Flow guide ring assembly and air conditioning unit

Abstract

The utility model provides a flow guide ring assembly and an air conditioning unit. The flow guide ring assembly comprises a body and a flow guide ring, wherein the body is provided with an air inlet; and the adjusting mechanism is arranged on the air inlet, and the adjusting mechanism can adjust the effective circulation area of the air inlet. According to the flow guide ring assembly and the air conditioning unit, the flow area of the air inlet is adjusted through the adjusting mechanism so as to adjust the air inlet amount of the air conditioning unit, and the situation that in the prior art, adjustment of a compressor and a draught fan cannot solve the influence of the low environment temperature on the air conditioning unit is avoided; the problems that return air carries liquid and refrigerating capacity is reduced can be avoided, the condensing temperature of the air conditioning unit is stabilized in a reasonable interval, stable operation and working efficiency of the air conditioning unit are guaranteed, the air conditioning unit can reliably work at the environment temperature of-50 DEG C, temperature reliability of electronic components is guaranteed, and the service life of the air conditioning unit is prolonged. And the safety and the reliability of the structure of the electronic component are further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air processing equipment, in particular to a guide ring component and an air conditioning unit. Background Art

[0002] With the development of the times and technological advancements, the integration of electronic components has become increasingly complex. This has significantly increased the heat flux density of these integrated components, further increasing power consumption. Even in cold winters, dedicated liquid-cooled air conditioning units are required to keep them cool. Air-cooled chillers are a common type of liquid-cooled air conditioning unit. Air-cooled chillers operate by utilizing the refrigerant to absorb and release heat during the evaporation and condensation processes. The refrigerant circulates in a closed loop, completing its cycle through compression and expansion. In the compressor, the refrigerant is compressed into a high-pressure gas, which then dissipates heat through the condenser, cooling it back to a liquid state. After being throttled by the expansion valve, the liquid refrigerant enters the evaporator, where it evaporates into a low-temperature, low-pressure gas. This gas absorbs the surrounding heat, lowering the temperature of the chilled water in the evaporator. The low-temperature chilled water is then delivered to the cold plate of the electronic components, dissipating heat from the components and preventing damage from overheating.

[0003] Air-cooled chillers use wind from the outdoor environment as a medium to dissipate heat from the condenser, thereby regulating the condensing pressure and condensing temperature. However, the adjustment of the compressor and fan is limited, and the temperature of the outdoor environment is uncontrollable. The outdoor temperature will change with the change of seasons. In areas with high altitudes or more remote areas, the ambient temperature in winter can reach -45°C or even lower. When the ambient temperature is too low, the frequency modulation of the compressor and fan cannot stabilize the condensing temperature, resulting in the condensing temperature being too low. A too low condensing temperature will reduce the throttling loss of the expansion valve, and the specific enthalpy of the refrigerant at the condenser outlet is very low, resulting in an increase in the cooling capacity that can be provided by unit mass of refrigerant. When the refrigerant flow rate and the cooling capacity demand of the unit remain unchanged, the cooling capacity stored in the refrigerant cannot be fully released, which can easily lead to incomplete evaporation of the refrigerant in the evaporator, causing the problem of liquid in the return air. It will also cause the high and low pressure difference of the system to decrease, and the ability to overcome the resistance of the throttling device to decrease. The refrigerant circulation flow of the air-conditioning unit will decrease, the cooling capacity will decrease, the ability of the refrigerant to transfer heat in the evaporator will decrease, and the evaporation will be insufficient. The compressor inlet pressure will also decrease, and the cold inside the system will not be dissipated in time. The refrigeration system will also have low pressure alarm shutdown, evaporator freezing, compressor liquid shock damage and other faults, resulting in unit failure and inability to effectively cool the equipment. In severe cases, it will cause electronic components to overheat and damage the equipment, causing great losses. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the adjustment of the compressor and the condensing fan cannot ensure the reliability and working efficiency of the air-conditioning unit, a guide ring assembly and an air-conditioning unit are provided for adjusting the air inlet area of ​​the air-conditioning unit to ensure the reliability and working efficiency of the air-conditioning unit.

[0005] A guide ring assembly, comprising:

[0006] a main body, the main body having an air inlet;

[0007] An adjusting mechanism is provided on the air inlet, and the adjusting mechanism is capable of adjusting the effective flow area of ​​the air inlet.

