Multi-vehicle universal top integrated electric air conditioner

Abstract

The utility model relates to a kind of roof type integrated machine electric air conditioner of general multi-vehicle, including outdoor, indoor unit;Outdoor unit includes outer casing, and heat dissipation component, refrigeration component, coolant pipe and compressor are equipped in outer casing, and the partition structure that will heat dissipation and refrigeration component are separated is equipped in outer casing, and form refrigeration side and heat dissipation side;In the outer casing on refrigeration side, interval is equipped with inner air inlet, inner air outlet passage, and inner air inlet, inner air outlet passage and the internal space of outer casing of refrigeration side form inner circulation air duct;Refrigeration component includes evaporator and evaporative fan, and evaporative fan and evaporator are sequentially arranged in inner circulation air duct according to airflow direction;Outer casing is equipped with a flow guide water baffle, and flow guide water baffle is located between inner air outlet passage and evaporator, to prevent the air flowing through evaporator from bringing condensate on evaporator into inner air outlet passage.

Description

Technical Field

[0001] This utility model belongs to the technical field of air handling equipment applicable to the passenger compartment or cargo compartment of vehicles, specifically relating to a roof-mounted integrated electromechanical air conditioner that is universal for multiple vehicle models. Background Technology

[0002] A roof-mounted parking air conditioning unit is installed on the roof (or sunroof) of the driver's cab in some vehicle models to regulate the air temperature inside the cab. Part of it is exposed outside the cab, while another part extends into the cab through an opening in the cab. The portion extending into the cab typically has an internal air inlet, an internal air outlet, and a control panel, while the exposed portion usually has a cooling air inlet and a cooling air outlet. The main components of a roof-mounted parking air conditioning unit include a housing and, within the housing, an evaporator, an internal circulation fan, a condenser, a cooling fan, and a compressor. It features good integration and is easy to install and use.

[0003] Existing typical rooftop integrated parking air conditioning units can be found in Chinese patent applications CN217099605U and CN214492456U. Taking the technical solution disclosed in CN214492456U as an example, in the airflow direction of the internal refrigeration cycle, air from the cab is drawn in through the internal air inlet, flows through the evaporator for heat exchange, reaches the fan, and is then blown out by the fan towards the internal air outlet. This form of refrigeration, where air is drawn in and flows through the evaporator, is called the "suction" form. The advantage is that the air velocity is low when it flows through the evaporator, and the condensate generated on the evaporator surface during heat exchange is not easily removed by the airflow, making it easy to simply set up a condensate tray below the evaporator to collect and drain the condensate. The disadvantage is that the air velocity and air pressure are low when flowing through the evaporator, resulting in insufficient heat exchange and insufficient cooling effect on the cab.

[0004] Another type of parking air conditioning unit with an internal cooling circulation airflow direction exists in the prior art, as disclosed in Chinese patent application CN 115366608 A. In this internal cooling circulation airflow direction, the fan draws in air from the driver's cab, which is then blown towards the evaporator. The high-speed airflow undergoes heat exchange through the evaporator and then returns to the driver's cab from the internal air outlet. This method of drawing in air and blowing it towards the evaporator to achieve heat exchange and cooling is called the "blowing" method. Its advantage is that the gas pressure flowing through the evaporator is high, resulting in better cooling of the driver's cab. However, the increased gas pressure causes condensate on the evaporator surface to be easily blown away in a parabolic trajectory with the airflow. If the internal air outlet is located within the range of the parabolic trajectory of the evaporator condensate, as described in CN115366608A... Figure 2As shown, condensate is very likely to drip out from the inner air outlet, affecting its use; if the inner air outlet is located outside the range of the evaporator condensate being blown away in a parabolic trajectory, then the distance between the inner air outlet and the evaporator will be large, which will lead to an increase in the length of the parking air conditioner, resulting in increased costs and reduced applicability of the installation.

