A cabinet air conditioner

Abstract

The application relates to the technical field of air conditioners, in particular to a cabinet air conditioner which comprises a cabinet body; an indoor cavity and an outdoor cavity are arranged in the cabinet body; the cabinet body is provided with an air inlet, an air outlet, an air return inlet and an air supply outlet; a side protection plate is arranged on the side of the indoor cavity far from the air return inlet; an electric control board is arranged between the side of the indoor cavity far from the air return inlet and the side protection plate; an upper protection plate is arranged on the top of an indoor air fan; and an interface plate is arranged between the upper protection plate and the top of the indoor cavity. The side protection plate arranged on the side of the indoor cavity far from the air return inlet separates the electric control board from the airflow channel of the indoor air fan, effectively preventing the airflow generated by the indoor air fan from directly blowing to the electric control board; in addition, the upper protection plate arranged on the top of the indoor air fan forms an independent interface plate mounting cavity between the upper protection plate and the top of the indoor cavity, so that the airflow cannot directly blow to the interface plate, and the problem of poor contact caused by dust accumulation and temperature change of the interface plate is solved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to a cabinet air conditioner. Background Technology

[0002] With the rapid development of 5G communication, industrial automation and data center industries, the integration and power density of electronic equipment in server racks are constantly increasing, which puts forward increasingly higher requirements for the cooling efficiency, reliability, maintainability and environmental adaptability of server rack air conditioners.

[0003] Currently, in mainstream miniature integrated cabinets in the industry, the internal electrical control boards (control boards, filter boards) and interface boards are usually directly exposed and installed in the airflow channel of the indoor fan. The continuous airflow generated by the indoor fan during operation blows directly onto the electronic components. The dust and moisture carried by the airflow will adhere to the surface of the circuit board, and long-term accumulation will lead to faults such as short circuits and corrosion. Furthermore, the direct airflow causes a sudden temperature change in electronic components, accelerating the aging of components such as capacitors and resistors, and significantly shortening the lifespan of the circuit board. At the same time, the vibration generated by the airflow can cause loose solder joints and poor contact of connectors, increasing the equipment failure rate. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a cabinet air conditioner.

[0005] The objective of this invention is achieved through the following technical solution: a cabinet air conditioner, comprising a cabinet body; the cabinet body is provided with an indoor cavity and an outdoor cavity; the outdoor cavity is provided with an outdoor fan and a condenser; the cabinet body is provided with an air inlet and an air outlet; the air inlet and the air outlet are respectively connected to the outdoor cavity; The indoor cavity is equipped with an indoor fan and an evaporator; the cabinet is equipped with a return air vent and a supply air vent; the return air vent and the supply air vent are respectively connected to the indoor cavity; the indoor fan is located on the side of the indoor cavity near the return air vent; a side protective plate is provided on the side of the indoor cavity away from the return air vent; an electrical control board is provided between the side of the indoor cavity away from the return air vent and the side protective plate; an upper protective plate is provided on top of the indoor fan in the indoor cavity; an interface plate is provided between the upper protective plate and the top of the indoor cavity.

[0006] The present invention is further configured such that the cabinet includes a middle frame, a front frame disposed on one side of the middle frame, and a rear frame disposed on the other side of the middle frame; one side of the middle frame and the front frame enclose the interior cavity; the other side of the middle frame and the rear frame enclose the exterior cavity. The air inlet and exhaust outlet are both located on the rear frame; the return air outlet and supply air outlet are both located on the front frame.

[0007] The present invention is further configured such that the side protective plate includes a side blocking plate extending along the height direction; the side blocking plate covers the side of the electrical control board near the indoor fan; the side blocking plate is provided with a clearance hole; and a sealant is provided between the side blocking plate and the electrical control board.

[0008] The present invention is further configured such that the side protective plate also includes a limiting plate extending horizontally at the top of the side blocking plate; The upper protective plate includes an upper blocking plate extending in the horizontal direction; the side of the upper blocking plate away from the front frame is detachably connected to a limiting plate; the upper protective plate also includes a connecting plate extending in the height direction at the top of the side of the upper blocking plate near the front frame.

