more effectively controlling the scaling ratio at both ends, so that the flow efficiency of the airflow can be further improved.

[0060] Preferably, the axial length of the heat exchanger 7 is LQ, and the axial length of the ring body 1 is H, where H = (10% to 25%) LQ. Generally speaking, the longer the heat exchanger 7 is, the greater the required heat exchange capacity is, and the required air volume is also greater, and the flow through the guide ring is also increased accordingly, so it is necessary to increase the radius and length to better guide the flow and avoid the decrease of the fan efficiency.

[0061] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0062] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. An air conditioning cabinet, characterized in that: The flow guide ring comprises a ring body (1) and a flow guide member (2) arranged on the inner peripheral wall of the ring body (1), the flow guide member (2) protruding from the inner peripheral wall of the ring body (1) toward the center of the ring body (1), and the flow guide member (2) extending along the axial direction of the ring body (1) to guide the fluid flowing through the flow guide ring; the flow guide member (2) is a flow guide rib, a plurality of the flow guide ribs are arranged at intervals along the circumference of the ring body (1), and the number of the flow guide members (2) is 10 to 30; The air conditioning cabinet comprises an air supply section (3), a flow guide section (4) and a heat exchange section (5) which are connected in sequence, the flow guide ring is arranged in the flow guide section (4), the air supply section (3) comprises a fan (6), the heat exchange section (5) comprises a heat exchanger (7), and the flow guide ring is arranged between the fan (6) and the heat exchanger (7).

2. The air conditioning cabinet according to claim 1, characterized in that: The length of the flow guide (2) along the axial direction of the ring body is equal to or less than the axial length of the ring body (1).

3. The air conditioning cabinet according to claim 2, characterized in that: The axial length of the flow guide (2) is L, and the axial length of the ring body (1) is H, wherein L=(80% to 100%)H.

4. The air conditioning cabinet according to claim 1, characterized in that: In the direction from the first end to the second end of the ring body (1), the flow guide (2) extends simultaneously in the axial direction and the circumferential direction of the ring body (1).

5. The air conditioning cabinet according to claim 4, characterized in that: The guide member (2) has an angle α with the normal line in the axial direction, wherein 0<α≤30°.

6. The air conditioning cabinet according to claim 1 or 5, characterized in that: The guide member (2) is a straight plate; or, the guide member (2) is a curved plate; or, the guide member (2) comprises a straight plate section and a curved plate section, the straight plate section and the curved plate section being arranged in sequence along the axial direction; or, the guide member (2) is an airfoil rib.

7. The air conditioning cabinet according to claim 1, characterized in that: Along the direction from the first end to the second end, the cross-sectional area of ​​the ring body (1) increases gradually.

8. The air conditioning cabinet according to claim 6, characterized in that: When the flow guide (2) is a bent plate, the flow guide (2) is arc-shaped.

9. The air conditioning cabinet according to claim 1, characterized in that: When the ring body (1) is in a bell-mouth shape, the expanded end of the ring body (1) faces the fan (6), and the contracted end of the ring body (1) faces the heat exchanger (7).

10. The air conditioning cabinet according to claim 1, characterized in that: The channel cross-section of the air supply section (3) is circular, and the channel cross-section of the heat exchange section (5) is polygonal.

11. The air conditioning cabinet according to claim 10, characterized in that: The channel cross section of the heat exchange section (5) is square.

12. The air conditioning cabinet according to claim 1, characterized in that: The axial length of the heat exchanger (7) is LQ, and the axial length of the ring body (1) is H, wherein H=(10% to 25%) LQ.

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