[0005] To address the aforementioned issues, existing technologies include solutions such as the one disclosed in Chinese patent application CN213291915U. This involves extending the airflow channel after the evaporator and circling it in a volute shape above the cooling chamber, then connecting it to the lower inner air outlet. This prevents the fan from blowing directly onto the evaporator and carrying away condensate, which then flows out through the inner air outlet. However, this results in a longer airflow channel and increases the height of the parking air conditioner, leading to a greater exposed portion on the roof and increased wind resistance. CN114435072A's thinner parking air conditioner proposes a solution where the exposed portion on the roof is as thin as possible, but it is an improved "suction" type solution.

[0006] Therefore, how to prevent evaporator condensate from flowing out of the internal air outlet under the "blowing" mode, and how to effectively control the size (length, width, and height) of the parking air conditioner, still needs further research and improvement.

[0007] Common parking air conditioner water-blocking structures, such as Chinese patent applications CN117533097A and CN218805084U, involve waterproof baffles, drip trays, and other leak-proof forms. However, these are all applied to situations where condensate is relatively controlled in the "suction" mode. The drip tray in CN218805084U also has an extended inclined support. In this solution, the airflow drawn in by the cross-flow fan passes through the evaporator, then bypasses the top of the cross-flow fan and blows towards the lower inner air outlet. The inclined support only provides support for the cross-flow fan it uses. Summary of the Invention

[0008] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a roof-mounted integrated electromechanical air conditioner that is universal for multiple vehicle models, to prevent evaporator condensate from flowing out of the internal air outlet in the "blowing" mode, and to effectively control the size of the parking air conditioner.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A multi-model, universally compatible roof-mounted integrated air conditioning system, including an outdoor unit and an indoor unit;

[0011] The outdoor unit includes an outdoor unit housing, inside which are provided a heat dissipation component, a refrigeration component, and a compressor connected to the heat dissipation component and the refrigeration component via refrigerant pipes. The outdoor unit housing is provided with a partition structure that separates the heat dissipation component and the refrigeration component, so that the space where the refrigeration component is located inside the outdoor unit housing is formed as the refrigeration side, and the space where the heat dissipation component is located inside the outdoor unit housing is formed as the heat dissipation side.

[0012] An internal air inlet channel and an internal air outlet channel are provided on the outdoor unit casing on the cooling side. The internal air inlet channel, the internal air outlet channel and the internal space of the outdoor unit casing on the cooling side form an internal circulation air duct.

[0013] The refrigeration components include an evaporator and an evaporator fan. Within the internal circulation duct, the evaporator fan and evaporator are sequentially arranged according to the airflow direction from the internal air inlet channel to the internal air outlet channel. The evaporator fan draws in air from the internal air inlet channel and blows it towards the evaporator. After passing through the evaporator, the air flows out from the internal air outlet channel.

[0014] An air guide and water baffle is installed inside the outdoor unit housing. The air guide and water baffle is located between the inner air outlet channel and the evaporator to prevent the air flowing through the evaporator from carrying the condensate on the evaporator into the inner air outlet channel.

[0015] The outdoor unit casing has a drainage channel for draining condensate from the cooling side.

[0016] To further improve the above technical solution, the internal air outlet channel is located on the side of the evaporator away from the evaporator fan.

[0017] Furthermore, the internal air outlet duct is located on the bottom wall of the outdoor unit housing, and the edge of the internal air outlet duct on the cooling side is higher than the position where the guide channel connects to the cooling side;

[0018] The water-repellent baffle protrudes from the inner surface of the bottom wall of the outdoor unit housing and extends upward and synchronously toward the inner air outlet channel, so that the evaporator condensate carried by the air flowing through the evaporator falls on the side of the water-repellent baffle that is away from the inner air outlet channel.

[0019] Furthermore, the internal air outlet channel extends along the length of the evaporator, and the length of the guide water baffle is greater than the length of the internal air outlet channel, with both ends extending beyond the internal air outlet channel.

[0020] Furthermore, the edge of the internal air outlet duct protrudes towards the interior of the outdoor unit housing to form a water-blocking ring, and the straight section of the water-blocking ring near the evaporator continues to extend upward to form the guide water-blocking cover.

[0021] Furthermore, the free end of the upward-extending water-retaining cover completely covers the area directly above the internal air outlet duct.