[0009] The present invention is further configured such that a locking block is provided on the side of the upper blocking plate away from the front frame; and the limiting plate is provided with a locking groove that cooperates with the locking block. The connecting plate and the front frame, as well as the side baffle and the middle frame, are detachably connected by screws.

[0010] The present invention is further configured such that the indoor fan is connected to the front frame; the indoor fan is located at the return air vent; the evaporator is connected to the middle frame; and the evaporator is located at the air supply vent.

[0011] The present invention is further configured such that the indoor fan is located at the top of the evaporator; and the return air vent is located at the top of the supply air vent.

[0012] The present invention is further configured such that the condenser divides the outdoor cavity into an air inlet cavity and an air outlet cavity; the air inlet cavity is located at the bottom of the condenser; the air outlet cavity is located at the top of the condenser; the air outlet is connected to the air outlet cavity; the air inlet cavity is connected to the air inlet cavity; and the outdoor fan is an exhaust fan.

[0013] The present invention is further configured such that the condenser is inclinedly disposed in the outdoor cavity; the top of the condenser is disposed near the rear frame; and the bottom of the condenser is disposed near the middle frame. The outdoor fan is located near the rear frame; the cross-sectional shape of the outdoor fan, condenser, and exhaust cavity is trapezoidal.

[0014] The present invention is further configured such that dustproof mesh holes are provided at the return air inlet, the supply air inlet, the air inlet and the exhaust air outlet.

[0015] The invention is further configured such that the side protective plate includes a side blocking plate extending along the height direction; the side blocking plate covers the side of the electrical control board near the indoor fan; the top of the side blocking plate is provided with an air guiding slope. A cable tray is provided on the side of the side blocking plate near the electrical control board.

[0016] The beneficial effects of this invention are as follows: By setting a side protective plate on the side of the indoor cavity away from the air outlet, this invention isolates the electronic control board from the airflow channel of the indoor fan, effectively preventing the airflow generated by the indoor fan from blowing directly onto the electronic control board. This avoids sudden temperature changes, vibration fatigue, and dust and moisture accumulation on electronic components caused by long-term airflow impact. In addition, by setting an upper protective plate on the top of the indoor fan, an independent interface plate mounting cavity is formed between the upper protective plate and the top of the indoor cavity, separating the interface plate from the airflow channel of the indoor fan. This also prevents airflow from blowing directly onto the interface plate and solves the problem of poor contact caused by dust accumulation and temperature changes on the interface plate. Attached Figure Description

[0017] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a cross-sectional view from another perspective of the present invention; Figure 5 yes Figure 4 A magnified view of part A in the middle; Figure 6 This is an exploded view of the structure of the present invention; Figure 7 yes Figure 6 A magnified view of part B in the middle; Figure 8 This is an exploded view of the structure from another perspective of the present invention; Figure 9 This is a cross-sectional view of the second embodiment of the present invention; The components are as follows: 1. Front frame; 11. Indoor fan; 12. Return air vent; 13. Supply air vent; 2. Middle frame; 3. Rear frame; 31. Air inlet; 32. Exhaust air vent; 4. Indoor cavity; 41. Evaporator; 5. Outdoor cavity; 51. Air inlet cavity; 52. Exhaust cavity; 61. Outdoor fan; 62. Condenser; 7. Side protective plate; 71. Side baffle plate; 72. Limiting plate; 73. Clearance hole; 74. Slot; 75. Air guide slope; 8. Upper protective plate; 81. Upper baffle plate; 82. Connecting plate; 83. Locking block; 91. Electrical control board; 92. Interface board; 93. Dustproof mesh. Detailed Implementation

[0019] The present invention will be further described in conjunction with the following embodiments.

