Jet type air sweeping device, cabinet type air conditioner, inter-column air conditioner and wall-mounted air conditioner

Abstract

The invention belongs to the field of energy conservation and emission reduction of air conditioners, and discloses a jet type air sweeper, a cabinet type air conditioner, an inter-row air conditioner and a wall-mounted air conditioner. The jet type air sweeper comprises a fixed shell, a rotary barrel shell, a motor, a round-to-square structure and a square-to-round structure, and the fixed shell is arranged outside the rotary barrel shell; the motor can drive the rotary barrel shell to rotate relative to the fixed shell, the rotary barrel shell comprises a bent pipe structure, the section of the bent pipe structure is rectangular, a plurality of air guide pieces are arranged in the bent pipe structure, a plurality of independent air channels are formed among the air guide pieces, and the jet type air sweeper has the advantage of being small in size. Rotary air flow sweeping can be achieved, the rotary coverage is wider, and the cold air influence area is wider.

Description

Technical Field

[0001] The present invention relates to the field of air conditioner energy conservation and emission reduction, and particularly relates to a jet sweeper, a cabinet air conditioner, a row air conditioner, and a wall-mounted air conditioner. Background Art

[0002] With the large-scale development of 5G networks, the hot-spot problems in the centralized computer rooms of base station BBUs have become increasingly prominent. Such computer rooms usually have multiple rows of BBU cabinets and battery cabinets. Different from the core computer rooms, due to limited conditions, such computer rooms generally do not have air flow channels for cold and heat isolation. The heat dissipation of equipment mainly relies on the computer room air conditioner. Different from ordinary cabinet air conditioners, the computer room air conditioner uses an EC air wheel or an axial flow fan as the air supply component. Its advantages are large air volume and high sensible heat ratio, but the air outlet wind speed is not high and the air outlet direction is single. When it is applied in computer rooms with a high cabinet density, local overheating problems are likely to occur in areas far from the air conditioner and areas where the cold air of the air conditioner cannot reach directly, which directly affects the heat dissipation of the equipment in this area, causes overheat protection of the equipment, and accelerates the aging of the equipment.

[0003] Among the existing types of air conditioner air supply components, there is also the air supply method of a spherical nozzle. It is usually combined with a centrifugal fan and can project the high-speed air flow output by the centrifugal fan to a long-distance area in a jet manner. This method has the significant advantages of high wind speed, long range, and accurate range. However, due to the structural limitations of the spherical nozzle, its movement range is small, and the resulting air conditioner has a large volume and high noise. It is generally applied in large-space occasions such as factories and stations where there are no high requirements for equipment volume and noise, and it is difficult to be applied in computer rooms with limited conditions such as 5G BBUs.

[0004] It can be seen that for computer rooms with limited conditions such as ordinary 5G BBUs, especially computer rooms with a high cabinet density, the existing computer room air conditioners are difficult to fully meet the heat dissipation requirements of the computer room. The market urgently needs a jet air conditioner with a small volume, a large air volume, a high wind speed, a long range, and a wide sweeping range. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides a jet sweeper, a cabinet air conditioner, a row air conditioner, and a wall-mounted air conditioner, which can reciprocally sweep the generated cold air in a fan-shaped angle at high-speed air flow to the far and near areas in the room, so that the coverage range of the cold air at the air outlet is wider and farther, and the air temperature in the far and near areas is more evenly distributed. The specific technical solutions are as follows.

[0006] A jet-type air sweeper, comprising a rotating barrel housing, a motor, a circular-to-square structure and a square-to-circular structure. The motor can drive the rotating barrel housing to rotate. The rotating barrel housing includes a bent pipe structure, and the cross-section of the bent pipe structure is rectangular. Both the square-to-circular structure and the circular-to-square structure have a circular end and a square end. The circular ends of the square-to-circular structure and the circular-to-square structure are rotatably connected. The square end of the circular-to-square structure is fixedly connected to the bent pipe structure or integrally formed with the bent pipe structure. A plurality of air guiding vanes are arranged in the bent pipe structure, and the plurality of air guiding vanes divide the bent pipe structure into a plurality of independent air ducts.

