Air outlet structure of a cabinet machine

Abstract

The utility model relates to air conditioning technology field especially relates to a cabinet machine air -out structure, it includes the casing, air -out panel, evaporator subassembly, centrifugal fan wheel, return air grille, electric heating module and multiple jet air port, is equipped with first opening hole and second opening hole on the casing, evaporator subassembly is obliquely arranged in the casing, and will the inside space of casing is divided into the gas -exhaust space and intake space, first opening hole is linked together with the intake space, second opening hole is linked together with the gas -exhaust space, centrifugal fan wheel sets up in the intake space, electric heating module sets up in the side of evaporator subassembly towards the gas -exhaust space, return air grille covers first opening hole, air -out panel covers second opening hole, multiple jet air port detachably installs on air -out panel and is linked together with the gas -exhaust space, through multiple small opening jet air port air -out, realize long -distance directional air supply, improve indoor temperature uniformity, through the evaporator of oblique setting utilizes the depth space of casing, and adapts the installation scene of height limited.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air outlet structure for a cabinet air conditioner. Background Technology

[0002] Traditional cabinet air conditioners typically use large-area louvered air outlets, resulting in a large air delivery area and rapid airflow velocity decay. The airflow tends to diffuse quickly after leaving the outlet, making it difficult to effectively and centrally deliver air over long distances, thus affecting indoor air circulation and temperature uniformity. Meanwhile, the evaporator, as the core heat exchange component, is traditionally arranged horizontally or vertically. This arrangement results in a short contact path with the airflow and a limited effective heat exchange area, leading to low heat exchange efficiency. Furthermore, in space-constrained cabinets, horizontally or vertically placed evaporator components occupy significant longitudinal or lateral space, making it difficult to compactly arrange other functional components, thus increasing the cabinet size and manufacturing costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: a cabinet-style air outlet structure, comprising a casing, an air outlet panel, an evaporator assembly, a centrifugal impeller, a return air grille, an electric heating module, and multiple jet air outlets. The casing is provided with a first opening and a second opening. The evaporator assembly is inclined upwards from front to back within the casing along its depth direction, dividing the internal space of the casing into an upper air outlet space and a lower air inlet space. The first opening communicates with the air inlet space, and the second opening communicates with the air outlet space. The centrifugal impeller is disposed within the air inlet space, with the air inlet end of the centrifugal impeller facing the... The first opening has its outlet end facing the air inlet side of the evaporator assembly, allowing the pressurized airflow from the centrifugal impeller to flow through the evaporator assembly and enter the outlet space. The electric heating module is located on the side of the evaporator assembly facing the outlet space and downstream of the airflow. The return air grille is located on the casing and covers the first opening. The air outlet panel is located on the casing and covers the second opening. The air outlet panel has multiple spaced air outlets, and multiple jet nozzles are detachably installed at their respective air outlets and communicate with the outlet space to deliver the air in the outlet space in the form of jets.

[0005] As a further improvement to the above technical solution, two fixing brackets are also included. The fixing brackets are used to fix the evaporator assembly to the housing. The fixing brackets include a first plate and a second plate extending obliquely upward from front to back along the depth direction of the housing. The first plate is fixedly connected to the inner sidewall of the housing. The second plate is connected to the evaporator assembly by bolts.

[0006] As a further improvement to the above technical solution, a water collection tank is also included, which is located directly below the lower end of the evaporator assembly in the inclined direction, for collecting condensate that falls from the surface of the evaporator assembly.

[0007] As a further improvement to the above technical solution, the return air grille includes a grille panel and multiple air inlets, the array of multiple air inlets being evenly arranged on the grille panel, and all the air inlets being connected to the air intake space.

[0008] As a further improvement to the above technical solution, the return air grille also includes multiple baffles, which are disposed at the corresponding air inlets and tilted upward toward the air intake space to guide the incoming airflow and block foreign objects.

[0009] As a further improvement to the above technical solution, the jet nozzle is provided with a threaded hole on the surface near the air outlet panel, the air outlet panel is provided with a mounting hole, and the jet nozzle is connected and fixed to the air outlet panel by a screw, the screw passing through the mounting hole on the air outlet panel and threadedly connected to the threaded hole.

[0010] As a further improvement to the above technical solution, the air outlet panel is equipped with a control panel, and all the jet air outlets are electrically connected to the control panel to control the direction of the jet air outlets.

[0011] As a further improvement to the above technical solution, the electric heating module is a PTC electric auxiliary heating module.