[0022] Furthermore, there is a gap between the free end of the upward-extending guide shield and the inner wall of the opposite outer casing.

[0023] Furthermore, the cross-section of the guide shield is arc-shaped, with the convex side facing the evaporator.

[0024] Furthermore, the height of the upward extension of the guide shield is no less than 1 / 2 of the height of the evaporator.

[0025] Furthermore, the inner surface of the bottom wall of the outdoor unit casing facing the evaporator gradually rises away from the water guide shield, forming an inclined surface, and the evaporator is located above the inclined surface.

[0026] Furthermore, the evaporator is tilted toward the side of the guide flow baffle.

[0027] Furthermore, the evaporator is tilted at an angle of 5-15° relative to the vertical.

[0028] Furthermore, the highest point of the guide shield is not lower than the vertical middle position of the evaporator.

[0029] Furthermore, the heat dissipation components include a condenser and a condenser cooling fan. In the front-to-back direction of the outdoor unit casing, the evaporator, evaporator fan, compressor, condenser, and condenser cooling fan are arranged sequentially to position the heavy compressor in the center, thus facilitating a balanced center of gravity and providing strong vibration resistance during use. The air intake of the condenser cooling fan passes through the compressor, which also helps dissipate heat from the compressor.

[0030] Furthermore, the evaporator adopts a double-layer parallel flow core, with its length direction corresponding to the width direction of the outer casing;

[0031] The evaporator fan is a twin-shaft centrifugal fan, with its axial direction corresponding to the width direction of the outer casing;

[0032] The compressor is an electric compressor, and its axial direction corresponds to the width direction of the outer casing.

[0033] The condenser adopts a double-layer flat tube structure, with its length direction corresponding to the width direction of the outdoor unit casing, and its width direction being vertical.

[0034] Furthermore, the outdoor unit housing includes an air conditioner base plate and an air conditioner cover that is fastened to the air conditioner base plate. The heat dissipation components and the compressor are both mounted on the air conditioner base plate.

[0035] The evaporator and evaporator fan are also mounted on the air conditioner base plate.

[0036] Both the internal air intake and internal air outlet ducts are located on the base plate of the air conditioner unit.

[0037] The internal air intake duct is located below the evaporator fan.

[0038] The airflow channel is located on the base plate of the air conditioner.

[0039] Furthermore, an evaporator cover is connected to the air conditioner base plate, and the partition structure is formed by the evaporator cover, with the compressor located outside the evaporator cover.

[0040] Furthermore, the guide channels are symmetrically arranged on the left and right sides of the air conditioner base plate, and the condensate is discharged to the outside of the evaporator cover and the middle water level on the air conditioner base plate to facilitate heat dissipation. The guide channels continue to extend symmetrically to the left and right behind the middle water level, and a low-level drain hole is opened through the rear end of the air conditioner base plate. The height of the opening of the low-level drain hole is flush with the bottom wall of the guide channels and the middle water level. At the front of the guide channels, a high-level drain hole is also opened through the air conditioner base plate. The opening height of the high-level drain hole is higher than the bottom wall of the guide channels.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] This utility model is a multi-model universal roof-mounted integrated air conditioner that can prevent evaporator condensate from flowing out of the internal air outlet in the "blowing" mode, and effectively control the volume of the roof-mounted integrated unit. The length, width and height dimensions are well controlled, making it suitable for installation in various vehicle models.

[0043] Specifically, the evaporator fan draws in air through the inner air inlet duct. After reaching the evaporator, the air is blown towards the evaporator by the fan. The high-speed airflow undergoes heat exchange within the evaporator and then flows out through the inner air outlet duct. Because a deflector and water-blocking shield are specifically installed between the inner air outlet duct and the evaporator, even if the high-speed airflow blown towards the evaporator carries away condensate from the evaporator during heat exchange, the deflector and water-blocking shield prevents the airflow from further carrying the condensate into the inner air outlet duct, thus blocking the condensate. The airflow bypasses the deflector and flows out through the inner air outlet duct. The outdoor unit works in conjunction with the indoor unit; the indoor unit's inner air inlet is connected to the inner air inlet duct, and its inner air outlet is connected to the inner air outlet duct. When in use, it can prevent the condensate from flowing out of the inner air outlet in the "blowing" mode. The condensate is designed to be guided to the guide channel and discharged to the cooling side. Because of the existence of the guide water baffle, the inner air outlet channel can be set on the side of the evaporator away from the evaporator fan, effectively controlling the volume of the top-mounted integrated unit. The height and length dimensions are well controlled.