[0007] Further, the rotating barrel housing includes an outer shell, and the cross-section of the outer shell is a centrally symmetric figure and is arranged outside the bent pipe structure.

[0008] Further, it further includes a fixed housing, the fixed housing is arranged outside the rotating barrel housing, and the square end of the square-to-circular structure is fixedly connected to the fixed housing or a air supply duct.

[0009] Further, the bent pipe structure and the outer shell are an integrally formed structure.

[0010] Further, one side of the rotating barrel housing away from the circular-to-square structure has an end face, and a fixed connection seat for connecting the motor drive shaft of the motor is arranged at the center of the end face.

[0011] Further, the motor is arranged on one side of the fixed housing away from the circular-to-square structure, and the motor drive shaft is connected to the fixed connection seat.

[0012] Further, the circular end of the square-to-circular structure is sleeved with the circular end of the circular-to-square structure, and a clamping block ring is further arranged on the circular end of the square-to-circular structure, and the circular end of the circular-to-square structure abuts against the clamping block ring.

[0013] Further, the rotation angle range of the rotating barrel housing is 0 - 90° or 0 - 180°.

[0014] A cabinet air conditioner, comprising a composite centrifugal fan, an evaporator, an air supply duct and the above-mentioned jet-type air sweeper. The composite centrifugal fan is composed of at least two centrifugal fans. The air outlet of the air supply duct is connected to the jet-type air sweeper upwards. An air outlet frame is arranged above the front of the cabinet air conditioner, and the jet-type air sweeper can shoot out air flow towards the outside of the air outlet frame.

[0015] Further, it includes two jet-type air sweepers symmetrically arranged on the cabinet air conditioner and two composite centrifugal fans connected thereto.

[0016] A row air conditioner comprises a composite centrifugal fan, an evaporator, an air supply duct and the above-mentioned jet-type air sweeper, wherein the jet-type air sweeper is arranged horizontally.

[0017] Furthermore, the inter-row air conditioner comprises a compound centrifugal fan unit and two said jet-type air sweepers, the compound centrifugal fan unit is composed of two said compound centrifugal fans symmetrically connected in parallel, and the two said jet-type air sweepers are symmetrically arranged on both sides of the inter-row air conditioner; Alternatively, the two jet-type air sweepers are arranged at 90° on the inter-row air conditioner.

[0018] A wall-mounted air conditioner comprises a centrifugal fan, an evaporator and the above-mentioned jet-type air sweeper.

[0019] Furthermore, the centrifugal fan includes at least a first centrifugal fan and a second centrifugal fan, and the first centrifugal fan and the second centrifugal fan are independently arranged.

[0020] Furthermore, the first centrifugal fan and the second centrifugal fan are each connected to one of the above-mentioned jet air sweepers through an air supply duct, and the air outlets of the two air supply ducts are arranged in parallel in the horizontal direction.

[0021] Compared with the prior art, the jet air sweeper, cabinet air conditioner, row air conditioner and wall-mounted air conditioner have the following beneficial effects: By providing a rotating barrel shell that rotates relative to a fixed shell, the rotating barrel shell drives the round-to-square structure to rotate relative to the square-to-circular structure. The various components are cleverly connected to each other to achieve rotating sweeping airflow.

[0022] By setting a square curved pipe structure in the rotating barrel shell and dividing the curved pipe structure into several independent air ducts with smaller and more uniform cross-sectional areas, the size of the curved pipe structure is smaller and the sweeping distance of the cold air is longer. Even if the distance from the jet sweeper is far away, it can still be fully cooled, the cold air affects a wider area, and the cooling coverage area is larger.