[0008] The adjustment mechanism includes an aperture arm, which is movably arranged on the body, and the adjustment mechanism has a avoiding state in which the aperture arm completely avoids the air inlet and a blocking state in which at least a portion of the aperture arm blocks the air inlet.

[0009] The number of the aperture arms is at least two, and all the aperture arms are distributed in a ring shape with the axis of the air inlet as the axis.

[0010] The adjustment mechanism further includes a driving member, which is connected to all the aperture arms and can drive the aperture arms to move.

[0011] The adjustment mechanism also includes a guide ring, which is rotatably arranged on the main body. The driving member and all the aperture arms are connected to the guide ring, and the driving member can simultaneously drive all the aperture arms to move through the guide ring.

[0012] The outer edge of the guide ring is provided with a first meshing tooth, and the driving member has a second meshing tooth, and the first meshing tooth and the second meshing tooth are meshed with each other.

[0013] The aperture arm is provided with a guide rod, the guide ring is provided with a slide groove, the guide rod is movably provided in the slide groove, and the length direction of the slide groove forms an angle with the tangential direction of the guide ring where the slide groove is located.

[0014] When the adjustment mechanism is in the blocking state, two adjacent aperture arms at least partially overlap; and / or, among the two adjacent aperture arms, a portion of the top surface of one aperture arm and a portion of the bottom surface of the other aperture arm are in contact with each other.

[0015] The adjustment mechanism further includes a fixing ring, which is arranged on the body, and the aperture arm is located between the fixing ring and the body.

[0016] The relationship between the effective flow area S1 of the air inlet when the regulating mechanism is in the avoidance state and the effective flow area S2 of the air inlet when the regulating mechanism is in the shielding state is: S2≤1 / 2S1.

[0017] An air conditioning unit comprises the above-mentioned guide ring assembly.

[0018] The guide ring assembly and air-conditioning unit provided by the present invention utilize an adjusting mechanism to adjust the flow area of ​​the air inlet to adjust the air intake volume of the air-conditioning unit, thereby avoiding the problem in the prior art that the adjustment of the compressor and the fan cannot solve the influence of the lower ambient temperature on the air-conditioning unit, and can also avoid the problem of liquid in the return air and the decrease in cooling capacity, so that the condensing temperature of the air-conditioning unit is stabilized within a reasonable range, ensuring the stable operation and working efficiency of the air-conditioning unit, enabling the air-conditioning unit to work reliably at an ambient temperature of -50°C, ensuring the temperature of the electronic components is reliable, and thus ensuring the safety and reliability of the structure where the electronic components are located. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a guide ring assembly provided in an embodiment of the present utility model;

[0020] Figure 2 An exploded view of the guide ring assembly provided in an embodiment of the present utility model;

[0021] Figure 3 This is a structural schematic diagram of the adjustment mechanism in the guide ring assembly provided by an embodiment of the present utility model in an avoidance state;

[0022] Figure 4 A schematic structural diagram of the process in which the adjustment mechanism of the guide ring assembly provided by an embodiment of the present utility model switches from the avoidance state to the shielding state;

[0023] Figure 5 This is a structural schematic diagram of the adjustment mechanism in the guide ring assembly provided by an embodiment of the present utility model in a shielded state;

[0024] Figure 6 A perspective view of an adjustment mechanism provided in an embodiment of the present utility model;

[0025] Figure 7 A schematic structural diagram of an aperture arm provided in an embodiment of the present utility model;

[0026] Figure 8 A cross-sectional view of an air conditioning unit provided by an embodiment of the present utility model;

[0027] In the picture:

[0028] 1. Main body; 11. Air inlet; 21. Aperture arm; 22. Driving member; 23. Guide ring; 24. Guide rod; 25. Slide groove; 26. Fixing ring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0032] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "set," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] Air-cooled chillers use wind from the outdoor environment as a medium to dissipate heat from the condenser, thereby regulating the condensing pressure and condensing temperature. However, the adjustment of the compressor and fan is limited, and the temperature of the outdoor environment is uncontrollable. The outdoor temperature will change with the change of seasons. In areas with high altitudes or more remote areas, the ambient temperature in winter can reach -45°C or even lower. When the ambient temperature is too low, the frequency modulation of the compressor and fan cannot stabilize the condensing temperature, resulting in the condensing temperature being too low. A too low condensing temperature will reduce the throttling loss of the expansion valve, and the specific enthalpy of the refrigerant at the condenser outlet is very low, resulting in an increase in the cooling capacity that can be provided by unit mass of refrigerant. When the refrigerant flow rate and the cooling capacity demand of the unit remain unchanged, the cooling capacity stored in the refrigerant cannot be fully released, which can easily lead to incomplete evaporation of the refrigerant in the evaporator, causing the problem of liquid in the return air. It will also cause the high and low pressure difference of the system to decrease, and the ability to overcome the resistance of the throttling device to decrease. The refrigerant circulation flow of the air-conditioning unit will decrease, the cooling capacity will decrease, the ability of the refrigerant to transfer heat in the evaporator will decrease, and the evaporation will be insufficient. The compressor inlet pressure will also decrease, and the cold inside the system will not be dissipated in time. The refrigeration system will also have low pressure alarm shutdown, evaporator freezing, compressor liquid shock damage and other faults, resulting in unit failure and inability to effectively cool the equipment. In severe cases, it will cause electronic components to overheat and damage the equipment, causing great losses.

[0035] To this end, this application provides a Figures 1 to 8 The guide ring assembly shown includes: a body 1 having an air inlet 11; and an adjustment mechanism disposed on the air inlet 11 and capable of adjusting the effective flow area of ​​the air inlet 11. The adjustment mechanism is used to adjust the flow area of ​​the air inlet 11 to adjust the air intake volume of the air conditioning unit. This avoids the problem of compressor and fan adjustment in the prior art being unable to address the impact of lower ambient temperatures on the air conditioning unit. It also avoids the problems of liquid carryover in the return air and reduced cooling capacity, stabilizes the condensing temperature of the air conditioning unit within a reasonable range, ensures the stable operation and working efficiency of the air conditioning unit, enables the air conditioning unit to operate reliably at an ambient temperature of -50°C, ensures the temperature of electronic components is stable, and thus ensures the safety and reliability of the structure where the electronic components are located.

[0036] During use, the guide ring assembly is set at the air inlet of the air conditioning unit. The air conditioning unit detects the condensing temperature T and the target value M. When the air conditioning unit has adjusted the compressor operating frequency and the condensing fan frequency, and the condensing temperature T is still less than the target value M, the control adjustment mechanism is controlled to adjust and reduce the effective flow area of ​​the air inlet 11, thereby reducing the air volume of the air conditioning unit. As the air volume decreases, the condensing temperature T will increase accordingly and eventually reach the target value M, ensuring the stable operation and working efficiency of the air conditioning unit, so that the air conditioning unit can operate reliably at an ambient temperature of -50°C, ensuring the temperature of the electronic components is reliable, and thus ensuring the safety and reliability of the structure where the electronic components are located. Among them, the effective flow area refers to the flow area that can be used for gas flow. Due to the adjustment of the adjustment mechanism, the maximum value of the effective flow area is the design area of ​​the air inlet 11.

[0037] In one embodiment, the adjustment mechanism includes an aperture arm 21, which is movably mounted on the body 1. The adjustment mechanism has a retracted state in which the aperture arm 21 completely avoids the air inlet 11, and a blocked state in which the aperture arm 21 at least partially blocks the air inlet 11. By shielding the air inlet 11 with the aperture arm 21, a portion of the designed area of ​​the air inlet 11 is directly blocked, preventing air from flowing through this portion of the air inlet 11, thereby adjusting the effective flow area of ​​the air inlet 11. When there is no need to adjust the air intake volume of the air-conditioning unit, the adjustment mechanism switches to the avoidance state. At this time, the aperture arm 21 is completely stored in the surrounding side of the air inlet 11 without affecting the flow area of ​​the air inlet 11. When the air intake volume of the air-conditioning unit needs to be adjusted, the adjustment mechanism gradually switches from the avoidance state to the blocking state, and the adjustment mechanism can stay at any position between the avoidance state and the blocking state, thereby achieving partial blocking of the air inlet 11, changing the effective flow area of ​​the air inlet 11, and achieving the purpose of adjusting the air intake volume.