[0044] Due to its compact structure, small size, and powerful cooling capacity, this multi-vehicle integrated roof-mounted air conditioner is suitable for installation in various vehicle types, including but not limited to tricycles, light trucks, heavy trucks, and low-speed electric vehicles. Installation is simple: just create corresponding through holes in the cab roof according to the dimensions of the outdoor and indoor units (if there's a sunroof, use the sunroof location; if the original sunroof is too large, replace the roof panel where the sunroof is located and create the corresponding through holes in the replacement panel), without needing to decorate the inner panel.

[0045] It is not limited to use while parked; it can be used while driving or parked.

[0046] This utility model relates to a multi-vehicle universal rooftop integrated electromechanical air conditioner. Designed and manufactured to meet the indoor cooling needs of various vehicles, including heavy trucks, light trucks, tricycles, and electric four-wheelers, it features an evaporator, evaporator fan, compressor, condenser, and condenser cooling fan arranged sequentially along the front-rear direction of the outdoor unit casing. Based on this arrangement, a "blowing" cooling cycle is required. Furthermore, the evaporator employs a double-layer parallel flow core, with its length corresponding to the width of the outdoor unit casing; the evaporator fan is a dual-shaft centrifugal fan, with its axial direction corresponding to the width of the outdoor unit casing; the compressor is an electric compressor, with its axial direction corresponding to the width of the outdoor unit casing; the condenser is a double-layer flat tube condenser, with its length corresponding to the width of the outdoor unit casing and its width direction vertical, mounted at a 90° angle to the air conditioner base plate via a fan cover; and the condenser cooling fan uses two small-diameter, ultra-thin motors arranged side-by-side. Through a series of systematic and professional designs, both cooling capacity and compact size are considered, thus achieving a universal effect. The heavy compressor is positioned in the middle to facilitate balance and reduce vibration. A specially designed deflector and water baffle prevent evaporator condensate from flowing out of the internal air outlet, ensuring a good user experience. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of a multi-vehicle integrated electromechanical air conditioner, as shown in a specific embodiment.

[0048] Figure 2 for Figure 1 A bottom view;

[0049] Figure 3 for Figure 1 The right view;

[0050] Figure 4 for Figure 3 Cross-sectional view of AA (the arrows in the figure indicate the direction of airflow in the internal circulation).

[0051] Figure 5 for Figure 4 The schematic diagram of the indoor units was removed from the original diagram.

[0052] Figure 6 A perspective view of a multi-vehicle integrated electromechanical air conditioner, as shown in a specific embodiment;

[0053] Figure 7 An exploded view of a multi-vehicle integrated electromechanical air conditioner, as shown in a specific embodiment;

[0054] Figure 8 This is a schematic diagram of the refrigerant pipe connection in a multi-vehicle integrated electromechanical air conditioning system, which is applicable to multiple vehicle models, as shown in a specific embodiment.

[0055] Figure 9 This is a perspective view of the air conditioning base plate in a multi-vehicle integrated electromechanical air conditioning system, which is applicable to a specific embodiment (the arrows in the figure indicate the air intake direction of the evaporator fan).

[0056] Figure 10 This is a perspective view of the air conditioning base plate in a multi-model integrated roof-mounted electromechanical air conditioning system, as shown in a specific embodiment.

[0057] Figure 11 This is a top view of the air conditioning base plate in a multi-vehicle integrated electromechanical air conditioning system, as described in a specific embodiment.