[0020] Depend on Figures 1 to 8 As can be seen, the cabinet air conditioner described in this embodiment includes a cabinet; the cabinet is provided with an indoor cavity 4 and an outdoor cavity 5; the outdoor cavity 5 is provided with an outdoor fan 61 and a condenser 62; the cabinet is provided with an air inlet 31 and an air outlet 32; the air inlet 31 and the air outlet 32 ​​are respectively connected to the outdoor cavity 5. The indoor cavity 4 is equipped with an indoor fan 11 and an evaporator 41; the cabinet is equipped with a return air vent 12 and an air supply vent 13; the return air vent 12 and the air supply vent 13 are respectively connected to the indoor cavity 4; the indoor fan 11 is located on the side of the indoor cavity 4 near the return air vent 12; a side protective plate 7 is provided on the side of the indoor cavity 4 away from the return air vent 12; an electrical control board 91 is provided between the side of the indoor cavity 4 away from the return air vent 12 and the side protective plate 7; an upper protective plate 8 is provided on the top of the indoor fan 11 in the indoor cavity 4; an interface plate 92 is provided between the upper protective plate 8 and the top of the indoor cavity 4.

[0021] Specifically, in the cabinet air conditioner described in this embodiment, when the indoor fan 11 is running, it drives the hot air in the computer room to enter the indoor cavity 4 from the return air vent 12. After heat exchange and cooling by the evaporator 41, the air is sent back to the computer room from the supply air vent 13 to complete the cooling cycle. The side protective plate 7 completely isolates the airflow channel between the electronic control board 91 and the indoor cavity 4, preventing high-speed airflow from blowing directly onto the wind-sensitive electronic components on the electronic control board 91, thus avoiding accelerated aging and damage of the components due to sudden temperature changes, vibration fatigue, and dust and moisture accumulation. The upper protective plate 8 forms an independent cavity on the top of the indoor fan 11, separating the interface board 92 from the airflow channel of the indoor cavity 4. This also prevents poor contact of the connectors caused by airflow blowing directly onto the interface board 92, and at the same time achieves partitioned protection between the electronic control board 91 and the interface board 92, thus extending the service life of the electronic control system.

[0022] The cabinet air conditioner described in this embodiment includes a middle frame 2, a front frame 1 disposed on one side of the middle frame 2, and a rear frame 3 disposed on the other side of the middle frame 2; one side of the middle frame 2 and the front frame 1 enclose the indoor cavity 4; the other side of the middle frame 2 and the rear frame 3 enclose the outdoor cavity 5. The air inlet 31 and the air outlet 32 ​​are both located on the rear frame 3; the return air outlet 12 and the supply air outlet 13 are both located on the front frame 1.

[0023] Specifically, the middle frame 2 serves as an isolation structure between the indoor cavity 4 and the outdoor cavity 5, preventing rainwater and dust from the outdoor cavity 5 from penetrating into the indoor cavity 4, thus improving the overall waterproof performance of the cabinet air conditioner. In addition, the cabinet is divided into a front frame 1, a middle frame 2, and a rear frame 3, which facilitates modular disassembly and maintenance. When disassembling the front frame 1, the entire indoor cavity 4 can be directly exposed without disassembling the middle frame 2 and the rear frame 3, effectively reducing the difficulty of maintenance. Furthermore, the air inlet 31 and the exhaust vent 32 are concentrated in the rear frame 3, and the return air vent 12 and the supply air vent 13 are concentrated in the front frame 1, so that the indoor and outdoor airflows are completely separated without cross-flow, effectively improving the heat exchange efficiency of the refrigeration system.

[0024] The cabinet air conditioner described in this embodiment includes a side protective plate 71 extending along the height direction; the side protective plate 71 covers the side of the electrical control board 91 near the indoor fan 11; the side protective plate 71 is provided with a clearance hole 73; and a sealant is provided between the side protective plate 71 and the electrical control board 91.

[0025] Specifically, the side baffle 71 vertically covers the side of the electronic control board 91 facing the indoor fan 11, forming a complete airflow barrier to prevent the airflow in the indoor cavity 4 from blowing towards the electronic control board 91. In addition, the clearance hole 73 allows longer electronic components on the electronic control board 91 that are not afraid of wind to pass through, minimizing the gap between the side baffle 71 and the electronic control board 91, which can effectively save the installation space in the indoor cavity 4. At the same time, the clearance hole 73 can also be used as a glue channel. During installation, the side baffle 71 and the electronic control board 91 are aligned first so that the long components pass through the clearance hole 73, and then sealant is injected into the gap between the two through the clearance hole 73. After the sealant cures, it completely seals and wraps most of the shorter electronic components on the electronic control board 91 that are afraid of wind, dust and moisture, thus taking into account both protection and space utilization.