[0023] By rationally arranging the number of cabinet air conditioners and row-to-row air conditioners, rows of cabinets and sweeping ranges, and equipping each cabinet air conditioner and row-to-row air conditioner with the above-mentioned jet-type air sweeper, the utilization rate of the air conditioning cooling capacity of the equipment in the computer room can be effectively improved, and the air in each area of ​​the computer room can be cooled quickly without dead ends. It can solve the hot spot problems that are prone to occur in the centralized computer room of the base station BBU, and realize a more reasonable and efficient airflow organization layout. It is not only suitable for the centralized computer room of the base station BBU, but also can be used in equipment rooms such as small data centers, which can greatly reduce costs.

[0024] The air outlet of the centrifugal fan is only connected to the square-to-round structure through a short curved air supply duct to form a wall-mounted air conditioner, enabling the cold air inside the centrifugal fan to enter the jet sweeper more directly, avoiding the use of complex air supply ducts, having a lower cost, and allowing the wall-mounted air conditioner to be hung on the side wall of the engine room or the wall, being more portable and convenient to place, move, or replace and repair according to the specific usage scenarios inside the computer room. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present invention.

[0027] Figure 1 It is a schematic diagram of the overall structure of the jet sweeper of the present invention; Figure 2 It is an exploded view of the jet sweeper of the present invention; Figure 3 It is an anatomical diagram of the internal structure of the jet sweeper of the present invention; Figure 4 For Figure 3 It is a partial enlarged schematic diagram at a; Figure 5 It is a schematic diagram of the external structure of the 3HP cabinet air conditioner of the present invention; Figure 6 It is a schematic diagram of the internal structure of the 3HP cabinet air conditioner of the present invention; Figure 7 It is an exploded view of the internal structure of the 3HP cabinet air conditioner of the present invention; Figure 8 It is a schematic diagram of the internal structure of the front of the 5HP cabinet air conditioner of the present invention; Figure 9 It is a schematic diagram of the internal structure of the front of the 8HP cabinet air conditioner of the present invention; Figure 10 It is a schematic diagram of the overall structure of the row-level air conditioner of the present invention; Figure 11 It is a schematic diagram of the internal structure of the row-level air conditioner of the present invention; Figure 12 This is an exploded view of the internal structure of the in-row air conditioner of the present invention; Figure 13 This is a schematic diagram of the application scenario of the in-row air conditioner of the present invention; Figure 14 This is a schematic diagram of the overall structure of the wall-mounted air conditioner of the present invention; Figure 15 This is a schematic diagram of the internal structure of the wall-mounted air conditioner of the present invention; Figure 16 This is an exploded view of the internal structure of the wall-mounted air conditioner of the present invention; In the figure: 1 - fixed housing, 2 - rotating barrel housing, 21 - outer shell, 211 - end face, 2111 - fixed connection seat, 2112 - motor drive shaft, 22 - elbow structure, 221 - air deflector, 222 - independent air duct, 3 - motor, 4 - square-to-round structure, 41 - snap ring, 5 - round-to-square structure, 6 - cabinet, 71 - composite centrifugal fan, 711 - fan air inlet, 712 - fan air outlet, 713 - centrifugal fan, 7131 - first centrifugal fan, 7132 - second centrifugal fan, 72 - evaporator, 73 - air supply duct, 74 - air hood, 75 - air inlet grille, 76 - protective housing, 77 - air outlet frame. Detailed implementation manners

[0028] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0030] Embodiment 1 A jet sweeper includes a fixed housing 1, a rotating barrel housing 2, a motor 3, a round-to-square structure 5, and a square-to-round structure 4. Refer to the attached Figures 1-3, the shape of the fixed housing 1 is "C", the fixed housing 1 is arranged outside the rotating barrel housing 2, the rotating barrel housing 2 includes a housing 21 and a bent pipe structure 22, the cross-section of the housing 21 is a centrally symmetric figure and is arranged outside the bent pipe structure 22, the cross-section of the bent pipe structure 22 is rectangular, both the square-to-round structure 4 and the round-to-square structure 5 have a circular end and a square end, the square end of the square-to-round structure 4 is fixedly connected to the fixed housing 1 or the air supply duct 73 described below, the square end of the round-to-square structure 5 is fixedly connected to the bent pipe structure 22 or integrally formed with the bent pipe structure 22, a plurality of air guiding vanes 221 are arranged in the bent pipe structure 22, and the plurality of air guiding vanes 221 divide the bent pipe structure 22 into a plurality of independent air ducts 222. A plurality of air outlets are arranged at the ends of the plurality of independent air ducts 222. The circular ends of the square-to-round structure 4 and the round-to-square structure 5 are rotatably connected, and the motor 3 can drive the rotating barrel housing 2 and the round-to-square structure 5 to rotate synchronously relative to the fixed housing 1 around the central axis of the square-to-round structure 4.

