Air conditioner main unit with air outlet direction of heat exchanger orthogonal to air suction direction of fan and equipment platform of air conditioner main unit

Abstract

The utility model relates to the technical field of environmental protection and energy conservation, and discloses an air conditioner host with the air outlet direction of a heat exchanger orthogonal to the air suction direction of a fan and an equipment platform of the air conditioner host. An airflow volute chamber between an air outlet of the heat exchanger and an air suction port of the fan is constructed through orthogonal arrangement of the air suction port direction of the fan of the air conditioner host and the air outlet direction of an external heat exchanger; the air flow volute chamber is converted into a buffer space cavity for speed reduction, pressure boosting and reorganization of air outlet air flow of the external heat exchanger; the longitudinal depth of the air conditioner main unit is reduced, the thickness of the main unit is further reduced, the air conditioner main unit becomes a structure intensive type air conditioner main unit, and the air conditioner main unit can be installed on an equipment platform in a wall-attached and floor mode or in a suspended mode or installed compared with an adjacent external facade, and the actual occupied area of an air inlet and outlet channel outside a traditional main unit is greatly reduced. Structural fusion, wind path fusion and energy coupling of the air conditioner host and the outer vertical face of the equipment platform are promoted.

Description

Technical Field

[0001] This utility model relates to the field of green energy-saving technology, and in particular to an air conditioning unit and its equipment platform in which the air outlet direction of the heat exchanger is orthogonal to the air intake direction of the fan. Background Technology

[0002] like Figure 1-2 As shown, existing patents such as the one for a vertically arranged air conditioning unit and its equipment platform (application number 202310972409.9) and the one for a sawtooth-shaped finned tube heat exchanger assembly and its air conditioning unit and equipment platform (application number 202311012468.8) creatively propose the technical concept of air conditioning unit coupling and energy coupling with the external facade decoration structure. They employ explicit external heat exchanger inlet and outlet duct technology with the air conditioning unit built-in, and a finned tube external heat exchanger fin planer to perform tiered planing and low-speed air distribution technology on the inlet airflow. This fundamentally restructures the internal structure of the air conditioning unit and the structural relationship between the air conditioning unit and the external facade of the equipment platform, exhibiting outstanding substantive features and significant progress.

[0003] The aforementioned prior art adopts an aerodynamic layout with medium-speed air intake on the upper middle part of the short side of the air conditioning unit and high-speed air exhaust at the bottom, incorporating the main sections of the air intake and exhaust channels of the finned tube heat exchanger assembly into the interior of the air conditioning unit. This utility model uses a copper tube horizontal V-shaped finned tube heat exchanger as the basic unit of the air conditioning unit's finned tube heat exchanger assembly. Within the limited space of the air conditioning unit, copper tube horizontal V-shaped finned tube heat exchangers are continuously arranged parallel to the air intake surface of the air conditioning unit. A large area of ​​ventilation surface for the finned tube heat exchanger assembly is obtained by unfolding along the air intake surface of the copper tube horizontal V-shaped finned tube heat exchanger. A huge area of ​​finned heat transfer surface is then obtained by further unfolding on the ventilation surface of the large area of ​​the finned tube heat exchanger assembly.

[0004] The external airflow of this utility model air conditioning unit enters the unit at a medium speed of about 4m / s. Inside the unit, the airflow is continuously and progressively planed by multiple fin cutters, slowing down and dispersing the main airflow. It then passes through the finned tube heat exchanger assembly, which has a large total ventilation surface and a huge total heat exchange area, at low speed and with low resistance for heat exchange. After heat exchange, the airflow flows into the negative pressure chamber of the heat exchanger assembly and converges towards the fan inlet under the negative pressure of the fan. After being accelerated and pressurized by the fan, the airflow enters the vertical (or lateral) exhaust chamber and is finally discharged at a high speed of about 7m / s from the bottom (or side) horizontal exhaust chamber, where it is diffused and diluted into the ambient atmosphere.

[0005] This utility model effectively constructs a high-efficiency heat exchange airflow structure for the finned tube heat exchanger assembly of the air conditioning unit, improves the volumetric energy density of the air conditioning unit, enhances the lateral energy line density of the equipment platform, and promotes the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the exterior of the equipment platform.

[0006] Following the aforementioned group of utility models, during the ongoing research and development of airflow coupling and energy coupling technology between the air conditioning unit and the exterior decorative structure, the built-in technology for making the inlet and outlet air ducts of the external heat exchanger visible, and the technology for using a fin planer to perform tiered planing of the inlet airflow and low-speed air distribution in the zigzag-shaped finned tube external heat exchanger assembly, the patent application for an air conditioning unit and its equipment platform with an exhaust air bag (application number 202410858895.6) further optimized the "exhaust air bag" technology. Its key innovations are:

[0007] The air conditioning unit is equipped with an exhaust chamber and a fan. The exhaust port of the exhaust chamber is connected to an exhaust section, and the exhaust chamber and the exhaust section constitute an exhaust air bag. The exhaust section is a narrowing exhaust section with a gradually decreasing cross-sectional area, so that the cross-sectional area of ​​the collected airflow in the exhaust chamber is significantly larger than the cross-sectional area of ​​the exhaust port of the exhaust chamber. Further, the first exhaust port of the exhaust section is a wedge-shaped exhaust port. The wedge-shaped exhaust port is a vertical strip exhaust port or a horizontal strip exhaust port. Further, the first exhaust port of the exhaust section is set at an angle away from the air conditioning unit where the exhaust air bag is set. Further, the exhaust port of the exhaust chamber is equipped with a perforated plate for throttling the exhaust airflow. Preferably, the perforated plate is a metal wire mesh.

[0008] The aforementioned air conditioning unit technology using exhaust airbags is an extension and innovation of three major technologies: "airflow coupling and energy coupling technology, visible built-in inlet and outlet air duct technology, and fin planer-stepped airflow deceleration and distribution." Its outstanding substantive features and significant technological advancements are: providing space for exhaust airflow deceleration, pressure boosting, noise reduction, and reorganization; optimizing the structure of the air conditioning unit; and creating conditions for integrating the airflow structure of the air conditioning unit into the equipment platform louvers.

[0009] However, in promoting the application of the above three technologies, there are still some important process and technical issues.

[0010] For example, the air conditioning unit itself becomes larger: the aforementioned patents all change the traditional external heat exchanger airflow routing of the air conditioning unit from being located outside the unit to being located inside the unit, eliminating the air inlet ducts reserved on both sides and the rear of the traditional air conditioning unit on the equipment platform. This effectively solves the structural coupling, airflow coupling, and energy coupling problems between the external heat exchanger and the exterior decorative structure of the equipment platform. Overall, the aforementioned patents have improved the operating efficiency of the external heat exchanger airflow. From the perspective of the actual space occupied by the "air conditioning unit + air inlet and outlet ducts", the aforementioned patents have indeed reduced the floor space of the air conditioning unit. However, after the air inlet and outlet routing of the air conditioning unit is changed from the traditional external to the internal, the visual effect of the structure and size of the new air conditioning unit becomes "very large". The root causes are mainly twofold: First, the change from the "hidden" structure of the external heat exchanger's air duct to the "visible" structure of the new machine body has resulted in an increase in the main unit's structure and size. Second, in order to prevent the built-in external heat exchanger's air duct from having high airflow velocity, increased resistance, and increased fan energy consumption, air conditioning system designers and structural designers have chosen to minimize or even maximize the cross-sectional area of ​​the built-in air duct. This has further led to the "large" amount of internal space occupied by the built-in external heat exchanger's inlet and outlet air ducts.

[0011] In the existing technology of an air conditioning unit and its equipment platform with vertically arranged fans (application number 202310972409.9), the total volume of the air inlet duct before the external heat exchanger, the vertical exhaust duct after the external heat exchanger, and the horizontal exhaust duct of the air conditioning unit is even greater than the volume of the air conditioning unit body with the traditional external air inlet and exhaust ducts.

[0012] How to significantly reduce the structure and volume of the air conditioning unit's built-in external heat exchanger's inlet and outlet air ducts while maintaining the advantages of the visible built-in external heat exchanger's inlet and outlet air duct technology and the characteristics of the deceleration and air distribution technology of the zigzag external heat exchanger fin planer's stepped planing of the inlet airflow in the practice of promoting the coupling of the air conditioning unit's external facade structure, airflow path, and energy, is a major and complex task. Utility Model Content

[0013] To solve the aforementioned problems in the prior art, this utility model provides an air conditioning unit in which the heat exchanger outlet direction is orthogonal to the fan intake direction.

[0014] Another objective of this invention is to provide a device platform.

[0015] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0016] An air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction includes a casing, a negative pressure chamber, an exhaust chamber, a compressor chamber, an external heat exchanger, and a fan.