[0012] The beneficial effects of this utility model are as follows: the casing provides an overall mounting frame and protection; the first and second openings clearly divide the air intake and exhaust spaces, achieving orderly airflow; the exhaust panel covers the second opening of the casing, protecting internal components from dust and foreign objects, and its exhaust holes provide a standardized installation base for the jet air outlet; the evaporator assembly achieves heat exchange of the airflow, and its inclined layout increases the contact area with the airflow; the centrifugal impeller pressurizes the intake air, providing power for the airflow to pass through the evaporator assembly and finally be delivered from the jet air outlet; the return air grille covers the first opening of the casing, preventing foreign objects from entering the air intake space and damaging the centrifugal impeller; the electric heating module heats the air processed by the evaporator assembly in heating mode, increasing the exhaust temperature to meet winter heating needs; the jet air outlet, through its small-diameter design, accelerates the airflow into a high-speed jet, achieving long-distance directional air delivery. By discharging air through multiple small-aperture jet vents and utilizing the principle of fluid continuity, the airflow velocity is significantly increased by reducing the outlet cross-sectional area while maintaining the same total air volume. This creates a high-speed, concentrated, and streamlined air jet, improving the overall temperature uniformity of the room and avoiding the energy waste of traditional air supply. The evaporator assembly is arranged at an angle along the depth of the casing. This extends the path of the airflow through the evaporator, allowing for longer contact time between the air and the heat exchange surface. Furthermore, the angle maximizes the effective heat exchange area, resulting in more thorough heat exchange. The angled evaporator utilizes the redundant space in the depth direction of the casing, eliminating the need to increase the height or width of the cabinet. This provides more reasonable installation space for other components such as the centrifugal fan and electric heating module, making the overall structure more compact and better suited for modern homes and offices with low ceilings or small areas. Attached Figure Description

[0013] Figure 1 This is one of the structural schematic diagrams of one embodiment of this utility model.

[0014] Figure 2 This is a cross-sectional view of one embodiment of the present invention.

[0015] Figure 3 This is an assembly diagram of the evaporator assembly and the fixed bracket according to one embodiment of the present invention.

[0016] Figure 4 This is an assembly diagram of the air outlet panel and jet vent according to one embodiment of the present invention.

[0017] Reference numerals in the attached drawings: 100-casing, 110-first opening, 120-second opening, 200-air outlet panel, 210-air outlet, 220-control panel, 300-evaporator assembly, 310-fixed bracket, 311-first plate, 312-second plate, 400-centrifugal impeller, 500-return air grille, 510-grill panel, 520-air inlet, 530-baffle, 600-electric heating module, 700-jet air outlet, 710-mounting hole, 800-water collection tank. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] Traditional cabinet air conditioners typically use large-area louvered air outlets, resulting in a large air delivery area and rapid airflow velocity decay. The airflow tends to diffuse quickly after leaving the outlet, making it difficult to effectively and centrally deliver air over long distances, thus affecting indoor air circulation and temperature uniformity. Simultaneously, the evaporator, as the core heat exchange component, is traditionally arranged horizontally or vertically. This arrangement results in a short contact path with the airflow and a limited effective heat exchange area, leading to low heat exchange efficiency. Furthermore, in space-constrained cabinets, horizontally or vertically placed evaporators occupy significant longitudinal or lateral space, making it difficult to compactly arrange other functional components, thus increasing the cabinet size and manufacturing costs.

[0021] Therefore, this utility model proposes a cabinet air outlet structure, referring to... Figures 1-4It includes a housing 100, an air outlet panel 200, an evaporator assembly 300, a centrifugal impeller 400, a return air grille 500, an electric heating module 600, and multiple jet air outlets 700. The housing 100 has a first opening 110 and a second opening 120. The evaporator assembly 300 is inclined upwards from front to back within the housing 100 along its depth direction, dividing the internal space of the housing 100 into an upper air outlet space and a lower air inlet space. The first opening 110 communicates with the air inlet space, and the second opening 120 communicates with the air outlet space. The centrifugal impeller 400 is disposed within the air inlet space, with the air inlet end of the centrifugal impeller 400 facing the first opening 110. The air outlet of the impeller 400 faces the air inlet side of the evaporator assembly 300, so that the airflow pressurized by the centrifugal impeller 400 flows through the evaporator assembly 300 and enters the air outlet space; the electric heating module 600 is disposed on the side of the evaporator assembly 300 facing the air outlet space and located downstream of the airflow; the return air grille 500 is disposed on the housing 100 and covers the first opening 110; the air outlet panel 200 is disposed on the housing 100 and covers the second opening 120, and the air outlet panel 200 is provided with a plurality of spaced air outlets 210, and a plurality of jet air outlets 700 are detachably installed at the corresponding air outlets 210 and communicate with the air outlet space to send the air in the air outlet space out in the form of jets.