[0031] Specifically, for the jet sweeping device provided in this embodiment, the cross-section of the square end of the square-to-round structure 4 is a square with a side width of 150 mm, the diameter of the cross-section of the circular end of the round-to-square structure 5 is 170 mm, the cross-sections of the square end of the round-to-square structure 5 and the bent pipe structure 22 are both squares with a side width of 150 mm, and the turning angle of the bent pipe structure 22 is 90°, that is, the central axis of the air outlet of the bent pipe structure 22 is vertically intersecting with the central axis of the air inlet of the bent pipe structure 22.

[0032] According to the traditional design, in order to achieve jet sweeping, the air duct connected to the square-to-round structure 4 can directly adopt a cylindrical structure. This embodiment does not adopt the traditional design because if a circular pipe is directly used for turning, it will cause the size of the jet sweeping device to be too large and cannot meet the design requirements with limited size.

[0033] The design standard of air ducts in the industry is that the turning radius of the air duct should not be less than 1.5 times the diameter of the pipe, otherwise it will cause a large pressure difference resistance, which will in turn lead to a large air loss. If a circular pipe design is directly adopted, the outer diameter of the circular pipe is taken as 170 mm and the turning ratio is taken as 1.5 times. In order to achieve a 90° turn of the air duct, the distance from the outside of the air inlet of the circular pipe to the air outlet should be designed as 340 mm. This size is too large, which will cause the thickness of the air-conditioning cabinet to greatly exceed the industry standard and is difficult to be recognized by the market.

[0034] Due to the special structure of the circular duct, considering the eddy current damage, it is generally not suitable to set air guide vanes inside it. In this embodiment, the direct turning structure of the circular duct is innovatively designed as a combination of a circular-to-square structure 5 and an elbow structure 22. Two air guide vanes 221 are arranged inside the elbow structure 22. The air guide vanes 221 are arranged concentrically with the center line of the elbow structure 22. The elbow structure 22 is equally divided into three independent air ducts 222 with a pipe diameter of 50 mm each. Along the radial direction, the turning radii of the three independent air ducts 222 increase in sequence. Among them, the ratio of the turning radius of the innermost independent air duct 222 to the air duct diameter is 1.5 times. The result of the above improved design is that the distance from the outer side of the circular end of the circular-to-square structure 5 to the air outlet of the elbow structure 22 is 220 mm, which is 120 mm less than the traditional design, greatly reducing the thickness of the air-conditioning cabinet, meeting the requirements of industry standards, and can be flexibly applied to computer rooms with narrow spaces.

[0035] It should be noted that the setting of the air guide vanes 221 needs to comprehensively consider the influence on the air duct. The air guide vanes 221 in the elbow structure 22 can be two or more. See the appendix Figure 3 , setting multiple air guide vanes 221 can reduce the diameter of the independent air duct 222, and then reduce the size of the elbow structure 22. However, increasing the air guide vanes 221 will also increase the frictional resistance of the air duct structure. The air guide vanes 221 can be arranged at equal intervals or non-equal intervals; the air guide vanes 221 can be arranged concentrically or non-concentrically. Using non-concentric circles can make the air outlets of the independent air ducts 222 arranged at intervals, so that the amount of air entrained during the forward movement of the jet can be increased.