[0017] The negative pressure chamber and the exhaust chamber are arranged side by side; the compressor chamber is located outside the first back plate of the negative pressure chamber and / or the exhaust chamber;

[0018] The direction of the air inlet of the fan is orthogonal or nearly orthogonal to the main air outlet of the external heat exchanger, thus creating an airflow vortex chamber between the air outlet of the external heat exchanger and the air inlet of the fan in the negative pressure chamber.

[0019] Preferably, the exhaust port of the exhaust chamber is located on the third back plate of the exhaust chamber on the same side as the main air inlet of the air inlet chamber of the housing, and the fan in the exhaust chamber is located away from its exhaust port;

[0020] Preferably, the exhaust port of the exhaust chamber is a vertical strip-shaped exhaust port.

[0021] Preferably, the exhaust port of the exhaust chamber is located on the second back plate of the exhaust chamber opposite to the air inlet of the exhaust chamber, and a small-area exhaust port is provided; preferably, the small-area exhaust port is located at the bottom of the second back plate, and the small-area exhaust port is a horizontal strip exhaust port; preferably, the small-area exhaust port is located in the upper middle part of the second back plate, and the small-area exhaust port is a rectangular or diamond-shaped exhaust port; preferably, the small-area exhaust port is located in the horizontal middle part of the second back plate, and the small-area exhaust port is a vertical strip exhaust port.

[0022] Preferably, the area of ​​the exhaust vent is 10% to 30% of the area of ​​the second back panel.

[0023] Furthermore, the fan is a centrifugal fan; preferably, a backward centrifugal fan is used; the area of ​​the exhaust surface on the outer periphery of the fan impeller is 2 to 8 times the area of ​​the fan's intake port.

[0024] Furthermore, the external heat exchanger is disposed in the air inlet cavity of the shell;

[0025] The external heat exchanger consists of heat exchange tubes and metal fins sleeved on the heat exchange tubes;

[0026] The heat exchange tube is a heat exchange pipeline that carries refrigerant transport and heat exchange, and is selected from any one of copper tube, aluminum tube, iron tube, titanium tube, stainless steel tube, and alloy tube;

[0027] The structure of the external heat exchanger includes a heat exchange tube type I finned tube heat exchanger, a heat exchange tube type L finned tube heat exchanger, and heat exchange tube type M finned tube heat exchanger, heat exchange tube type N finned tube heat exchanger, and heat exchange tube type V finned tube heat exchanger, which are composed of heat exchange tube type I finned tube heat exchangers.

[0028] Furthermore, the heat exchange tube V-shaped finned tube heat exchanger is an asymmetric heat exchange tube V-shaped finned tube heat exchanger with unequal lengths on both sides, consisting of two heat exchange tube I-shaped finned tube heat exchangers of different lengths.

[0029] Among them, the long heat exchange tube type I finned tube heat exchanger is located near the outer side plate of the shell; the short heat exchange tube type I finned tube heat exchanger is located near the side plate of the exhaust cavity.

[0030] Furthermore, the air inlet cavity of the shell is also provided with an air supply strip; the air supply strip is located on the outer side plate of the shell near the long heat exchange tube I-type finned tube heat exchanger.

[0031] Furthermore, the air intake and air guide panel of the fan are wedged into the negative pressure chamber, and part of the space of the compressor chamber is wedged into the negative pressure chamber.

[0032] Furthermore, the heat exchange tube type I finned tube heat exchanger is disposed in the air inlet cavity of the shell, and one side of the external heat exchanger is close to the main air inlet and forms a certain angle α with the main air inlet surface of the air inlet cavity of the shell.

[0033] Preferably, the included angle α is an acute angle.

[0034] More preferably, the included angle α is 15°-70°.

[0035] Furthermore, the air inlet cavity of the housing is also provided with a second air inlet; a throttling panel is provided at the second air inlet;

[0036] The throttling panel is provided with areas of different throttling resistance;

[0037] In area A, which is closest to the fan intake and has the smallest airflow turning angle, the permeability of the corresponding throttling panel is 20%-40%, and the throttling resistance is the greatest. As the distance between the heat exchange area on the finned tube heat exchanger and the fan intake gradually increases, and the airflow turning angle increases, the permeability of the throttling panel in the corresponding section increases accordingly. The permeability of the throttling panels in areas B, C, and D increases to 40%-60%, 60%-70%, and 70%-80%, respectively.

[0038] Preferably, the fan includes an impeller support, an impeller, and an impeller rear cover. The impeller support is connected to the impeller through the impeller rear cover and installed at the air inlet of the exhaust chamber. The axial air inlet surface of the fan overlaps with the air inlet of the exhaust chamber, and the radial air outlet surface of the fan is disposed in the exhaust chamber. The area of ​​the radial air outlet surface of the fan is larger than the area of ​​the axial air inlet surface.

[0039] Preferably, the compressor cavity is equipped with a refrigerant circuit assembly including a compressor, a gas-liquid separator, an expansion valve, and an electrical box.

[0040] Preferably, the negative pressure chamber is a cavity with a unidirectional or multidirectional air inlet, and is composed of a side plate, a top plate, and a bottom plate, including the shell.

[0041] The second air inlet is a filler air strip slot.

[0042] An equipment platform, wherein the equipment platform is equipped with the aforementioned air conditioning unit.

[0043] Furthermore, the exterior facade of the equipment platform is provided with a vertical strip exhaust vent on at least one side, and the exterior facade is also provided with a main decorative structure; the vertical strip exhaust vent of the air conditioning unit points to the vertical strip exhaust vent on one side of the exterior facade.

[0044] Furthermore, the vertical strip exhaust vent of the equipment platform includes a metal mesh and / or a group of metal columns;

[0045] The main decorative structure of the equipment platform includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0046] Furthermore, a rectangular, rhomboid, or vertical strip-shaped small-area exhaust vent is provided in the middle or lower part of the outer facade of the equipment platform, and a main decorative structure is also provided in the outer facade; the rectangular, rhomboid, or vertical strip-shaped small-area exhaust vent on the second back plate of the exhaust cavity faces the rectangular, rhomboid, or vertical strip-shaped small-area exhaust vent in the middle or lower part of the outer facade.

[0047] Furthermore, the small-area exhaust vents on the facade include metal mesh, metal column groups, and / or openwork patterns; the main decorative structure includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0048] Furthermore, a horizontal strip-shaped exhaust vent is provided at the bottom of the outer facade of the equipment platform, and a main decorative structure is also provided on the outer facade; the exhaust vent on the second back plate of the exhaust cavity faces the horizontal strip-shaped exhaust vent at the bottom of the outer facade.

[0049] Furthermore, the horizontal strip-shaped exhaust vents on the facade include metal mesh and / or metal column groups;

[0050] The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0051] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0052] ①Structurally integrated air conditioning unit

[0053] While inheriting the advantages of the built-in external heat exchanger duct technology and the characteristics of the fin planer's stepped planing of the airflow to slow down and distribute the air, the air conditioner's fan intake direction is orthogonal to the external heat exchanger's outlet direction to construct an airflow vortex between the heat exchanger outlet and the fan intake. This airflow vortex is then transformed into a structural and functional conversion zone on the external heat exchanger's airflow path, becoming a buffer space chamber for slowing down, pressurizing, and reorganizing the external heat exchanger's outlet airflow.

[0054] By setting up an airflow vortex chamber and innovating the spatial relationship between the air inlet cavity, negative pressure cavity, and exhaust cavity, the vertical exhaust cavity of the air conditioning unit in the background technology is eliminated, reducing the longitudinal depth of the air conditioning unit and further reducing the thickness of the unit, making it a structurally compact air conditioning unit. It can be wall-mounted, suspended, or installed adjacent to the exterior facade on the equipment platform, and there is no need to reserve external airflow ducts, which greatly reduces the actual footprint of the external airflow ducts of traditional units.

[0055] ② High-level protection for external heat exchangers

[0056] Traditional air conditioning units, due to their multi-sided and large-area air intake, make it difficult to install effective finned tube safety protection devices. Finned tube heat exchangers often suffer from fin collapse and regional heat exchange function degradation caused by external force during manufacturing, transportation, and installation.

[0057] This utility model sets the external heat exchanger of the finned tube of the air conditioner unit inside the heat exchanger shell. The shell provides full-coverage high-level protection for the finned tube heat exchanger, eliminating fin collapse and regional heat exchange function attenuation.

[0058] This invention aims to overcome the problem that traditional air conditioning units are difficult to install air intake filtration devices due to multi-sided and large-area air intake. By concentrating the air intake of the external heat exchanger, filters can be centrally installed at the air intake to intercept mosquitoes and suspended particles in the air, and the filters are easy to clean.

[0059] ③ The air conditioning system achieves high energy efficiency and low noise.

[0060] This utility model adjusts the local resistance of airflow in various areas of the heat exchanger outlet section by innovating the inlet cross-sectional size, finned tube angle, and airflow inlet and outlet fin gap angle, so as to equalize the total resistance and achieve uniform ventilation and heat exchange in the finned tube heat exchanger.

[0061] This invention employs a low static pressure backward centrifugal fan, and by placing the fan deep within the main unit structure, it achieves low external noise and minimal environmental impact.