[0022] The housing 100 provides an overall mounting frame and protection, clearly dividing the air intake and exhaust spaces through the first and second openings 120 to achieve orderly airflow. The exhaust panel 200 covers the second opening 120 of the housing 100, protecting internal components from dust and foreign objects. The exhaust port 210 on it provides a standardized installation base for the jet air outlet 700. The evaporator assembly 300 realizes heat exchange of airflow, and its inclined layout increases the contact area with the airflow. The centrifugal impeller 400 pressurizes the intake air, providing power for the airflow to pass through the evaporator assembly 300 and finally be delivered from the jet air outlet 700. The return air grille 500 covers the first opening 110 of the housing 100 to prevent foreign objects from entering the air intake space and damaging the centrifugal impeller 400. The electric heating module 600 heats the air processed by the evaporator assembly 300 in heating mode, increasing the exhaust temperature to meet winter heating needs. The jet air outlet 700 accelerates the airflow into a high-speed jet through a small-diameter design, achieving long-distance directional air delivery. Air is discharged through multiple small-aperture jet vents 700. Utilizing the principle of fluid continuity, the airflow velocity is significantly increased by reducing the outlet cross-sectional area while maintaining the same total air volume. This forms a high-speed, concentrated, and streamlined air jet, improving the overall temperature uniformity of the room and avoiding the energy waste of traditional air supply. The evaporator assembly 300 is arranged at an angle along the depth of the casing 100. This extends the path of the airflow through the evaporator, increasing the contact time between the air and the heat exchange surface. Furthermore, the angle maximizes the effective heat exchange area, allowing for more thorough heat exchange. The angled evaporator utilizes the redundant space in the depth direction of the casing 100, eliminating the need to increase the height or width of the cabinet. This provides more reasonable installation space for other components such as the centrifugal fan 400 and the electric heating module 600, making the overall structure more compact and better suited for modern homes and offices with low ceilings or small areas.

[0023] During operation, the centrifugal impeller 400 rotates at high speed driven by a motor, creating negative pressure in the air intake space at the bottom of the casing 100. Under the influence of this pressure difference, indoor air is filtered through the return air grille 500 and then drawn into the air intake space through the first opening 110. The drawn-in air is then compressed and pressurized by the centrifugal impeller 400 to gain sufficient kinetic energy; the pressurized airflow is then guided by the centrifugal impeller 400 to the inclined evaporator assembly 300. Because the evaporator forms an angle with the airflow path, the contact time is extended and the contact area is increased. As the air passes through the evaporator fins and pipes, efficient forced convection heat transfer occurs, achieving rapid cooling or preliminary heating. In heating mode, the airflow, which has been preliminarily heated by the evaporator, continues to flow upward, passing through the activated electric heating module 600, and is further heated to the set temperature to meet the need for rapid heating. The processed hot and cold air gathers in the upper air outlet space, and the air pressure gradually becomes uniform. Subsequently, the airflow is forced into multiple small-diameter jet nozzles 700. According to the fluid continuity equation, the reduction in cross-sectional area causes the airflow velocity to increase sharply, and finally, it is sent out of the machine in the form of a high-speed, concentrated jet. This jet can be transported over long distances and entrains surrounding air, achieving efficient circulation and temperature balance of indoor air.

[0024] The evaporator may vibrate under fan vibration, colliding with the casing 100 or other components and generating noise. Therefore, in one embodiment, two fixing brackets 310 are also included, which are used to fix the evaporator assembly 300 to the casing 100. The fixing bracket 310 includes a first plate 311 and a second plate 312 extending obliquely upward from front to back along the depth direction of the casing 100; the first plate 311 is fixedly connected to the inner sidewall of the casing 100; the second plate 312 is bolted to the evaporator assembly 300. The second plate 312 of the fixed bracket 310 extends upward from front to back along the depth direction of the casing 100, perfectly matching the tilt angle of the evaporator assembly 300. The evaporator can be firmly fixed by bolt connection, avoiding shaking or displacement caused by tilted installation, reducing vibration and noise, preventing pipeline fatigue damage, and improving the stability of equipment operation. The double fixing structure of the first plate 311 fixed to the inner wall of the casing 100 and the second plate 312 bolted to the evaporator distributes the weight load of the evaporator, avoiding deformation or breakage of the bracket due to excessive force at a single point. It is not easy to loosen after long-term use, effectively extending the service life of the evaporator assembly 300 and the whole machine.