[0038] There are at least two aperture arms 21, all of which are arranged in a ring about the axis of the air inlet 11. Using multiple aperture arms 21 to adjust the effective flow area of ​​the air inlet 11 from multiple directions can improve the accuracy of adjusting the effective flow area. Furthermore, during the adjustment process, the aperture arms 21 can gradually move from the edges of the air inlet 11 toward the center of the air inlet 11, thereby preferentially shielding the edges of the air inlet 11. This prevents the aperture arms 21 from directly blocking the center of the air inlet 11 and causing turbulence. This ensures that the air conditioning unit can continue to operate reliably during the adjustment process of the adjustment mechanism, thereby ensuring the reliability and safety of heat dissipation of electronic components.

[0039] The adjustment mechanism also includes a driving member 22, which is connected to all the aperture arms 21, and the driving member 22 can drive the aperture arms 21 to move. By driving the aperture arms 21 using the driving member 22, automatic adjustment of the adjustment mechanism can be achieved, and the driving accuracy of the driving member 22 can further improve the adjustment accuracy of the effective flow area.

[0040] The adjustment mechanism also includes a guide ring 23, which is rotatably arranged on the main body 1. The driving member 22 and all the aperture arms 21 are connected to the guide ring 23, and the driving member 22 can simultaneously drive all the aperture arms 21 to move through the guide ring 23. The guide ring 23 is used to enable the power of the driving member 22 to be transmitted to all the aperture arms 21 at the same time, ensuring that all the aperture arms 21 move synchronously at the same time, thereby ensuring the reliability of the adjustment mechanism and the reliability of the guide ring assembly.

[0041] Specifically, a first meshing tooth is provided on the outer edge of the guide ring 23, and the driving member 22 has a second meshing tooth. The first meshing tooth and the second meshing tooth are meshed with each other. The second meshing tooth is provided on the rotating shaft of the driving member 22. When the driving member 22 works, the rotating shaft rotates. The second meshing tooth can transmit the movement to the first meshing tooth through meshing, thereby causing the guide ring 23 to rotate. All aperture arms 21 are connected to the guide ring 23. The rotation of the guide ring 23 can drive all aperture arms 21 to move, ensuring that all aperture arms 21 move synchronously at the same time, thereby ensuring the reliability of the adjustment mechanism and the reliability of the guide ring assembly.

[0042] like Figure 2 As shown, a guide rod 24 is provided on the aperture arm 21, and a slide groove 25 is provided on the guide ring 23. The guide rod 24 is movably provided in the slide groove 25. The rotation of the guide ring 23 causes the slide groove 25 to move, and the guide rod 24 can be squeezed by the side wall of the slide groove 25 to force the aperture arm 21 to move. Since the aperture arm 21 is hinged to the body 1, the aperture arm 21 will rotate along the hinge axis, thereby achieving the purpose of the aperture arm 21 blocking the air inlet 11. In order to transmit the rotation of the guide ring 23 to the arc-shaped swing of the aperture arm 21, the length direction of the slide groove 25 and the tangential direction of the guide ring 23 where the slide groove 25 is located have an included angle. The slide groove 25 will rotate along the rotation of the guide ring 23, and the guide rod 24 will move along the length direction of the slide groove 25. At this time, the rotation of the slide groove 25 can be converted into an arc-shaped movement of the guide rod 24, thereby achieving the purpose of swinging the aperture arm 21.

[0043] When the adjustment mechanism is in the blocking state, the two adjacent aperture arms 21 at least partially overlap, and the partially overlapping aperture arms 21 are used to seal the two adjacent aperture arms 21. During the adjustment process, the aperture arms 21 gradually move from the edge of the air inlet 11 to the center of the air inlet 11. At this time, due to the partial overlap between the aperture arms 21, the effective flow area of ​​the air inlet 11 can be adjusted in a manner of gradually reducing the diameter, thereby improving the reliable adjustment of the effective flow area of ​​the air inlet 11 by the adjustment mechanism.