[0036] The outer shell 21 is arranged outside the elbow structure 22. The elbow structure 22 and the outer shell 21 are an integrally formed structure. The cross-section of the outer shell 21 is designed as a cylindrical structure or other centrally symmetric structures. The purpose is that the outer shell 21 with a centrally symmetric cross-section can decompose the impact force from the air flow, making the stability and balance of the rotating barrel shell 2 better.

[0037] Since the rotating barrel shell 2 needs to be driven by the motor 3 to rotate, the motor 3 is arranged on the side of the fixed housing 1 away from the circular-to-square structure 5. The motor drive shaft 2112 is connected to the rotating barrel shell 2. See the appendix Figure 2 , the outer shell 21 of the rotating barrel shell 2 is preferably a cylindrical structure. The cylindrical outer shell 21 is more beautiful and is conducive to setting an end face 211 on the side of the rotating barrel shell 2 away from the circular-to-square structure 5, so as to facilitate setting a fixed connection seat 2111 for connecting the motor drive shaft 2112 at the center of the end face 211. The motor drive shaft 2112 is connected to the fixed connection seat 2111 to drive the rotating barrel shell 2 to rotate. The motor 3 is preferably a DC reduction motor.

[0038] The circular end of the square-to-round structure 4 and the circular end of the round-to-square structure 5 are in a socket connection structure. The circular end of the square-to-round structure 4 can be inserted into the circular end of the round-to-square structure 5. Since the circular end of the square-to-round structure 4 provides a supporting effect on the circular end of the round-to-square structure 5, the rotation of the rotating barrel shell 2 can be achieved by the ultra-low speed operation of the reduction motor. The circular end of the square-to-round structure 4 is provided with a chuck ring 41. See Appendix Figure 4 , and the function of the chuck ring 41 is for sealing and limiting. The circular end of the round-to-square structure 5 abuts against the chuck ring 41. There is a 1-2 mm gap between the inner wall of the circular end of the round-to-square structure 5 and the outer wall of the circular end of the square-to-round structure 4, and lubricating materials or bearings can be filled or installed in the gap.

[0039] The rotation angle range of the rotating barrel shell 2 is 0-90° or 0-180°, that is, the rotation angle range of the air outlet is 0-90° or 0-180°. The specific scanning angle range can be selectively set according to the actual situation of the computer room.

[0040] Embodiment 2 A cabinet air conditioner. See Appendix Figures 5-7 , including a composite centrifugal fan 71, an evaporator 72, a ventilation duct 73 and the jet sweeper. The composite centrifugal fan 71 is composed of at least two centrifugal fans 713. The jet sweeper is connected to the end of the ventilation duct 73. The air outlet of the ventilation duct 73 is connected to the jet sweeper upward. An air outlet frame 77 is provided above the front of the cabinet air conditioner. The jet sweeper can shoot air flow outside the air outlet frame 77.

[0041] The cabinet air conditioner is installed in the computer room and can sweep air to the cabinets in the computer room. Conventional air conditioners do not have the function of rotating air outlet and can only blow air along a fixed direction. In this embodiment, the rotation angle of the jet sweeper is preferably 60 degrees, and it can rotate 30 degrees on both the left and right sides, which can ensure that the jet sweeper continuously rotates and blows air within the range of the air outlet frame 77. After the cold air flow is ejected, it moves reciprocally in a horizontal fan angle, with a larger cooling coverage range and better cooling effect.

[0042] Since the front of the cabinet air conditioner has a larger area than the two sides, the evaporator 72 is installed on the front of the cabinet air conditioner, and a larger cooling area can be arranged, with higher refrigeration efficiency per unit time. The evaporator 72 can also be installed on both sides of the cabinet air conditioner according to the actual use situation of the computer room.

[0043] The composite centrifugal fan 71 described in this example is composed of the parallel combination of the air outlets of three centrifugal fans 713. The cross-section of its air outlet 712 is square, with a side width of 150 mm. The design of the centrifugal fan 713 adopts the patented technology CN202421220890.2 of the inventor, and the volute profile design adopts the patented technology CN202410693653.6 of the inventor. Compared with the traditional centrifugal fan, it has the application advantages of small volume and low noise under the condition of meeting the air volume and air pressure.