[0026] The cabinet air conditioner described in this embodiment further includes a limiting plate 72 extending horizontally and disposed at the top of the side guard plate 71; The upper protective plate 8 includes an upper blocking plate 81 extending in the horizontal direction; the side of the upper blocking plate 81 away from the front frame 1 is detachably connected to the limiting plate 72; the upper protective plate 8 also includes a connecting plate 82 extending in the height direction at the top of the side of the upper blocking plate 81 near the front frame 1.

[0027] Specifically, the limiting plate 72 at the top of the side baffle 71 provides an installation positioning reference for the upper protective plate 8, ensuring that the upper baffle 81 is installed horizontally and fits tightly with the side protective plate 7, eliminating the gap between the two and preventing the airflow of the indoor cavity 4 from entering the installation cavity of the interface plate 92 through the gap; the upper baffle 81 horizontally covers the top of the indoor fan 11, blocking the airflow of the indoor cavity 4; the connecting plate 82 extends upward to connect with the front frame 1, so that the upper protective plate 8, the front frame 1, and the side protective plate 7 together enclose the closed installation space of the interface plate 92, isolating the airflow of the indoor cavity 4; Alternatively, the side of the upper baffle plate 81 away from the front frame 1 can be detachably connected to the limiting plate 72, so that the upper protective plate 8 can be removed separately, and the interface plate 92 can be maintained without disassembling the side protective plate 7 and the electronic control plate 91.

[0028] In this embodiment of the cabinet air conditioner, the upper baffle plate 81 is provided with a locking block 83 on the side away from the front frame 1; the limiting plate 72 is provided with a locking groove 74 that cooperates with the locking block 83; The connecting plate 82 and the front frame 1, as well as the side baffle plate 71 and the middle frame 2, are detachably connected by screws.

[0029] Specifically, during installation, the upper baffle plate 81 is first inserted into the slot 74 of the limiting plate 72 to pre-position the upper protective plate 8 without the need for additional manual support. Then, the connecting plate 82 is fastened to the front frame 1 and the side baffle plate 71 is fastened to the middle frame 2 with screws to ensure the connection strength. During disassembly, the screws are first unscrewed, and then the baffle plate 83 is pulled out of the slot 74 to quickly remove the side protective plate 7 and the upper protective plate 8. When maintaining the electronic control board 91 and the interface board 92, there is no need to disassemble other components.

[0030] In this embodiment, a cabinet air conditioner is described, wherein the indoor fan 11 is connected to the front frame 1; the indoor fan 11 is located at the return air vent 12; the evaporator 41 is connected to the middle frame 2; and the evaporator 41 is located at the air supply vent 13. Specifically, the indoor fan 11 is integrated and fixed with the front frame 1. When the front frame 1 is disassembled, the indoor fan 11 is removed along with the front frame 1, completely releasing the internal space of the indoor cavity 4. The control board 91, interface board 92, and other internal components can be maintained without disassembling the evaporator 41. In addition, the indoor fan 11 is located at the return air vent 12 and the evaporator 41 is located at the air supply vent 13, so that hot air is first pressurized by the indoor fan 11 and then flows evenly through the evaporator 41 for heat exchange, thereby improving the utilization rate of the heat exchange area of ​​the evaporator 41.

[0031] In this embodiment, a cabinet air conditioner is described, wherein the indoor fan 11 is located at the top of the evaporator 41, and the return air vent 12 is located at the top of the supply air vent 13. Specifically, the indoor fan 11 draws hot air from the server room through the top return air vent 12, pressurizes it downwards, and flows through the evaporator 41 for heat exchange. The cooled air is then delivered into the server room from the bottom supply air vent 13, thereby increasing the overall heat exchange efficiency.

[0032] In this embodiment, a cabinet air conditioner is described, wherein the condenser 62 divides the outdoor cavity 5 into an air inlet cavity 51 and an air outlet cavity 52; the air inlet cavity 51 is located at the bottom of the condenser 62; the air outlet cavity 52 is located at the top of the condenser 62; the air outlet 32 ​​is connected to the air outlet cavity 52; the air inlet 31 is connected to the air inlet cavity 51; and the outdoor fan 61 is an exhaust fan.