[0062] The air conditioning unit of this utility model uses a backward centrifugal fan to efficiently connect the air path of the external heat exchanger in the equipment platform scenario. It solves the problems of traditional side-discharge air conditioning units where the air outlet is obstructed by the external decorative structure of the equipment platform, the exhaust static pressure increases, the air volume decreases, and some of the reduced air volume is short-circuited by airflow recirculation, which leads to serious deterioration of air conditioning performance. This enables the actual field performance of the air conditioning system to reach the level of laboratory data, and the function of the air conditioning system as a "heat transporter" is fully realized.

[0063] ④ Promote the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the building facade.

[0064] This utility model features a compact air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction. It is vertically expanded and horizontally compressed, allowing it to be installed on a wall-mounted platform. It occupies very little of the building's open space and minimizes its impact on the exterior decoration of the platform. It is suitable for embedded equipment platforms in residential buildings.

[0065] Because the air inlet and outlet of the air conditioning unit are set on the same plane, this utility model is particularly suitable for installation on the side wall of the balcony of school student dormitories, company employee dormitories, and LOFT apartments. When running, the air inlet of the air conditioning unit directly draws in fresh air from the exterior facade, and the exhaust airflow after heat exchange is emitted and diffused into the ambient atmosphere along the side wall of the balcony. The main air inlet and exhaust airflow do not pass through the main space of the balcony (equipment platform) and do not affect the function of the balcony. It is also conducive to the structural coupling, airflow coupling and energy coupling between the air conditioning unit and the exterior facade of apartment buildings.

[0066] This invention promotes the structural integration, airflow integration, and energy coupling of the air conditioning unit and the exterior facade of the equipment platform. Attached Figure Description

[0067] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0068] Figure 1 This is a schematic diagram of the structure of an air conditioning unit with a vertically arranged fan, which is part of the background technology.

[0069] Figure 2 This is a schematic diagram of the structure of an air conditioning unit with an exhaust air bag in the background technology;

[0070] Figure 3 This is a schematic diagram of the impeller of a backward-curved external rotor centrifugal fan;

[0071] Figure 4It is a backward-curved external rotor centrifugal fan module;

[0072] Figure 5 This is a three-dimensional perspective view of the compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonal, as described in Example 1.

[0073] Figure 6 This is a vertical sectional view of the compact air conditioning unit in Embodiment 1, where the direction of the fan intake is orthogonal to the direction of the heat exchanger outlet.

[0074] Figure 7 This is a top view of the compact air conditioning unit in Embodiment 1, where the direction of the fan intake is orthogonal to the direction of the heat exchanger outlet.

[0075] Figure 8 This is a vertical sectional view of the airflow operation of a compact air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction, as shown in Example 1.

[0076] Figure 9 This is a top view of the airflow operation of the air conditioning unit in Example 1, where the heat exchanger outlet direction is orthogonal to the fan intake direction;

[0077] Figure 10 This is a partially enlarged view of the airflow characteristics of the V-shaped finned tube heat exchanger in Example 1;

[0078] Figure 11 This is a three-dimensional sectional view (rear view) of the compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonally arranged in the unbalanced design of Example 2;

[0079] Figure 12 This is a three-dimensional sectional view (front) of the compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonally arranged in the unbalanced design of Example 2;

[0080] Figure 13 This is a top view of a compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonally set in the unbalanced design of Example 2.

[0081] Figure 14 This is a vertical cross-sectional view (rear view) of the airflow of the compact air conditioning unit with the fan intake direction orthogonal to the heat exchanger outlet direction in the unbalanced design of Example 2.

[0082] Figure 15 This is a top view of the airflow of the compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonally set in the unbalanced design of Example 2.

[0083] Figure 16 This is a vertical sectional view of the compact air conditioning unit in Embodiment 3, in which the heat exchanger outlet direction of a single fan is orthogonally arranged to the air intake direction of the fan.

[0084] Figure 17 Example 4 is an air conditioning unit with a single-plate flat finned tube (i.e., heat exchange tube type I finned tube heat exchanger) structure for the external heat exchanger.

[0085] Figure 18 This is a top view of the air conditioning unit structure of Example 5, where the external heat exchanger adopts an L-shaped structure (i.e., an L-shaped finned tube heat exchanger).

[0086] Figure 19 This is a schematic diagram of the throttling panel arranged in sections on the outside of the L-shaped finned tube heat exchanger (i.e., the L-shaped finned tube heat exchanger) in Embodiment 5.

[0087] Figure 20 This is a top view of the air conditioning unit structure in Embodiment 6, where the heat exchanger outlet direction is orthogonal to the fan intake direction.

[0088] Figure 21 This is a vertical sectional view of the air conditioning unit structure in Embodiment 6, where the heat exchanger outlet direction is orthogonal to the fan intake direction.

[0089] Figure 22 This is a top view of the airflow operation of the air conditioning unit, in Example 6, where the heat exchanger outlet direction is orthogonal to the fan intake direction.

[0090] Figure 23 This is a vertical sectional view of the airflow operation of the air conditioning unit, in Example 6, where the heat exchanger outlet direction is orthogonal to the fan intake direction.

[0091] Figure 24 This is a schematic diagram of the equipment platform for the three-chamber household-coupled central air conditioning unit used in Embodiment 7;

[0092] Figure 25 This is a top view of the airflow operation of the equipment platform of the three-chamber household-coupled central air conditioning unit in Example 7. Detailed Implementation

[0093] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments without creative effort are within the scope of protection of this application.

[0094] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0095] Example 1

[0096] like Figure 3-10 As shown, this embodiment discloses an air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction, including a housing 1, a negative pressure chamber 2, an exhaust chamber 3, a compressor chamber 4, an external heat exchanger 5, and a fan 6;

[0097] The negative pressure chamber 2 and the exhaust chamber 3 are arranged side by side; the exhaust port 31 of the exhaust chamber 3 is arranged side by side on the same side as the main air inlet 71 of the air inlet chamber 7 of the housing 1, that is, the exhaust port 31 of the exhaust chamber 3 is located on the third back plate 32 of the exhaust chamber on the same side as the main air inlet 71 of the air inlet chamber 7 of the housing 1.

[0098] The air intake direction of the fan 6 is orthogonal or nearly orthogonal to the main air outlet direction of the external heat exchanger 5, thus creating an airflow vortex between the air outlet of the external heat exchanger 5 and the air intake of the fan 6 in the negative pressure chamber 2.

[0099] In the exhaust chamber 3, the fan 6 is located at the end away from its exhaust port 31; the air outlet of the fan 6 is directly opposite the exhaust port 31 of the exhaust chamber 3; the exhaust port 31 of the exhaust chamber 3 is a vertical strip exhaust port.

[0100] The compressor chamber 4 is located outside the first back plate 21 of the negative pressure chamber 2 and the exhaust chamber 3.

[0101] The fan 6 is a centrifugal fan; preferably, a backward centrifugal fan is adopted; the area of ​​the exhaust surface on the outer periphery of the impeller of the fan 6 is 2 to 8 times the area of ​​the air inlet of the fan 6.

[0102] The air conditioning unit in this embodiment is equipped with two vertically arranged fans 6.

[0103] An external heat exchanger 5 is disposed in the air inlet cavity 7 of the shell 1; one side of the external heat exchanger 5 is close to the main air inlet 71;

[0104] The external heat exchanger 5 consists of a heat exchange tube 502 and metal fins 501 sleeved on the heat exchange tube 502; the heat exchange tube 502, as a heat exchange pipeline that carries refrigerant transport and heat exchange, can be made of copper.

[0105] External heat exchanger 5 is a V-shaped finned tube heat exchanger.

[0106] The fan 6 includes an impeller support 601, an impeller 602, and an impeller rear cover 603. The impeller support 601 is connected to the impeller 602 through the impeller rear cover 603 and installed at the air inlet of the exhaust chamber 3. The axial air inlet surface of the fan 6 overlaps with the air inlet of the exhaust chamber, and the radial air exhaust surface of the fan 6 is set inside the exhaust chamber. The area of ​​the radial air exhaust surface of the fan 6 is larger than the area of ​​the axial air inlet surface.

[0107] like Figure 3-4 As shown, this embodiment adopts the innovative concept of air conditioning unit and equipment platform exterior decoration structure air duct coupling and energy coupling. While maintaining the technical advantages of visible built-in external heat exchanger air duct and the technical characteristics of the zigzag external heat exchanger assembly fin planer to decelerate and distribute airflow in stages, it reduces the structure and volume of the air inlet and outlet air duct of the external heat exchanger 5 built into the air conditioning unit.

[0108] By setting the air outlet direction of the external heat exchanger 5 of the air conditioning unit orthogonally or nearly orthogonally to the air intake direction of the fan, an airflow vortex is constructed between the air outlet of the external heat exchanger 5 and the air intake of the fan 6.

[0109] In this embodiment, a backward centrifugal fan is used as the power source for the airflow path of the external heat exchanger 5.