[0058] Figure 12 A perspective view of the inner unit housing in a multi-vehicle universal roof-mounted integrated electromechanical air conditioner, as shown in a specific embodiment;

[0059] Figure 13 A perspective view of the evaporator cover in a multi-vehicle integrated roof-mounted air conditioning system, as shown in a specific embodiment;

[0060] Figure 14 This is a perspective view of the evaporator cover in a multi-vehicle integrated roof-mounted air conditioning system, which is applicable to a specific embodiment.

[0061] Figure 15 This is a perspective view of the inner unit housing of a multi-vehicle integrated roof-mounted air conditioner, which is used in a specific embodiment.

[0062] Figure 16 This is a perspective view of the refrigeration component in a multi-vehicle integrated electromechanical air conditioning system, as described in a specific embodiment.

[0063] Figure 17 This is a schematic diagram showing the external dimensions of the multi-model integrated roof-mounted air conditioner applicable to this application;

[0064] Figure 18 This is a schematic diagram showing the external dimensions of Yune's parking air conditioners currently on the market;

[0065] Figure 19 This is a schematic diagram showing the external dimensions of Haier's parking air conditioners currently on the market;

[0066] Figure 20 This is a schematic diagram showing the external dimensions of Gree's parking air conditioners currently on the market.

[0067] Figure 21 A perspective view of a multi-vehicle universal roof-mounted integrated electromechanical air conditioner with the air conditioner cover removed, as shown in the embodiment.

[0068] Figure 22 for Figure 21 A 3D view of the mid-top integrated air conditioner with the evaporator cover further removed;

[0069] Figure 23 A schematic diagram showing the structure of the two upper volutes of the integrated evaporator casing and the fixed upper cover corresponding to the upper half of the motor mounting base, which are fastened and connected to the air conditioner base plate.

[0070] Figure 24 A schematic diagram of the structure of the casing portion of the integrated evaporator;

[0071] The components include: outdoor unit 100, indoor unit 200, cooling side 300, heat dissipation side 400, outdoor unit casing 1, air conditioner base plate 11, internal air intake channel 111, internal air outlet channel 112, water guide cover 113, water guide channel 114, low-level drain hole 1141, high-level drain hole 1142, water baffle ring 115, water inlet 116, inclined surface 117, intermediate submerged water level 118, support mounting point 119, air conditioner cover 12, external air inlet 121, external air outlet 122, heat dissipation components 2, condenser 21, and cooling... Condenser cooling fan 22, fan housing 23, support lug 24, refrigeration component 3, evaporator 31, 90-degree outlet pipe H-shaped expansion valve 311, evaporator fan 32, refrigerant pipe 4, compressor 5, partition structure 6, evaporator outer cover 61, indoor unit housing 211, inner air inlet 212, inner air outlet 213, control panel 214, partition plate 215, bolt connection point 216, air outlet guide foam tube 7, evaporator mounting position 101, evaporator fan mounting position 102, compressor mounting position 103, heat dissipation component mounting position 104. Detailed Implementation

[0072] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0073] Please see Figures 1-8 The specific embodiment of the multi-vehicle universal roof-mounted integrated electromechanical air conditioner includes an outdoor unit 100 and an indoor unit 200.

[0074] The outdoor unit 100 includes an outdoor unit housing 1. The outdoor unit housing 1 is provided with a heat dissipation component 2, a cooling component 3, and a compressor 5 connected to the heat dissipation component 2 and the cooling component 3 through a refrigerant pipe 4. The outdoor unit housing 1 is provided with a partition structure 6 that separates the heat dissipation component 2 and the cooling component 3, so that the space where the cooling component 3 is located in the outdoor unit housing 1 is formed as the cooling side 300, and the space where the heat dissipation component 2 is located in the outdoor unit housing 1 is formed as the heat dissipation side 400. Of course, the refrigerant pipe 4 must pass through or bypass the partition structure to make the connection.

[0075] An internal air inlet channel 111 and an internal air outlet channel 112 are provided on the outdoor unit housing 1 of the cooling side 300 at intervals. The internal air inlet channel 111, the internal air outlet channel 112 and the internal space of the outdoor unit housing 1 of the cooling side 300 form an internal circulation air duct.