[0025] Condensate on the evaporator surface cannot be effectively collected and may stagnate in areas other than the lower inclined end, accelerating metal corrosion of the components. Therefore, in one embodiment, a water collection tank 800 is also included, which is located directly below the lower inclined end of the evaporator assembly 300 to collect condensate that falls from the surface of the evaporator assembly 300. The water collection trough 800 is located directly below the inclined lower end of the evaporator assembly 300. Utilizing gravity, it guides the condensate from the inclined surface to flow naturally down the slope and drip, quickly and thoroughly collecting the condensate. This prevents water from accumulating on or inside the evaporator, ensuring long-term stable operation. The timely collection and discharge of condensate from the water collection trough 800 prevents long-term adhesion of water to the evaporator's metal pipes and fins, reducing the possibility of metal oxidation and corrosion, significantly extending the service life of the evaporator assembly 300, and lowering the probability of refrigerant leaks and other malfunctions caused by corrosion. The water collection trough 800 precisely corresponds to the evaporator's inclined direction, covering the concentrated area of ​​condensate dripping. Its collection efficiency is far higher than traditional planar water collection structures, effectively preventing condensate from dripping randomly onto electrical components or lower structures inside the casing 100, avoiding equipment damage or environmental pollution caused by leaks.

[0026] When gas enters the intake space through the return air grille 500, the airflow may collide and generate noise due to mutual compression, affecting the user's rest or concentration. Therefore, in one embodiment, the return air grille 500 includes a grille panel 510 and multiple air inlets 520. The multiple air inlets 520 are evenly arranged in an array on the grille panel 510, and all the air inlets 520 are connected to the intake space. The evenly arranged array of multiple air inlets 520 can evenly disperse the intake airflow into multiple small-flow airflows, avoiding the formation of turbulence or eddies due to the high-speed accumulation of local airflow. The dispersed airflow has a gentler flow velocity at the grille, and the friction noise between the airflow and the hole wall and the collision noise between airflows are greatly reduced. The evenly arranged air inlets 520 ensure that air enters evenly from all areas of the grille, avoiding uneven airflow intake by the centrifugal impeller 400 due to insufficient local air intake, and ensuring stable airflow of the whole machine.

[0027] Dust, hair, leaves, and other impurities may enter the casing 100, adhere to the evaporator fins, form a dirt layer, block the heat exchange channels, and reduce heat exchange efficiency. Therefore, in one embodiment, the return air grille 500 also includes multiple baffles 530. The baffles 530 are disposed at the corresponding air inlets 520 and are inclined upwards towards the air intake space to guide the incoming airflow and block foreign objects. The baffles 530 are inclined upwards towards the air intake space, which can directly intercept dust, leaves, hair, and other impurities that enter with the airflow. After colliding with the baffles 530, the impurities will naturally slide off under the action of gravity or be guided to the outside of the grille, preventing them from entering the casing 100. This effectively reduces the contamination of the evaporator fins and centrifugal impeller 400, reduces maintenance frequency, and extends the service life of components. The airflow guided by the baffles 530 flows in an orderly oblique direction, which can evenly enter the air intake space and flow to the centrifugal impeller 400, avoiding local airflow short-circuiting or excessively low flow velocity.

[0028] With prolonged use, the jet nozzle 700 may shift or detach. Fissure in the nozzle will alter the jet direction, dispersing the originally concentrated jet. Therefore, in one embodiment, the jet nozzle 700 has a threaded hole on its surface near the air outlet panel 200, and the air outlet panel 200 has a mounting hole 710. The jet nozzle 700 is connected and fixed to the air outlet panel 200 by screws, which pass through the mounting hole 710 on the air outlet panel 200 and are threaded into the threaded hole. The screws are threadedly connected to the mounting holes 710 of the air outlet panel 200 and the threaded holes of the jet air outlet 700, providing a continuous and stable fastening force. This effectively resists vibrations during air conditioner operation and thermal expansion and contraction caused by temperature changes, preventing the jet air outlet 700 from loosening, shifting, or falling off. This ensures that the jet direction is always accurate and guarantees long-distance directional air delivery. The threaded connection allows for the removal of the jet air outlet 700 by unscrewing the screws. This makes it convenient to clean the dust inside the air outlet, replace air outlets of different specifications, or repair components in the air outlet space later, without damaging the air outlet or air outlet panel 200, reducing maintenance difficulty and cost. During installation, the threaded connection naturally achieves precise positioning of the jet air outlet 700, avoiding tilting or misalignment. This ensures that the air outlet direction of all jet air outlets 700 is consistent, forming a uniform and concentrated jet beam, avoiding problems such as dispersed air delivery and shortened distance caused by air outlet misalignment.