[0044] The cabinet air conditioner provided in this embodiment has a refrigerating capacity of 3HP. The cabinet is 60 cm wide, 40 cm thick, and 180 cm high. The air outlet mode of the cabinet air conditioner is jet sweeping. The air outlet is square, with a side width of 150 mm, a rated jet speed of 15 m / s, and an air outlet rotation angle of 60°.

[0045] See Appendix Figure 7 , the air path of the 3HP cabinet air conditioner provided in this example is as follows: The indoor hot air forms cold air after passing through the evaporator 72 from the air inlet grille 75, enters the 3 fan inlets 711 of the composite centrifugal fan 71 through the air hood 74, is blown out from the fan outlet 712 at the top of the composite centrifugal fan 71, enters the bottom inlet of the jet sweeper through the air supply duct 73, and is horizontally ejected from the air outlet of the jet sweeper.

[0046] It should also be noted that according to different power and size specifications, the number of jet sweepers on the cabinet air conditioner can be one or more. The jet sweeper can be connected to a single centrifugal fan 713, or can be connected to a composite centrifugal fan 71 composed of multiple centrifugal fans 713 in parallel. For example, see Appendix Figure 8 , the 5HP cabinet air conditioner is provided with two jet sweepers, and the composite centrifugal fan 71 connected to each jet sweeper is composed of 2 centrifugal fans 713 combined; see Appendix Figure 9 , the 8HP jet sweeper is provided with two, and the composite centrifugal fan 71 connected to each jet sweeper is composed of 3 centrifugal fans 713 combined.

[0047] The following is the parameter table of the above three types of cabinet air conditioners:

[0048] Example Three This example provides an in-row air conditioner, which is applicable to the centralized computer room of 5G base station BBU equipment. In the existing centralized computer room of 5G base station BBU equipment, BBU equipment is generally placed in traditional 19-inch network cabinets. The common dimensions of the cabinets are: width 60 cm, thickness 60 cm, height 200 cm. Considering the convenience of maintenance, the ventilation of BBU equipment generally adopts the side-in and side-out method. It is placed horizontally in the network cabinet, and multiple BBU devices are stacked vertically at intervals. The air inlet and outlet channels of BBU equipment mainly rely on the interval gaps between the upper and lower BBU devices. As a result, there are air inlet and outlet airflows on both the front and rear sides of the BBU cabinet, and the airflows in the front and rear ventilation channels of the cabinet row are mixed.

[0049] Existing cabinet air conditioners are usually installed against the wall, and their air outlets generally can only face one of the channels in the front or rear of the BBU cabinet row. The in-row air conditioner provided in this embodiment can be set in the row, at the head or at the end of the cabinet row. There is a jet sweeper on each side of the top, which can simultaneously perform jet sweeping on the front and rear ventilation aisles of the cabinet row. Compared with traditional cabinet air conditioners, it is closer to the heat source, has a wider cooling range and higher cooling efficiency.

[0050] The in-row air conditioner provided in this embodiment has a cabinet width of 60 cm, a thickness of 40 cm, and a height of 200 cm. The refrigerating capacity of the cabinet is 4HP, including a compound centrifugal fan 71, an evaporator 72, a air supply duct 73 and two jet sweepers. See the appendix Figures 10-12 The jet sweeper is horizontally arranged and symmetrically arranged on both sides of the upper part of the in-row air conditioner. There are two compound centrifugal fans 71, each connected to an air supply duct 73. The end of each air supply duct 73 is connected to a jet sweeper, and the jet sweeper can rotate and sweep along the vertical plane.