[0076] The refrigeration component 3 includes an evaporator 31 and an evaporator fan 32. In the inner circulation duct, the evaporator fan 32 and the evaporator 31 are arranged in sequence according to the airflow direction from the inner air inlet channel 111 to the inner air outlet channel 112. The evaporator fan 32 draws in air from the inner air inlet channel 111 and blows it out toward the evaporator 31. After the air flows through the evaporator 31, it flows out from the inner air outlet channel 112 to form a blowing refrigeration cycle.

[0077] An air guide and water baffle 113 is provided inside the outer casing 1. The air guide and water baffle 113 is located between the inner air outlet channel 112 and the evaporator 31 to prevent the air flowing through the evaporator 31 from carrying the condensate on the evaporator 31 into the inner air outlet channel 112.

[0078] Please see Figure 10 and Figure 11 The outdoor unit casing 1 has a guide channel 114 for draining the condensate in the cooling side 300. It is generally located on the side and can play a role in connecting and guiding the condensate to a location other than the indoor unit 200. The specific form is not limited.

[0079] In this embodiment, a multi-vehicle universal roof-mounted integrated air conditioner draws air in through the inner air intake duct 111. After reaching the evaporator fan 32, air is blown out towards the evaporator 31. The high-speed airflow undergoes heat exchange in the evaporator 31 and then flows out through the inner air outlet duct 112. Because a deflector 113 is specifically installed between the inner air outlet duct 112 and the evaporator 31, even if the high-speed airflow blown by the evaporator fan 32 carries away condensate from the evaporator 31 during heat exchange, the deflector 113 prevents the airflow from further carrying the condensate into the inner air outlet duct 112. The deflector 113 blocks the condensate, while the airflow bypasses the deflector 113 and flows out through the inner air outlet duct 112. It is understood that the outdoor unit 100 works in conjunction with the indoor unit 200, as shown in [reference needed]. Figure 12 The indoor unit 200 has an internal air inlet 212 connected to an internal air inlet channel 111, and an internal air outlet 213 connected to an internal air outlet channel 112. During use, this prevents condensate from the evaporator 31 from flowing out of the internal air outlet 213 in "blowing" mode; the condensate is designed to be guided to the guide channel 114 and discharged from the cooling side 300. Due to the presence of the guide water baffle 113, please refer to [further details omitted]. Figures 3-5 The internal air outlet duct 112 can be located on the side of the evaporator 31 away from the evaporator fan 32. Unlike the technical solution disclosed in Chinese patent application CN213291915U, it does not require extending the airflow channel after passing through the evaporator, forming a volute shape to surround the top of the cooling chamber, and then surrounding and connecting to the rear of the internal air inlet on the side of the evaporator facing the evaporator fan for air outlet. This solution can effectively control the volume of the roof-mounted integrated unit, with both height and length dimensions well controlled. Due to its compact structure, small size, and powerful cooling capacity, this multi-vehicle universal roof-mounted integrated air conditioner is suitable for installation in various vehicle types, including but not limited to tricycles, light trucks, heavy (large) trucks, and low-speed electric vehicle cabs.

[0080] During implementation, the relative order of the internal air inlet duct 111, evaporator 31, evaporator fan 32, and internal air outlet duct 112 should meet the requirements. The internal air inlet duct 111 and internal air outlet duct 112 can be located on a non-bottom surface of the outdoor unit casing 1, and connected to the internal air inlet 212 and internal air inlet duct 111 of the indoor unit 100 respectively via external pipes. Generally, the internal air inlet duct 111 and internal air outlet duct 112 are still located on the bottom surface of the outdoor unit casing 1 for easy connection to the indoor unit 100.

[0081] Please continue reading Figures 3-5 The internal air outlet channel 112 is located on the bottom wall of the outdoor unit housing 1. The edge of the internal air outlet channel 112 inside the cooling side 300 is higher than the position where the guide channel 114 communicates with the cooling side 300. The guide water baffle 113 protrudes from the inner surface of the bottom wall of the outdoor unit housing 1 and extends upward and synchronously toward the internal air outlet channel 112, so that the condensate water from the evaporator 31 carried by the air flowing through the evaporator 31 falls on the side of the guide water baffle 113 away from the internal air outlet channel 112.