[0110] Among all types of fans, the backward centrifugal fan has the highest energy efficiency. However, structurally, its impeller outer diameter φ1 is about 1.5 times its air inlet diameter φ2, and during installation, an additional air outlet space of φ1×0.3 needs to be reserved around the impeller. Therefore, the actual space occupied by the impeller outer circumference is about twice the diameter of its air inlet.

[0111] In this embodiment, the air conditioning unit is orthogonally or nearly orthogonally positioned to the air outlet direction of the heat exchanger. Due to the structural and operational characteristics of the backward centrifugal fan, the cross-sectional area of ​​the heat exchanger outlet and the air inlet area of ​​the fan 6 are significantly larger than the area of ​​the air inlet of the backward centrifugal fan body. As a result, the space between the air outlet of the external heat exchanger 5 and the air inlet of the backward centrifugal fan becomes a buffer airflow vortex in the air path of the external heat exchanger 5, a structural conversion zone and a functional conversion zone in the air path, and a buffer chamber for deceleration, pressurization, adjustment, and reorganization of the airflow at the outlet of the external heat exchanger 5.

[0112] In this embodiment, the air inlet chamber 7 and the negative pressure chamber 2 of the air conditioning unit are connected in series, and then connected in series with the exhaust chamber 3 via the fan 6. Structurally, they are arranged horizontally side by side to form... Type of air duct; the air inlet and air outlet of the external heat exchanger 5 are set on the same side and left and right respectively; in the exhaust cavity 3, the circumferential surface of the impeller of the backward centrifugal fan is directly opposite the exhaust outlet of the exhaust cavity 3;

[0113] This embodiment eliminates the vertical exhaust cavity 3 of the existing air conditioning unit by setting up an airflow vortex chamber and adjusting the spatial relationship between the air inlet cavity 7, the negative pressure cavity 2 and the exhaust cavity 3, thereby reducing the longitudinal depth of the air conditioning unit and further reducing the thickness of the air conditioning unit, making it possible to have a structurally compact wall-mounted air conditioning unit.

[0114] like Figure 5-7 As shown, the external heat exchanger 5 in this embodiment is a V-shaped finned tube heat exchanger, composed of a flat plate finned tube heat exchanger. During operation, it has the characteristic of "fin planer cutting the airflow in stages and distributing it at low speed". The V-shaped finned tube heat exchanger used in the external heat exchanger 5 in this embodiment is fundamentally different from the V-shaped finned tube heat exchanger of the existing air conditioning module. The "V" in the V-shaped finned tube heat exchanger of the existing air conditioning module is composed of fins; while the "V" in the V-shaped finned tube heat exchanger of this embodiment is composed of heat exchange tubes.

[0115] Specifically, the term "heat exchange tube" in this embodiment refers to a heat exchange pipeline that transports refrigerant, and can be one of the following: copper heat exchange tube, aluminum tube, iron tube, titanium tube, stainless steel tube, alloy tube, etc.

[0116] In this embodiment, when the air conditioning unit is running, in the air path of the external heat exchanger 5, the ambient air is drawn by the negative pressure of the fan 6 through the narrow air duct of the finned tube heat exchanger and the heat exchanger cavity, obtaining a speed and dynamic pressure head of about 4 m / s; the main airflow reaching the air outlet of the external heat exchanger 5 inertially rushes towards the wall plate of the opposite airflow vortex chamber, and is blocked, decelerated, pressurized and reflected by the opposite wall plate, directly driving the air inlet of the fan 6; the inertial airflow between adjacent air inlets of the fan 6 in the vertical direction, between the air inlet of the high-position fan 6 and the top plate of the airflow vortex chamber (main unit cover plate), and between the air inlet of the low-position fan 6 and the bottom plate of the airflow vortex chamber (main unit chassis), after being blocked, decelerated and reflected by the opposite wall plate, flows to the air inlet area of ​​the fan 6 adjacent to the opposite wall plate, realizing the deceleration, pressurization, reorganization and redistribution of the heat exchange airflow in the airflow vortex chamber, improving the uniformity and stability of the airflow inflow into the air inlet of the fan 6;

[0117] In this embodiment, the effect of the backward centrifugal fan's air intake on the heat exchange airflow can be decomposed into two actions: two continuous actions without a clear interface, that is, two consecutive composite actions.

[0118] ① The centrifugal fan 6's air inlet generates a gradient negative pressure from the inside out in the negative pressure chamber 2 and air inlet chamber 7 of the external heat exchanger 5, drawing ambient air into the heat exchanger to complete heat exchange. Afterwards, the airflow from the heat exchanger inertially rushes into the airflow vortex chamber, where it is blocked, slowed down, pressurized, and reflected by the opposing wall plate, completing buffering, adjustment, and reconfiguration.

[0119] ② The airflow from the outlet of the external heat exchanger 5, which has been buffered, adjusted, and reconfigured in the airflow vortex chamber, is strongly pulled by the deep negative pressure at the inlet of the centrifugal fan 6. After being accelerated again, it rushes into the inlet of the fan 6 at high speed from the 360° outer periphery of the inlet. After being centrifugally pressurized by the impeller of the centrifugal fan 6, it is forced into the exhaust chamber 3. Finally, it is injected into the ambient atmosphere at a high speed of about 7m / s through the vertical strip exhaust port of the exhaust chamber 3 for diffusion and dilution.

[0120] like Figure 8 As shown, during the operation of the air conditioning unit heat exchanger in this embodiment, air enters from one side of the V-shaped finned tube heat exchanger and exits from the opposite side. The airflow lines entering the fin gaps intersect the plane of the fins at obtuse angles. The fins "obliquely cut" the airflow lines with a speed of about 4 m / s. Furthermore, a large number of fin planers on the finned tubes progressively plan the airflow lines. Each planed "shaving" airflow is then stuffed into a corresponding fin gap to achieve a "low-speed air distribution" of about 1.5 m / s in the fin gaps. When the airflow lines leave the fin gaps after heat exchange, they are once again "obliquely cut" by the long side of the fins, and after turning, they enter the suction port of the centrifugal fan 6.

[0121] The total airflow resistance of the external heat exchanger 5 in this embodiment includes friction resistance and local resistance. Local resistance includes the resistance caused by the narrowing of the air inlet cross section, the resistance caused by the narrowing of the filter mesh, the resistance caused by the turning of the airflow direction in the gap between the inlet and outlet fins, the resistance caused by the deceleration and acceleration of the airflow in the gap between the inlet and outlet fins, and the resistance caused by the turning of the airflow in the airflow vortex chamber. In this embodiment, local resistance is the main body of the total airflow resistance.

[0122] Under the operating condition of air coming from one side of the air inlet of fan 6, that is, when the airflow direction is orthogonal or nearly orthogonal to the air inlet direction of fan 6, the airflow resistance of the side of fan 6 away from the air inlet (the side closer to compressor cavity 4 in the figure) is usually higher than the resistance of the side adjacent to the air inlet (the side closer to heat exchanger outlet). In other words, the air pressure on the side of fan 6 away from the air inlet is lower than the pressure on the side adjacent to the air inlet. This will cause the operating fan 6 to be subjected to a clockwise couple and be in an unbalanced operating state, resulting in noise, vibration and asymmetrical wear of bearings.

[0123] This embodiment addresses the aforementioned problems by innovatively setting the position and size of the air inlet on the main housing 1, the angle of the airflow gap between the airflow and the fins, and innovatively setting the spatial relationship between the air inlet of the housing 1, the finned tube heat exchanger, and the air intake of the fan 6. These measures adjust the local resistance of the airflow in various areas of the finned tube heat exchanger's outlet section, generating an outlet airflow of approximately 4 m / s that inertially impacts the target wall plate. This causes the airflow to decelerate, increase pressure, and reorganize in the airflow vortex chamber, thereby raising the pressure on the side of the fan 6 away from the air inlet to nearly the pressure on the side adjacent to the air inlet. This homogenizes the airflow pressure around the air intake of the fan 6, balancing the total resistance of the airflow in various areas of the airflow section. While achieving uniform ventilation and heat exchange in the finned tube heat exchanger, this also eliminates the aforementioned force couple effect on the operating fan 6, allowing it to enter a balanced operating state. This eliminates the resulting noise, vibration, and asymmetrical bearing wear.

[0124] like Figure 9-10 As shown, this embodiment uses a backward centrifugal fan as the power source for the airflow of the external heat exchanger 5; the external heat exchanger 5 includes fins 501 and heat exchange tubes 502; during operation, the fin assembly performs a stepped planing and low-speed air distribution on the incoming airflow; the microscopic process of the heat exchange airflow undergoing stepped planing and low-speed air distribution by the fin planer in this V-shaped finned tube heat exchanger is an important part of the inlet and outlet air field and the inlet and outlet airflow path of the external heat exchanger assembly.