[0033] Specifically, in the cabinet air conditioner described in this embodiment, when the outdoor fan 61 of the exhaust type is running, a negative pressure environment is created in the outdoor cavity 5, driving outside air to enter the air intake cavity 51 from the air inlet 31, pass through the condenser 62 from bottom to top to complete heat exchange, and then enter the exhaust cavity 52 at the top, and finally be discharged outward from the exhaust port 32. This airflow direction ensures that all dust, oil, and other contaminants in the air adhere to the outer air intake surface of the condenser 62, and most of the dust and oil in the air cannot enter the inner side of the condenser 62, thus solving the problem of dirt clogging inside the condenser 62. At the same time, the airflow is continuously discharged from the exhaust port 32, which can effectively prevent freezing rain, snow, hail, etc. from entering the outdoor fan 61 and the exhaust cavity 52.

[0034] In this embodiment of the cabinet air conditioner, the condenser 62 is inclinedly disposed in the outdoor cavity 5. After the condenser 62 forms a certain angle with the horizontal plane, the dust attached to the outer surface of the condenser 62 will slowly slide down and fall off along the inclined surface of the condenser 62 under the action of gravity. When it rains outdoors, the rainwater will form a continuous scouring water flow on the inclined surface of the condenser 62, which will carry away the residual dust, catkins and other impurities, and play a self-cleaning role. The top of the condenser 62 is located near the rear frame 3; the bottom of the condenser 62 is located near the middle frame 2; this inclined direction allows the air inlet side of the condenser 62 to face the air inlet 31. After the outside air enters from the bottom air inlet cavity 51, it can be evenly distributed along the inclined surface of the condenser 62 and pass through the fin gaps, avoiding heat exchange dead zones and improving the utilization rate of the overall heat exchange area of ​​the condenser 62. The outdoor fan 61 is positioned near the rear frame 3. The cross-sectional shape of the outdoor fan 61, condenser 62, and exhaust cavity 52 is trapezoidal. The trapezoidal cross-section formed by the outdoor fan 61, condenser 62, and exhaust cavity 52 constitutes a gradually widening airflow channel. As the airflow enters from the narrow end of the condenser 62 and flows towards the wide end of the outdoor fan 61, it can effectively reduce the generation of airflow eddies and turbulence, reduce wind resistance loss, and improve the air delivery efficiency of the outdoor fan 61. At the same time, this trapezoidal layout maximizes the effective heat exchange area of ​​the condenser 62 without increasing the overall thickness of the cabinet.

[0035] In this embodiment, a cabinet air conditioner is provided with dustproof mesh holes 93 at the return air vent 12, the supply air vent 13, the air inlet vent 31, and the exhaust air vent 32. This design prevents dust from entering the indoor cavity 4 and the outdoor cavity 5.

[0036] Example 2, as Figure 9As shown in the embodiment, the side protective plate 7 includes a side baffle plate 71 extending along the height direction; the side baffle plate 71 covers the side of the electrical control board 91 near the indoor fan 11; the top of the side baffle plate 71 is provided with an air guiding slope 75.

[0037] Unlike Embodiment 1, the side baffle 71 does not need to be provided with clearance holes 73. The side baffle 71 adopts a full shielding method, which simultaneously shields all electronic components on the electronic control board 91, and there is no need to apply glue between the side baffle 7 and the electronic control board 91. The above arrangement makes the distance between the side baffle 71 and the indoor fan 11 relatively close, so the return air of the indoor fan 11 is guided downward by providing the air guide slope 75. The side baffle 71 is provided with a wire passage groove on the side near the electronic control board 91; the wire passage groove is not shown in the figure; with the above setting, the connecting wires on the circuit board can enter the cavity between the top of the upper protective plate 8 and the inner cavity 4 through the wire passage groove, thereby facilitating the connection wire disassembly and wiring during maintenance and repair.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A rack-mounted air conditioner, characterized in that: Includes a cabinet; the cabinet is provided with an inner cavity (4) and an outer cavity (5); the outer cavity (5) is provided with an outdoor fan (61) and a condenser (62); the cabinet is provided with an air inlet (31) and an air outlet (32); the air inlet (31) and the air outlet (32) are respectively connected to the outer cavity (5); The indoor cavity (4) is provided with an indoor fan (11) and an evaporator (41); the cabinet is provided with a return air vent (12) and an air supply vent (13); the return air vent (12) and the air supply vent (13) are respectively connected to the indoor cavity (4); the indoor fan (11) is located on the side of the indoor cavity (4) near the return air vent (12); a side protective plate (7) is provided on the side of the indoor cavity (4) away from the return air vent (12); an electrical control board (91) is provided between the side of the indoor cavity (4) away from the return air vent (12) and the side protective plate (7); an upper protective plate (8) is provided on the top of the indoor fan (11) in the indoor cavity (4); an interface plate (92) is provided between the upper protective plate (8) and the top of the indoor cavity (4).