[0044] Among the two adjacent aperture arms 21, part of the top surface of one aperture arm 21 is in contact with part of the bottom surface of the other aperture arm 21, and the two adjacent aperture arms 21 are sealed by using the partially overlapping aperture arms 21. During the adjustment process, the aperture arm 21 gradually moves from the edge of the air inlet 11 to the center of the air inlet 11. At this time, due to the partial overlap between the aperture arms 21, the effective flow area of ​​the air inlet 11 can be adjusted in a manner of gradually reducing the diameter, thereby improving the reliable adjustment of the effective flow area of ​​the air inlet 11 by the adjustment mechanism.

[0045] The adjustment mechanism also includes a fixing ring 26, which is provided on the body 1, with the aperture arm 21 located between the fixing ring 26 and the body 1. The fixing ring 26 secures the aperture arm 21, allowing it to move along a set path, preventing the aperture arm 21 from separating from the guide ring body 1 and preventing the guide rod 24 of the aperture arm 21 from separating from the slide slot 25, thereby ensuring the structural reliability of the adjustment mechanism and the guide ring assembly.

[0046] Among them, the relationship between the effective flow area S1 of the air inlet 11 when the regulating mechanism is in the avoidance state and the effective flow area S2 of the air inlet 11 when the regulating mechanism is in the blocking state is: S2≤1 / 2S1, to avoid S2 being too large to reliably adjust the air intake volume of the air-conditioning unit, and also to avoid S2 being too small to ensure the minimum air intake volume required by the air-conditioning unit.

[0047] An air conditioning unit comprises the above-mentioned guide ring assembly.

[0048] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A guide ring assembly, characterized in that: include: A body (1), the body (1) having an air inlet (11); An adjusting mechanism is provided on the air inlet (11), and the adjusting mechanism is capable of adjusting the effective flow area of ​​the air inlet (11).

2. The guide ring assembly according to claim 1, characterized in that: The adjustment mechanism comprises an aperture arm (21), the aperture arm (21) being movably arranged on the body (1), and the adjustment mechanism having a avoiding state in which the aperture arm (21) completely avoids the air inlet (11) and a blocking state in which at least a portion of the aperture arm (21) blocks the air inlet (11).

3. The guide ring assembly according to claim 2, characterized in that: The number of the aperture arms (21) is at least two, and all the aperture arms (21) are distributed in a ring shape with the axis of the air inlet (11) as the axis.

4. The guide ring assembly according to claim 3, characterized in that: The adjustment mechanism further comprises a driving member (22), the driving member (22) being connected to all the aperture arms (21), and the driving member (22) being capable of driving the aperture arms (21) to move.

5. The guide ring assembly according to claim 4, characterized in that: The adjustment mechanism further includes a guide ring (23), which is rotatably arranged on the body (1), the driving member (22) and all the aperture arms (21) are connected to the guide ring (23), and the driving member (22) can simultaneously drive all the aperture arms (21) to move through the guide ring (23).

6. The guide ring assembly according to claim 5, characterized in that: The outer edge of the guide ring (23) is provided with first meshing teeth, the driving member (22) has second meshing teeth, and the first meshing teeth and the second meshing teeth are meshed with each other.

7. The guide ring assembly according to claim 5, characterized in that: A guide rod (24) is provided on the aperture arm (21), a slide groove (25) is provided on the guide ring (23), the guide rod (24) is movably provided in the slide groove (25), and the length direction of the slide groove (25) and the tangential direction of the guide ring (23) where the slide groove (25) is located have an included angle.

8. The guide ring assembly according to claim 3, characterized in that: When the adjustment mechanism is in the shielding state, two adjacent aperture arms (21) at least partially overlap; and / or, of the two adjacent aperture arms (21), a portion of the top surface of one aperture arm (21) and a portion of the bottom surface of the other aperture arm (21) are in contact with each other.

9. The guide ring assembly according to claim 2, characterized in that: The adjustment mechanism further comprises a fixing ring (26), the fixing ring (26) being arranged on the body (1), and the aperture arm (21) being located between the fixing ring (26) and the body (1).

10. The guide ring assembly according to claim 2, characterized in that: The relationship between the effective flow area S1 of the air inlet (11) when the regulating mechanism is in the avoidance state and the effective flow area S2 of the air inlet (11) when the regulating mechanism is in the shielding state is: S2≤1 / 2S1.

11. An air conditioning unit, characterized in that: The invention comprises the guide ring assembly according to any one of claims 1 to 10.

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