[0125] At the airflow inlet section EE, a medium-speed airflow of approximately 4 m / s, flowing in from the outer facade of the equipment platform, propels in a uniform laminar flow to the fin gap inlet section FF. At FF, the incoming airflow line forms an obtuse angle with the fins behind the gap. The fins behind the gap act as "planers," carving out a section of airflow from the main incoming airflow and inserting it into the fin gap. At FF, the main incoming airflow, "carved out" by the tip of the "fin planer," is intercepted and impacts the "planer" of the fins behind the gap at an obtuse angle. "The blade tip is cut off and then reflected by the fins on the front side of the gap, and then diffuses and slows down in the fin gap; the airflow of about 1.5m / s, which is cut out by the 'fin planer' and slowed down by collision diffusion, is pulled by the negative pressure of the negative pressure chamber 2 and overcomes the resistance of the fin gap channel to flow out of the fin channel; the low-speed airflow that reaches the fin gap outlet GG section is accelerated again to a medium-speed airflow of about 4m / s under the negative pressure of the negative pressure chamber 2, and then converges at the HH section and is discharged into the negative pressure chamber 2."

[0126] In this embodiment, the air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction is driven by the centrifugal fan 6, which drives the airflow per unit volume (1m³). 3 / s, equivalent to the operating airflow of a 4HP main unit external heat exchanger (5 operating airflow), increased by 1 / 2 × m × (v2) 2 -v1 2The energy consumption is 8.3W. The total energy consumption of the incoming air per unit volume is approximately 2 × 8.3W = 16.6W (based on a ventilation efficiency of 0.5), which accounts for about 0.4% of the total power of the air conditioning unit. The local resistance caused by the one deceleration and two bends of the heat exchange airflow when passing through the finned tube heat exchanger increases the resistance of the fin gap and has a "throttling" effect, improving the uniformity of ventilation in the finned tube heat exchanger and increasing the heat transfer coefficient and heat transfer efficiency. This local resistance consumes the kinetic energy of the incoming airflow.

[0127] In this embodiment, the energy consumption of the air intake airflow of approximately 4 m / s is equivalent to the energy consumption of the exhaust airflow of a traditional side-discharge air conditioning unit. Therefore, compared to a traditional side-discharge air conditioning unit, the air conditioning unit in this embodiment has a net increase in high-speed exhaust airflow energy consumption of 7 m / s, and the energy consumption per unit volume of exhaust airflow (1 m³ / s) is significantly higher. 3 / s, equivalent to the operating airflow of a 4HP main unit) increased by 1 / 2×m×(v2) 2 -v1 2 =29.4w energy consumption. The total energy consumption of exhaust air per unit volume is about 2×29.4w, accounting for about 2% of the total power of the air conditioning unit (based on a ventilation efficiency of 0.5). In this embodiment, the COP of the compact air conditioning unit is increased by more than 10% due to the orthogonal arrangement of the exhaust direction of the external heat exchanger 5 and the intake direction of the fan 6. Therefore, the energy efficiency brought about by the 2% increase in the total energy consumption of the unit caused by the 7m / s high-speed exhaust is 10% / 2%=5, which is the part with the highest energy efficiency ratio in the total energy consumption of the unit.

[0128] Example 2

[0129] like Figure 11-15 As shown, this embodiment discloses an air conditioning unit in which the air outlet direction of the heat exchanger is orthogonal to the air intake direction of the fan. Its heat exchange tube V-shaped finned tube heat exchanger is an asymmetric heat exchange tube V-shaped finned tube heat exchanger with unequal lengths on both sides, and is composed of two heat exchange tube I-shaped finned tube heat exchangers with different lengths.

[0130] Among them, the long heat exchange tube type I finned tube heat exchanger is close to the outer side plate 11 of the shell 1; the short heat exchange tube type I finned tube heat exchanger is close to the side plate 12 of the exhaust cavity 3.

[0131] The air inlet cavity 7 of the shell 1 is also provided with an air supply strip 72; the air supply strip 72 is located on the outer side plate 11 of the shell 1 near the long heat exchange tube I-type finned tube heat exchanger.

[0132] The air intake and air guide panel of the fan 6 are wedged into the negative pressure chamber 2, and part of the space of the compressor chamber 4 is wedged into the negative pressure chamber 2.

[0133] like Figure 11-15As shown, this embodiment shares the same technical principles and routes as Embodiment 1, both adhering to the concept of air conditioning unit and equipment platform exterior decoration mechanism airflow coupling and energy coupling. It insists on the technology of internalizing and making explicit the air inlet and outlet ducts of the external heat exchanger 5 of the air conditioning unit, and the technology of using a stepped planer to plan the airflow of the fins of the zigzag-shaped external heat exchanger assembly to implement deceleration and air distribution. This aims to reduce the structure and volume of the air inlet and outlet ducts of the external heat exchanger 5 built into the air conditioning unit. By orthogonally setting the air outlet direction of the heat exchanger to the air intake direction of the air conditioner fan 6, an airflow vortex is constructed between the air outlet of the heat exchanger and the air intake of the fan 6, transforming this airflow vortex into a buffer, adjustment, and homogenization chamber for the airflow of the external heat exchanger 5. By setting the airflow vortex and adjusting the spatial relationship between the negative pressure chamber 2 of the air inlet chamber 7 and the exhaust chamber 3, the vertical exhaust chamber 3 of the air conditioning unit in the background technology is eliminated, reducing the longitudinal depth of the air conditioning unit and further reducing the thickness of the unit, resulting in a structurally compact wall-mounted air conditioning unit.

[0134] The difference in this embodiment is that the V-shaped finned tube heat exchanger is an asymmetrical design:

[0135] ① The air inlet chamber 7 and negative pressure chamber 2 of the external heat exchanger 5 are designed asymmetrically. The head of the outer finned tube (the tip of the V-shape) of the heat exchange tube V-shaped finned tube heat exchanger is close to the outer side plate, and the main air inlet area of ​​the main air inlet is allocated to the inner finned tube. The air inlet air of the outer finned tube comes not only from the main air inlet, but also from the make-up air strip slot set on the outer side plate.

[0136] ②The straight tubes of the two finned tube heat exchangers that make up the V-shaped external heat exchanger assembly are not the same length. The front (outer) flat finned tube can extend into the airflow vortex chamber and into the middle of the air intake of the fan 6.

[0137] ③ During the design, the thickness of the reduced exhaust chamber 3 is approximately the same as the thickness of the centrifugal fan 6 impeller outlet, rather than the thickness of the entire fan 6. The fan 6 intake port and air guide panel move forward into the negative pressure chamber 2, i.e. the air vortex chamber, forming a misaligned arrangement.

[0138] This embodiment possesses all the advantages of the airflow vortex chamber of Embodiment 1, and because it adopts asymmetric design technology to suit the asymmetric scenario of the equipment platform, it further reduces the three-dimensional dimensions, floor space, and volume of the air conditioning unit compared to Embodiment 1, exhibiting distinct characteristics and advantages:

[0139] ① An air supply function for the outer wall of the main unit was developed.

[0140] In this embodiment, the air inlet chamber 7 and negative pressure chamber 2 of the external heat exchanger 5 are designed asymmetrically. The head (the tip of the V-shape) of the outer finned tube of the heat exchanger tube V-shaped finned tube is close to the outer side plate, and the main air inlet area of ​​the main air inlet is allocated to the inner finned tube. The airflow of the outer finned tube comes not only from the main air inlet, but also from the make-up air strips set on the outer side plate, thus developing the supplementary ventilation function of the outer wall of the main unit.

[0141] ② The length of the main unit has been reduced.

[0142] This embodiment not only eliminates the vertical air duct in the prior art, but also implements a staggered design for the two finned tube heat exchangers that make up the V-shaped external heat exchanger assembly, so that the front (outer) flat finned tube can extend into the airflow vortex chamber and overlap to the middle of the air intake of the fan 6, thus reducing the length of the main unit.

[0143] ③ The thickness of the exhaust chamber was reduced by 3 mm.

[0144] In this embodiment, the air intake and air guide panel on the fan 6 module are wedged forward into the negative pressure chamber 2, i.e. the air vortex chamber. The thickness of the exhaust chamber 3 is designed to be approximately the same as the thickness of the air outlet of the centrifugal fan 6 impeller, rather than approximately the same as the thickness of the entire fan 6. This results in the fan 6 module and the exhaust chamber 3 being misaligned, thus reducing the thickness of the exhaust chamber 3.

[0145] Example 3

[0146] like Figure 16 As shown, this embodiment shares the same technical principles and routes as Embodiment 2. Both adhere to the concept of air conditioning unit and equipment platform exterior decoration mechanism airflow coupling and energy coupling, insist on the technology of internalizing and making the air inlet and outlet ducts of the air conditioning unit's external heat exchanger 5 visible, and implement deceleration and air distribution technology by using the stepped planing of the fins of the zigzag-shaped external heat exchanger assembly to reduce the structure and volume of the air inlet and outlet ducts of the external heat exchanger 5 built into the air conditioning unit. By setting the airflow vortex chamber orthogonally to the air outlet direction of the heat exchanger and the air intake direction of the air conditioning unit's fan 6, and adjusting the spatial relationship between the negative pressure chamber 2 and the exhaust chamber 3 of the air inlet chamber 7, the vertical exhaust chamber 3 of the air conditioning unit in the background technology is eliminated. Furthermore, asymmetric design technology is adopted to fit the asymmetric scenario of the semi-open equipment platform, and a comprehensive asymmetric design is implemented for the air inlet chamber, negative pressure chamber 2 (airflow vortex chamber), and exhaust chamber 3 of the unit, comprehensively reducing the length and thickness of the unit.