[0029] Fixed-direction jet vents 700 cannot adapt to the air supply needs of different apartment layouts and usage scenarios. Therefore, in one embodiment, the air outlet panel 200 is provided with a control panel 220, and all the jet vents 700 are electrically connected to the control panel 220 to control the direction of the jet vents 700. Through the electrical connection between the control panel 220 and the jet vents 700, users can flexibly adjust the direction of individual or all jet vents 700 according to their own needs. The jet vents 700 include a direction adjustment mechanism electrically connected to the control panel 220. It should be noted that the specific structure and working principle of the jet vents 700 are existing technologies and will not be described in detail here. The control panel 220 includes, but is not limited to, manual adjustment knobs, electric adjustment motors, or remote control devices.

[0030] In low-temperature environments, the heating efficiency of evaporators drops significantly, failing to meet basic heating needs. Therefore, in one embodiment, the electric heating module 600 is a PTC electric auxiliary heating module. PTC material can quickly reach its rated heating temperature after being energized, with rapid heat output. It can quickly reheat the airflow that has been initially heated by the evaporator, raising the outlet temperature in a short time. In cold northern regions, this effectively compensates for the insufficient heating efficiency of evaporators at low temperatures, rapidly increasing indoor temperature and solving the problems of slow heating and poor performance of traditional cabinet heaters.

[0031] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cabinet-style air outlet structure, characterized in that, It includes a housing, an air outlet panel, an evaporator assembly, a centrifugal impeller, a return air grille, an electric heating module, and multiple jet air outlets. The housing is provided with a first opening and a second opening. The evaporator assembly is inclined upwards from front to back within the housing along its depth direction, dividing the internal space of the housing into an upper air outlet space and a lower air inlet space. The first opening communicates with the air inlet space, and the second opening communicates with the air outlet space. The centrifugal impeller is disposed within the air inlet space, with its inlet end facing the first opening and its outlet end facing the air inlet side of the evaporator assembly, allowing the pressurized airflow from the centrifugal impeller to flow through the evaporator assembly and enter the air outlet space. The electric heating module is disposed on the side of the evaporator assembly facing the air outlet space. The return air grille is disposed on the housing and covers the first opening. The air outlet panel is disposed on the housing and covers the second opening, and the air outlet panel has multiple spaced air outlets. Multiple jet nozzles are detachably installed at their respective air outlets and communicate with the air outlet space to deliver air from the air outlet space in the form of jets.

2. The cabinet air outlet structure according to claim 1, characterized in that, It also includes two fixing brackets for fixing the evaporator assembly to the housing. The fixing brackets include a first plate and a second plate extending obliquely upward from front to back along the depth direction of the housing. The first plate is fixedly connected to the inner sidewall of the housing. The second plate is connected to the evaporator assembly by bolts.

3. The air outlet structure of a cabinet air conditioner according to claim 1, characterized in that, It also includes a water collection tank, which is located directly below the lower end of the evaporator assembly in the inclined direction, for collecting condensate that falls from the surface of the evaporator assembly.

4. The air outlet structure of a cabinet air conditioner according to claim 1, characterized in that, The return air grille includes a grille panel and multiple air inlets. The array of multiple air inlets is evenly arranged on the grille panel, and all the air inlets are connected to the air intake space.

5. The air outlet structure of a cabinet air conditioner according to claim 4, characterized in that, The return air grille also includes multiple baffles, which are disposed at the corresponding air inlets and tilted upward toward the air intake space to guide the incoming airflow and block foreign objects.

6. The air outlet structure of a cabinet air conditioner according to claim 1, characterized in that, The jet nozzle has a threaded hole on its surface near the air outlet panel. The air outlet panel has a mounting hole. The jet nozzle is connected and fixed to the air outlet panel by a screw. The screw passes through the mounting hole on the air outlet panel and is threaded into the threaded hole.

7. The cabinet air outlet structure according to claim 1, characterized in that, The air outlet panel is equipped with a control panel, and all the jet air outlets are electrically connected to the control panel to control the direction of the jet air outlets.

8. The air outlet structure of a cabinet air conditioner according to claim 1, characterized in that, The electric heating module is a PTC electric auxiliary heating module.

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