[0051] On both sides inside the in-row air conditioner, a set of cooling components are symmetrically arranged respectively. The cooling components include a compound centrifugal fan 71 and an evaporator 72. Two compound centrifugal fans 71 are symmetrically connected in parallel to form a compound centrifugal fan group. The air path of each set of cooling components is: the indoor hot air forms cold air through the evaporator 72, enters the fan air inlet 711 of the compound centrifugal fan 71 through the air hood 74, is blown out from the fan air outlet 712 at the top of the compound centrifugal fan 71, turns horizontally through the air supply duct 73 and enters the jet sweeper inlet, and is vertically ejected from the air outlet of the jet sweeper.

[0052] As shown in the appendix Figure 13 Shown is an application scenario of the in-row air conditioner of the present invention. Multiple BBU cabinets 6 form a BBU cabinet row. The in-row air conditioner is set at the head of the BBU cabinet row, and can also be arranged in the middle or at the end of the row. The sweeping angle set for each jet sweeper is 90°, and it sweeps back and forth from the vertical to the horizontal direction.

[0053] It should also be noted that, depending on the layout of the cabinets in the machine room and the layout of the ventilation channels of the cabinet rows, the number of jet air sweepers on the inter-row air conditioner can be one, or two or more, and the relative position of the jet air sweepers is not limited to a symmetrical arrangement. For example: the inter-row air conditioner is arranged at the head or tail of the cabinet row, and the number of the jet air sweepers on the inter-row air conditioner is two, and the two jet air sweepers are arranged at 90 degrees on the inter-row air conditioner to sweep the horizontal and vertical ventilation channels respectively.

[0054] Embodiment 4 This embodiment provides a wall-mounted air conditioner, which is mainly used in a micro BBU centralized machine room. The micro BBU centralized machine room is usually a small cabin similar to a container, which is mainly used outdoors. Its typical size is 2-3 meters long, 1.2-1.5 meters wide, and 2 meters high. There are usually 2-4 19-inch network racks in the cabin, arranged in a row along the length of the cabin, and the BBU equipment and related supporting switching power supplies, batteries and other equipment are placed on the network racks.

[0055] See attached Figures 14-16 The wall-mounted air conditioner includes a centrifugal fan 713, an evaporator 72, a hood 74 and a jet sweeper. The centrifugal fan 713 absorbs indoor air when in operation, and the indoor air passes through the evaporator 72 and enters the cavity formed by the hood 74. The cooled indoor air enters the centrifugal fan 713, and the cold air inside the centrifugal fan 713 passes through the fan outlet 712 and the air supply duct 73 into the square-to-circular structure 4, and is finally ejected through the jet sweeper.

[0056] The centrifugal fan 713 at least includes a first centrifugal fan 7131 and a second centrifugal fan 7132. The first centrifugal fan 7131 and the second centrifugal fan 7132 are independently arranged. The first centrifugal fan 7131 and the second centrifugal fan 7132 are each connected to a jet air sweeper through an air supply duct 73. The air outlets of the two air supply ducts 73 are arranged in parallel in the horizontal direction and in opposite directions.

[0057] The air supply duct 73 is arranged above the volute of the centrifugal fan 713, so as to avoid the overlap of the air supply duct 73 and the volute of the centrifugal fan 713 in the length direction. Figure 15 Therefore, the length dimension of the wall-mounted air conditioner is slightly larger than the diameter dimension of the two centrifugal fans 713, and the structure is more compact and more space-saving.

[0058] See attached Figure 14, the wall-mounted air conditioner further includes a protective housing 76 which is fixedly connected to the fixed housing 1 outside the rotating barrel housing 2. The fixed housing 1 is provided with an opening window to facilitate the jet air sweeper to eject air flow within a certain angle range. The centrifugal fan 713, the evaporator 72 and the air hood 74 are arranged inside the protective housing 76. The protective housing 76 is provided with a hanging device, such as a hanging handle, for hanging the wall-mounted air conditioner on the side wall of the engine room or the wall, which is more portable, convenient to place, move or replace and repair according to the specific use scenario inside the engine room, can avoid using complex air supply ducts, has a lower cost, the wall-mounted air conditioner has a compact structure, a smaller overall size and less occupied space.