[0147] The difference in this embodiment is that a single fan 6 drives the airflow path of the external heat exchanger 5, thus reducing the height of the air conditioning unit.

[0148] This embodiment uses a single fan to drive the airflow, making it suitable for low-power air conditioning units and wall-mounted installations.

[0149] Example 4

[0150] like Figure 17 As shown, this embodiment discloses an air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction. The difference in this embodiment is that the external heat exchanger 5 uses a single-piece flat finned tube, specifically a Type I finned tube heat exchanger. The Type I finned tube heat exchanger is disposed in the air inlet cavity 7 of the housing 1, forming a certain angle α with the main air inlet surface of the air inlet cavity 7 of the housing 1. The angle α is an acute angle. Preferably, the angle α is 15°-70°.

[0151] This embodiment shares the same technical principles and approach as Embodiment 3, both adhering to the concept of air conditioning unit and equipment platform exterior decoration mechanism airflow coupling and energy coupling. It insists on the technology of internalizing and making explicit the air conditioning unit's external heat exchanger inlet and outlet ducts, and the technology of using a stepped planer to plan the airflow of the finned external heat exchanger assembly to reduce the volume and structure of the air conditioning unit's internal external heat exchanger 5 inlet and outlet ducts. By setting up an airflow vortex chamber and adjusting the spatial relationship between the negative pressure chamber 2 and the exhaust chamber 3 of the air inlet chamber 7, the vertical exhaust chamber 3 of the air conditioning unit in the background technology is eliminated. Furthermore, an asymmetric design technology is adopted to fit the asymmetric scenario of the semi-open equipment platform, implementing a comprehensive asymmetric design for the unit's air inlet chamber, negative pressure chamber 2 (airflow vortex chamber), and exhaust chamber 3, thus comprehensively reducing the length and thickness of the unit.

[0152] This embodiment is particularly suitable for low-power air conditioning units, such as 1 / 1.5 / 2 / 3HP room air conditioners;

[0153] For low-power room air conditioners, if the outdoor heat exchanger 5 of the outdoor unit adopts a V (or N, W) shaped finned tube heat exchanger, the materials required for the finned tube end plates and elbows of the two or more flat finned tube heat exchangers required to construct the V (or N, W) shaped outdoor heat exchanger 5 will increase significantly, the ineffective flow of the refrigerant circuit will increase, the local resistance in the refrigerant circuit will increase, the workload of elbow welding will increase, and the risk points of refrigerant leakage will increase.

[0154] This embodiment of the air conditioner outdoor unit uses a single-finned tube heat exchanger, which has all the advantages of embodiments 1 / 2 / 3. In addition, compared with embodiments 1 / 2 / 3 of the air conditioner main unit which uses a V-shaped finned tube heat exchanger, this embodiment has another important advantage: under the same cooling capacity and the same machine height, the length of the straight tube of the heat exchanger tube of the single-finned tube heat exchanger used in this embodiment is increased by 100%, while the material of the finned tube end plate and elbow is reduced by 50%, the ineffective flow without heat exchange in the refrigerant circuit is reduced by 50%, the local resistance of the refrigerant circuit is reduced by 50%, and the welding workload and refrigerant leakage risk points are reduced by 50%.

[0155] Example 5

[0156] This embodiment shares the same technical principles and approach as Embodiment 4, both adhering to the concept of airflow coupling and energy coupling between the external heat exchanger of the air conditioning unit and the exterior decoration mechanism of the equipment platform. It insists on the technology of internalizing and making the air inlet and outlet ducts of the external heat exchanger of the air conditioning unit visible, and employing a zigzag-shaped external heat exchanger technology with ultra-high specific volume heat transfer intensity through the fin planer's stepped planing of the airflow and the implementation of decelerated air distribution. It aims to reduce the structure and volume of the air inlet and outlet ducts of the external heat exchanger 5 built into the air conditioning unit. By orthogonally setting the air outlet direction of the heat exchanger to the air intake direction of the air conditioning unit's fan, an airflow vortex chamber is constructed between the air outlet of the heat exchanger and the air intake of the fan, transforming this airflow vortex chamber into a buffer, adjustment, and reorganization chamber for the airflow of the external heat exchanger 5.

[0157] This embodiment eliminates the vertical exhaust cavity 3 of the air conditioning unit in the prior art by setting up an airflow vortex chamber and adjusting the spatial relationship between the negative pressure cavity 2 of the air inlet cavity 7 and the exhaust cavity 3, thereby reducing the longitudinal depth of the air conditioning unit and further reducing the thickness of the unit, thus constructing a compact wall-mounted air conditioning unit.

[0158] The difference between the air conditioning unit in this embodiment and that in embodiment 1 is that the external heat exchanger 5 of the air conditioning unit adopts an L-shaped finned tube heat exchanger.

[0159] like Figure 18 As shown, the air inlet cavity 7 of the housing 1 is also provided with a second air inlet 8; a throttling panel 9 is provided at the second air inlet 8; the throttling panel 9 is provided with areas of different throttling resistance.

[0160] like Figure 19 As shown, the area A, which is closest to the air intake of the fan 6 and has the smallest airflow turning angle, has a permeability of 20%-40% and the largest throttling resistance. As the distance between the heat exchange area on the finned tube heat exchanger and the air intake of the fan 6 gradually increases and the airflow turning angle increases, the permeability of the throttling panel 9 in the corresponding section increases accordingly. The permeability of the throttling panel 9 in areas B, C, and D increases to 40%-60%, 60%-70%, and 70%-80%, respectively.

[0161] To address the issue of uneven heat exchange in different areas of an L-shaped finned tube heat exchanger, this embodiment employs throttling panels arranged in segments along the surface of the finned tubes on the outer (or inner) side of the heat exchanger. Based on the distance between the fin gap and the fan intake in each segment (the magnitude of friction resistance) and the airflow turning angle (the magnitude of local resistance), throttling panels with varying permeability and resistance are configured: The throttling panel in area A, closest to the fan intake and with the smallest airflow turning angle, has the lowest permeability (e.g., 40%) and the highest throttling resistance. As the distance between the heat exchange area and the fan intake gradually increases (increasing friction resistance) and the airflow turning angle increases (increasing local resistance), the permeability of the corresponding throttling panel increases accordingly. For example, the permeability of the throttling panels in areas B, C, and D increases to 60% and 80%, respectively.

[0162] This embodiment retains the advantages of the L-shaped finned tube heat exchanger, and ensures the uniformity of ventilation and heat exchange of the L-shaped finned tube by using throttling panels with different throttling resistances arranged in sections on the L-shaped finned tube.

[0163] Example 6

[0164] The air conditioning unit in this embodiment, with its heat exchanger outlet direction orthogonal to the fan intake direction, shares the same technical principles and routes as embodiments 1-4. Both adhere to the concept of airflow coupling and energy coupling between the external heat exchanger of the air conditioning unit and the exterior decorative structure of the equipment platform. They maintain the technology of internalizing and making the air exchanger's inlet and outlet ducts visible, and employing a zigzag-shaped external heat exchanger technology that uses fin planers to progressively plan the airflow and implement deceleration and air distribution. This aims to reduce the structure and volume of the internal external heat exchanger's inlet and outlet ducts. By orthogonally aligning the heat exchanger outlet direction with the air conditioning unit's fan intake direction, an airflow vortex is constructed between the heat exchanger outlet and the fan intake, transforming this vortex into a buffer, adjustment, homogenization, and reorganization chamber for the external heat exchanger's outlet airflow. By setting up the airflow vortex and adjusting the spatial relationship between the inlet negative pressure chamber and the exhaust chamber, the longitudinal depth of the air conditioning unit is reduced, further decreasing its thickness, thus constructing an ultra-thin wall-mounted air conditioning unit.

[0165] like Figure 20-23 As shown, the air conditioning unit in this embodiment, whose heat exchanger outlet direction and fan suction direction are orthogonal, differs from that in embodiment 2 in that the exhaust port 31 of the exhaust cavity 3 is located on the second back plate 33 of the exhaust cavity opposite to the air inlet of the exhaust cavity 3 (i.e., the air inlet of the fan 6), and is configured as a small-area horizontal strip exhaust port; the small-area strip exhaust port is located at the bottom of the second back plate 33 of the exhaust cavity.

[0166] The small area indicates that the area of ​​the exhaust vent is 10% to 30% of the area of ​​the second back panel.