2. A cabinet air conditioner according to claim 1, characterized in that: The cabinet includes a middle frame (2), a front frame (1) located on one side of the middle frame (2), and a rear frame (3) located on the other side of the middle frame (2); one side of the middle frame (2) and the front frame (1) enclose the interior cavity (4); the other side of the middle frame (2) and the rear frame (3) enclose the exterior cavity (5). The air inlet (31) and air outlet (32) are both located on the rear frame (3); the return air outlet (12) and air supply outlet (13) are both located on the front frame (1).

3. A cabinet air conditioner according to claim 2, characterized in that: The side protection plate (7) includes a side baffle plate (71) extending along the height direction; the side baffle plate (71) covers the side of the electrical control board (91) near the indoor fan (11); the side baffle plate (71) is provided with a clearance hole (73); and a sealant is provided between the side baffle plate (71) and the electrical control board (91).

4. A cabinet air conditioner according to claim 3, characterized in that: The side guard plate (7) also includes a limiting plate (72) extending horizontally and disposed on the top of the side guard plate (71); The upper protective plate (8) includes an upper blocking plate (81) extending in the horizontal direction; the side of the upper blocking plate (81) away from the front frame (1) is detachably connected to the limiting plate (72); the upper protective plate (8) also includes a connecting plate (82) extending in the height direction at the top of the side of the upper blocking plate (81) near the front frame (1).

5. A cabinet air conditioner according to claim 4, characterized in that: The upper baffle plate (81) is provided with a locking block (83) on the side away from the front frame (1); the limiting plate (72) is provided with a locking groove (74) that cooperates with the locking block (83); The connecting plate (82) is detachably connected to the front frame (1) and the side baffle plate (71) is detachably connected to the middle frame (2) by screws.

6. A cabinet air conditioner according to claim 2, characterized in that: The indoor fan (11) is connected to the front frame (1); the indoor fan (11) is located at the return air inlet (12); the evaporator (41) is connected to the middle frame (2); the evaporator (41) is located at the air supply outlet (13).

7. A cabinet air conditioner according to claim 6, characterized in that: The indoor fan (11) is located on top of the evaporator (41); the return air vent (12) is located on top of the supply air vent (13).

8. A cabinet air conditioner according to claim 2, characterized in that: The condenser (62) divides the outdoor cavity (5) into an air inlet cavity (51) and an air outlet cavity (52); the air inlet cavity (51) is located at the bottom of the condenser (62); the air outlet cavity (52) is located at the top of the condenser (62); the air outlet (32) is connected to the air outlet cavity (52); the air inlet (31) is connected to the air inlet cavity (51); the outdoor fan (61) is an exhaust fan.

9. A cabinet air conditioner according to claim 8, characterized in that: The condenser (62) is inclinedly disposed in the outdoor cavity (5); the top of the condenser (62) is disposed near the rear frame (3); the bottom of the condenser (62) is disposed near the middle frame (2); The outdoor fan (61) is located near the rear frame (3); the cross-sectional shape of the outdoor fan (61), condenser (62) and exhaust cavity (52) is trapezoidal.

10. A cabinet air conditioner according to claim 2, characterized in that: The side protection plate (7) includes a side baffle plate (71) extending along the height direction; the side baffle plate (71) covers the side of the electrical control board (91) near the indoor fan (11); the top of the side baffle plate (71) is provided with a guide slope (75).

Images