[0059] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jet air sweeper, characterized in that: It includes a rotating barrel shell, a motor, a round-to-square structure and a square-to-round structure. The motor can drive the rotating barrel shell to rotate. The rotating barrel shell includes a bent pipe structure. The cross-section of the bent pipe structure is rectangular. The square-to-round structure and the round-to-square structure both have a round end and a square end. The round end of the square-to-round structure and the round end of the round-to-square structure are rotatably connected. The square end of the round-to-square structure is fixedly connected to the bent pipe structure or is integrally formed with the bent pipe structure. A plurality of air guide plates are provided in the bent pipe structure. The plurality of air guide plates divide the bent pipe structure into a plurality of independent air ducts.

2. The jet air sweeper according to claim 1, characterized in that: The rotating barrel shell comprises an outer shell, the cross section of which is a centrally symmetrical figure and is arranged outside the curved pipe structure.

3. The jet air sweeper according to claim 1, characterized in that: It also includes a fixed shell, which is arranged on the outside of the rotating barrel shell, and the square end of the square-to-circle structure is fixedly connected to the fixed shell or the air supply duct.

4. The jet air sweeper according to claim 2, characterized in that: The bent pipe structure and the shell are an integrally formed structure.

5. The jet air sweeper according to claim 3, characterized in that: The rotating barrel shell has an end surface on one side away from the round-to-square structure, and a fixed connection seat connected to a motor drive shaft of the motor is provided at the center of the end surface.

6. The jet air sweeper according to claim 5, characterized in that: The motor is arranged on a side of the fixed housing away from the round-to-square structure, and the motor driving shaft is connected to the fixed connecting seat.

7. The jet air sweeper according to claim 1, characterized in that: The circular end of the square-to-circle structure is sleeved with the circular end of the circle-to-square structure. A clamping block ring is also provided on the circular end of the square-to-circle structure, and the circular end of the circle-to-square structure abuts against the clamping block ring.

8. The jet air sweeper according to claim 1, characterized in that: The rotation angle of the rotating barrel shell ranges from 0 to 90° or from 0 to 180°.

9. A cabinet air conditioner, characterized in that: It includes a composite centrifugal fan, an evaporator, an air supply duct and a jet-type air sweeper as described in any one of claims 1 to 8, wherein the composite centrifugal fan is composed of at least two centrifugal fans, the air outlet of the air supply duct is upwardly connected to the jet-type air sweeper, an air outlet frame is provided on the upper front of the cabinet air conditioner, and the jet-type air sweeper can eject airflow to the outside of the air outlet frame.

10. The cabinet air conditioner according to claim 9, characterized in that: It comprises two jet-type air sweepers symmetrically arranged on the cabinet air conditioner, and two composite centrifugal fans connected thereto.

11. A row-to-row air conditioner, characterized in that: It comprises a composite centrifugal fan, an evaporator, an air supply duct and a jet-type air sweeper as described in any one of claims 1 to 8, wherein the jet-type air sweeper is arranged horizontally.

12. The row air conditioner according to claim 11, characterized in that: The inter-row air conditioner comprises a compound centrifugal fan unit and two jet-type air sweepers, wherein the compound centrifugal fan unit is composed of two compound centrifugal fans symmetrically connected in parallel, and the two jet-type air sweepers are symmetrically arranged on both sides of the inter-row air conditioner; Alternatively, the two jet-type air sweepers are arranged at 90° on the inter-row air conditioner.

13. A wall-mounted air conditioner, characterized in that: The invention comprises a centrifugal fan, an evaporator and a jet air sweeper as claimed in any one of claims 1 to 8.

14. The wall-mounted air conditioner according to claim 13, characterized in that: The centrifugal fan includes at least a first centrifugal fan and a second centrifugal fan, and the first centrifugal fan and the second centrifugal fan are independently arranged.

15. The wall-mounted air conditioner according to claim 14, characterized in that: The first centrifugal fan and the second centrifugal fan are each connected to one of the jet-type air sweepers via an air supply duct, and the air outlets of the two air supply ducts are arranged in parallel in a horizontal direction.

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