[0167] The compressor chamber 4 is located on the outer side 21 of the first back plate of the negative pressure chamber 2. That is, the compressor chamber 4 and the negative pressure chamber 2 are arranged side by side on the outer side of the same side plate of the exhaust chamber 3.

[0168] In another specific embodiment, a small-area exhaust vent is located in the upper middle part of the second back plate 33, and the small-area exhaust vent is a rectangular or diamond-shaped exhaust vent.

[0169] In another specific embodiment, a small-area exhaust vent is located in the horizontal middle of the second back plate 33, and the small-area exhaust vent is a vertical strip exhaust vent.

[0170] In this embodiment, the application scenario of the air conditioning unit is an equipment platform with a decorative structure on the exterior facade. The main decorative structure of the equipment platform's exterior facade has both shielding and transparency. It can be a metal column group, a louver, a decorative surface with a garden gate, a classical entrance door, or a landscape painting as the core, or a decorative surface with narrow strip decorative panels staggered front and back to leave a longitudinal gap between the panels as an air inlet, etc. The lower edge of the main decorative structure has a strip-shaped exhaust port such as a wire mesh structure, which is compatible with the low-position strip exhaust port of the air conditioning unit fusion body.

[0171] In this embodiment, the air conditioning unit is installed on the equipment platform with its back to the outer facade of the equipment platform, so that the horizontal strip exhaust port on the back panel of the exhaust cavity is aligned with the strip exhaust port reserved below the main decorative structure of the outer facade.

[0172] In this embodiment, since both the air conditioning unit and the equipment platform exterior use horizontal strip exhaust vents, the symmetrical design of the vertical strip exhaust vents on both sides, which is not required in the scenario of vertical strip exhaust vents, can be set as a single exhaust vent on the lower side of the exterior. The exhaust vent occupies a smaller proportion of the exterior and the continuity of the main decorative structure of the exterior is better. Furthermore, because the exhaust vent is set close to the upper edge of the equipment platform's sill, away from the main air intake area of ​​the exterior, the risk of short circuit in the air conditioning unit's exhaust is greatly reduced.

[0173] Example 7

[0174] This implementation example Figure 24-25 As shown, this embodiment is a device platform solution for installing an air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction;

[0175] The fundamental changes in the application scenarios of air conditioning units now call for disruptive innovations in the structure of the air conditioning unit itself and the spatial relationship between the air conditioning unit and the equipment platform:

[0176] First, driven by policies such as “building good houses” and “not including equipment platform area in the floor area ratio” from the housing and construction department, the accessibility of the independent equipment platform of the multi-split air conditioning unit with good accessibility has been effectively implemented. Its potential to reduce noise radiation range and create a simple and elegant indoor and outdoor decoration will be fully explored, and it will replace single-split room air conditioners and become the mainstream product in the air conditioning market.

[0177] Secondly, the traditional side-discharge multi-split air conditioning unit enters the equipment platform from the exterior wall of the building. The air inlet and outlet of the external heat exchanger 5 face unprecedentedly harsh spatial constraints of the equipment platform, which has a floor below, a ceiling above, a wall behind, and louvers in front. The side-discharge air conditioning unit faces the louvers, resulting in increased exhaust static pressure, reduced air volume, and some of the reduced air volume is short-circuited backflow, which seriously degrades the air conditioning performance.

[0178] Constructing a high-quality equipment platform requires innovation in the structure of the air conditioning unit itself, innovation in the exterior structure of the equipment platform, and innovation in the spatial relationship between the air conditioning unit and the exterior of the equipment platform.

[0179] An equipment platform is provided with an air conditioning unit as described in embodiments 1-5. The exterior facade of the equipment platform is provided with a vertical strip exhaust vent 13 on at least one side, and the exterior facade is also provided with a main decorative structure 14; the vertical strip exhaust vent 13 points to a vertical strip exhaust vent on one side of the exterior facade;

[0180] The vertical strip-shaped exhaust vent 13 on the exterior facade of the equipment platform includes a metal mesh and a metal column assembly;

[0181] The main decorative structure 14 of the equipment platform facade includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0182] Specifically, in this embodiment, the air conditioning unit platform is typically located on the north side of the building, preferably on the north side of the public restroom to reduce the occupation of the building's open space, and is connected to the north-side living balcony to fundamentally solve the accessibility problem of the equipment platform; the vertical strip exhaust vent of the air conditioning unit corresponds to the vertical strip metal mesh reserved on the exterior facade of the equipment platform; the exterior facade of the equipment platform can use narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels as air inlets; the main decorative structure of the exterior facade can be a metal column group, louvers, garden gate, classical entrance door, landscape painting, etc.; this embodiment uses a louver decorative mechanism.

[0183] Specifically, the air outlet bend 10 is located at the outlet of the air exhaust cavity 3 of the air conditioning unit, so that the high-temperature gas exhausted in summer is turned at a small angle and discharged. This is mainly to prevent the high-temperature exhaust airflow in summer from flowing back to the air intake cavity 7 located on the same side; thus preventing the outdoor unit of the air conditioner from drawing in already heated air, which would significantly reduce the heat exchange efficiency. The same applies in winter.

[0184] In this embodiment, fresh air is drawn in through the air inlet of the external heat exchanger 5 of the air conditioning unit. The louvers (ventilated facade) on the exterior facade corresponding to the air inlet of the unit constitute the air intake zone of the air conditioning unit, while the metal mesh on the side of the exterior facade corresponding to the vertical strip air outlet area of ​​the air conditioning unit constitutes the exhaust zone. The air intake zone and the exhaust zone are separated from each other, blocking the possibility of short-circuiting of exhaust air from the air conditioning unit. Furthermore, based on the exterior facade of the equipment platform, the exhaust port area of ​​the external heat exchanger 5 of the air conditioning unit on the side of the facade in this embodiment is very small, significantly smaller than the area of ​​the louvers on the facade that constitutes the air intake zone (the exhaust port area is less than 1 / 10 of the air intake zone). The airflow in the louver area has a very low wind speed and very little resistance when passing through the louvers, while the exhaust airflow is injected into the ambient atmosphere at a small angle after passing through the metal mesh on the side of the louvers, resulting in high speed, long range, and good diffusion and dilution effect. The thermal performance of the air conditioning unit on the equipment platform in this embodiment has not decreased compared to the laboratory data, and the task of "heat transporter" is completed with high quality and high efficiency.

[0185] This embodiment eliminates the obstruction of the louvers to the exhaust air of the external heat exchanger 5 of the classic air conditioning unit, effectively unblocks the air path of the external heat exchanger 5, and ensures the thermal performance of the air conditioning unit, while maintaining the decorative appearance of the louver facade. It achieves a perfect unity between the decorative appearance of the equipment platform facade, the visual effect of the building facade, and the excellent thermal performance of the air conditioning unit.

[0186] In another specific embodiment, an air conditioning unit of embodiment 6 is set on an equipment platform. A small rectangular, rhomboid, or vertical strip exhaust port is set in the middle or lower middle part of the outer facade of the equipment platform. The outer facade is also provided with a main decorative structure. The small rectangular, rhomboid, or vertical strip exhaust port on the second back plate of the exhaust cavity faces the small rectangular, rhomboid, or vertical strip exhaust port in the middle or lower middle part of the outer facade.

[0187] The small-area exhaust vents on the exterior facade include metal mesh, metal column groups, and / or openwork patterns; the main decorative structure includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0188] In another specific embodiment, a horizontal strip exhaust vent is provided at the bottom of the outer facade of the equipment platform, and a main decorative structure is also provided on the outer facade; the exhaust vent of the air conditioning unit faces the horizontal strip exhaust vent at the bottom of the outer facade.

[0189] The horizontal strip-shaped exhaust vents on the exterior facade include metal mesh and / or metal column assemblies;

[0190] The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, landscape painting designs, and ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0191] In this embodiment, the air conditioning unit is installed on the equipment platform facing away from the platform's exterior facade, with the horizontal strip exhaust vent on the rear panel of the exhaust cavity aligned with the pre-reserved strip exhaust vent below the main decorative structure of the exterior facade. Because both the air conditioning unit and the equipment platform's exterior facade use horizontal strip exhaust vents, this embodiment eliminates the need for the symmetrical design of vertical strip exhaust vents found in other scenarios. Instead, a single lower-side exhaust vent can be installed on the exterior facade, resulting in a smaller proportion of the exhaust vent on the facade and better continuity of the main decorative structure. Furthermore, because the exhaust vent is positioned close to the upper edge of the equipment platform's curb, away from the main air intake area of ​​the exterior facade, the risk of short-circuiting during air conditioning unit exhaust is significantly reduced.

[0192] The advantage of this embodiment of an equipment platform for arranging the air conditioning unit with the heat exchanger outlet direction orthogonal to the fan intake direction is:

[0193] ① Construct an efficient airflow system for the external heat exchanger of the air conditioning unit to pass through the exterior facade of the equipment platform, so as to realize the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the building facade.

[0194] The vertical strip exhaust vent design close to the side of the equipment platform in this embodiment can significantly reduce the width of the exhaust vent, reduce the occupation of the building's open space and the occupation of decorative louvers commonly used on the facade. It not only maintains the function and aesthetics of the louvered building facade in preventing wind and rain from entering the equipment platform, but also effectively improves the range and diffusion dilution effect of the exhaust air from the external heat exchanger of the air conditioning unit entering the ambient atmosphere through the facade of the equipment platform, thus constructing a highly efficient airflow system for the external heat exchanger to pass through the facade of the equipment platform.

[0195] This embodiment is applicable to residential embedded equipment platforms. Because the air inlet and outlet of the air conditioning unit are set on the same plane, it is especially suitable for installation on the side wall of the balcony of school student dormitories, company employee dormitories, and LoFT apartments. When running, the air inlet of the air conditioning unit directly draws in fresh air from the exterior facade. After heat exchange, the exhaust airflow is emitted and diffused into the ambient atmosphere along the balcony side wall. The main air inlet and exhaust airflow does not pass through the main space of the balcony (equipment platform), does not affect the function of the balcony, and is conducive to the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the exterior facade of apartment buildings.

[0196] ②Increase the power density of the equipment platform and reduce the footprint of the equipment platform.

[0197] This embodiment utilizes a finned tube heat exchanger assembly with high specific volume heat transfer intensity and an external heat exchanger 5 with built-in inlet and outlet air ducts. This eliminates the need for reserved air duct space around the traditional air conditioning unit and increases the height of the unit to develop unused space at the top of the equipment platform. This effectively reduces the footprint of ineffective and inefficient space and ventilation blind spots on the equipment platform, significantly increasing the average cooling and heating power density of the equipment platform. Under the same cooling and heating load, this greatly saves the equipment platform area occupied by the air conditioning unit.

[0198] ③ Facilitates the inspection and repair of air conditioning units.

[0199] In this embodiment, the air conditioning unit integrates the compressor, gas-liquid separator, four-way valve, expansion valve, electrical box, fan, and other refrigerant circuit components into the compressor chamber, which is parallel to the heat exchanger chamber. All refrigerant circuit and air circuit components of the air conditioning unit are housed in a detachable chamber with only one outer shell, which facilitates the inspection and maintenance of the air conditioning unit.

[0200] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air conditioning unit with its heat exchanger outlet direction orthogonal to the fan intake direction, characterized in that, It includes a shell (1), a negative pressure chamber (2), an exhaust chamber (3), a compressor chamber (4), an external heat exchanger (5), and a fan (6); The negative pressure chamber (2) and the exhaust chamber (3) are arranged side by side; the compressor chamber (4) is located on the outside of the first back plate of the negative pressure chamber (2) and / or the exhaust chamber (3); The air intake direction of the fan (6) is orthogonal or nearly orthogonal to the main air outlet direction of the external heat exchanger (5), thus constructing an airflow vortex chamber between the air outlet of the external heat exchanger (5) and the air intake of the fan (6) in the negative pressure chamber.

2. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The exhaust port of the exhaust chamber is located on the third back plate of the exhaust chamber on the same side as the main air inlet of the air inlet chamber (7) of the housing, and the fan (6) in the exhaust chamber (3) is located away from its exhaust port.

3. The air conditioning unit according to claim 2, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The exhaust port of the exhaust chamber is a vertical strip-shaped exhaust port.

4. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The exhaust port of the exhaust chamber is located on the second back plate of the exhaust chamber opposite to the air inlet of the exhaust chamber, and a small area exhaust port is provided.

5. The air conditioning unit according to claim 4, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The small-area exhaust vent is located at the bottom of the second back panel, and the small-area exhaust vent is a horizontal strip-shaped exhaust vent.

6. The air conditioning unit according to claim 4, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The small-area exhaust vent is located in the upper middle part of the second back panel, and the small-area exhaust vent is rectangular or diamond-shaped.

7. The air conditioning unit according to claim 4, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The small-area exhaust vent is located in the horizontal center of the second back panel, and the small-area exhaust vent is a vertical strip-shaped exhaust vent.

8. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The fan (6) is a centrifugal fan.

9. The air conditioning unit according to claim 8, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The centrifugal fan is a backward centrifugal fan; the area of ​​the exhaust surface on the outer periphery of the impeller of the fan (6) is 2 to 8 times the area of ​​the air inlet of the fan (6).

10. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The external heat exchanger (5) is disposed in the air inlet cavity (7) of the shell (1); The external heat exchanger (5) consists of heat exchange tubes and metal fins sleeved on the heat exchange tubes; The heat exchange tube is a heat exchange pipeline that carries refrigerant transport and heat exchange, and is selected from any one of copper tube, aluminum tube, iron tube, titanium tube, stainless steel tube, and alloy tube; The structure of the external heat exchanger (5) includes a heat exchange tube type I finned tube heat exchanger, a heat exchange tube type L finned tube heat exchanger, and a heat exchange tube type M finned tube heat exchanger, a heat exchange tube type N finned tube heat exchanger, and a heat exchange tube type V finned tube heat exchanger assembled from heat exchange tube type I finned tube heat exchangers.

11. The air conditioning unit according to claim 10, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The heat exchange tube V-type finned tube heat exchanger is an asymmetric heat exchange tube V-type finned tube heat exchanger with unequal lengths on both sides, and is composed of two heat exchange tube I-type finned tube heat exchangers with different lengths. Among them, the long heat exchange tube type I finned tube heat exchanger is close to the outer side plate of the shell (1); the short heat exchange tube type I finned tube heat exchanger is close to the side plate of the exhaust cavity (3).

12. The air conditioning unit according to claim 11, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The air inlet cavity (7) of the shell (1) is also provided with an air supply strip; the air supply strip is provided on the outer side plate of the shell (1) near the long heat exchange tube I-type finned tube heat exchanger.

13. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The air inlet and air guide panel of the fan (6) are wedged into the negative pressure chamber (2), and part of the space of the compressor chamber (4) is wedged into the negative pressure chamber (2).

14. The air conditioning unit according to claim 10, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The heat exchange tube type I finned tube heat exchanger is installed in the air inlet cavity (7) of the shell (1). The side of the external heat exchanger (5) is close to the main air inlet and forms a certain angle α with the main air inlet surface of the air inlet cavity (7) of the shell (1).

15. The air conditioning unit according to claim 14, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that... The included angle α is 15°-70°.

16. The air conditioning unit according to claim 1, wherein the heat exchanger outlet direction is orthogonal to the fan suction direction, is characterized in that, The air inlet cavity (7) of the housing (1) is also provided with a second air inlet (8); a throttling panel (9) is provided at the second air inlet (8); The throttling panel (9) is provided with regions of different throttling resistance; The A region, which is closest to the air intake of the fan (6) and has the smallest airflow turning angle, has a permeability of 20%-40% for the corresponding throttling panel (9) and the largest throttling resistance. As the distance between the heat exchange area on the finned tube heat exchanger and the air intake of the fan (6) gradually increases and the airflow turning angle increases, the permeability of the throttling panel (9) of the corresponding section increases accordingly. The permeability of the throttling panel (9) corresponding to the B, C and D regions increases to 40%-60%, 60%-70% and 70%-80%, respectively.

17. A device platform, characterized in that, The equipment platform is equipped with an air conditioning unit as described in any one of claims 1-16.

18. The device platform according to claim 17, characterized in that, The equipment platform has a vertical strip exhaust vent on at least one side of its exterior facade, and the exterior facade also has a main decorative structure; the vertical strip exhaust vent on the third back plate of the exhaust cavity faces the vertical strip exhaust vent on one side of the exterior facade.

19. The device platform according to claim 18, characterized in that, The vertical strip exhaust vent of the equipment platform includes a metal mesh and / or a group of metal columns; The main decorative structure of the equipment platform includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

20. The device platform according to claim 17, characterized in that, The equipment platform has small rectangular, rhomboid, or vertical strip-shaped exhaust vents in the middle or lower part of its exterior facade, and the exterior facade also has a main decorative structure; the small rectangular, rhomboid, or vertical strip-shaped exhaust vents on the second back plate of the exhaust cavity face the small rectangular, rhomboid, or vertical strip-shaped exhaust vents in the middle or lower part of the exterior facade.

21. The device platform according to claim 20, characterized in that, The small-area ventilation openings on the exterior facade include metal mesh, metal column groups, and / or hollowed-out structural patterns. The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

22. The device platform according to claim 17, characterized in that, The equipment platform has a horizontal strip-shaped exhaust vent at the bottom of its exterior facade, and the exterior facade also has a main decorative structure; the exhaust vent on the second back plate of the exhaust cavity faces the horizontal strip-shaped exhaust vent at the bottom of the exterior facade.

23. The device platform according to claim 22, characterized in that, The horizontal strip-shaped exhaust vents on the exterior facade are provided with metal mesh and / or metal column groups; The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

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