[0082] In this way, the guide water baffle 11 extends upward at an angle to cover the space above the inner air outlet channel 112, improving the water blocking effect. The condensate falls on the side of the guide water baffle 113 away from the inner air outlet channel 112, flows to the lower part of the outdoor unit casing inside the cooling side 300, and is discharged from the guide channel 114, preventing the water from rising above the edge of the inner air outlet channel 112 inside the cooling side 300 and overflowing from the inner air outlet channel 112.

[0083] Please see Figure 9 and Figure 10 The internal air outlet channel 112 extends along the length of the evaporator 31, and the length of the guide water baffle 113 is greater than the length of the internal air outlet channel 112, and both ends extend beyond the internal air outlet channel 112.

[0084] In this way, the length of the internal air outlet duct 112 corresponds to the length of the evaporator 31, allowing air flowing through the evaporator 31 to easily exit through the internal air outlet duct 112, thus better ensuring airflow and cooling effect. The two ends of the water-blocking shield 113 extend beyond the internal air outlet duct 112, effectively blocking water. In implementation, the length of the evaporator corresponds to the width of the outer casing, which is also the left-right direction of the outer casing. When installed on the vehicle body, it also corresponds to the width, left-right, or lateral direction of the vehicle body. The front-back direction of the outer casing is also its length, which, when installed on the vehicle body, corresponds to the length, front-back, or longitudinal direction of the vehicle body.

[0085] The inner air outlet duct 112 has a water-retaining ring 115 formed by a protrusion along its edge towards the interior of the outdoor unit housing 1. The straight section of the water-retaining ring 115 near the evaporator 31 extends upwards to form the guide water-retaining cover 113. The other straight section, away from the evaporator 31, has a gradually sloping surface, which is depicted as an arc shape in this embodiment. This design facilitates airflow and reduces airflow resistance to a certain extent. The inner surface of the bottom wall of the outdoor unit housing 1 surrounding the water-retaining ring 115 forms a water collection point 116 on the cooling side 300, which is connected to the guide channel 114. The height of the water-retaining ring 115 is higher than the position where the guide channel 114 connects to the water collection point 116.

[0086] Please see Figure 4 , Figure 5 and Figure 10 The free end of the upward-extending guide water shield 113 completely covers the top of the inner air outlet duct 112.

[0087] This prevents condensate from falling into the inner air outlet channel 112 when it is blown away in a parabolic arc by the airflow on the higher surface of the evaporator 31; and better ensures the water-blocking effect of the guide water baffle 113.

[0088] The free end of the upward-extending water-retaining cover 113 has a gap with the inner wall of the opposite outer casing 1 to allow air circulation.

[0089] In this way, the airflow blown by the evaporator fan 32 toward the evaporator 31 undergoes heat exchange in the evaporator 31, flows over the top of the guide water baffle 113, bypasses the gap between the free end of the guide water baffle 113 and the inner wall of the opposite outdoor unit casing 1, and then flows out from the inner air outlet channel 112; effectively ensuring the smooth flow of the internal circulation air duct.

[0090] The cross-section of the guide water shield 113 is arc-shaped, with the convex side facing the evaporator 31.

[0091] In this way, the space in the internal circulation duct section between the upper part of the internal air outlet duct 112 and the guide water baffle 113 is more ample. When air bypasses the gap between the free end of the guide water baffle 113 and the inner wall of the opposite outdoor unit casing 1, and enters the internal circulation duct section between the upper part of the internal air outlet duct 112 and the guide water baffle 113, the guide water baffle 113 is concave in an inner arc shape, which also helps to guide the air to the lower internal air outlet duct 112.

[0092] The height of the upward extension of the guide water baffle 113 is not less than 1 / 2 of the height of the evaporator 31.

[0093] This ensures both the water-blocking effect and the airflow effect below the water-blocking cover 113.

[0094] The inner surface of the bottom wall of the outdoor unit casing 1, facing the evaporator 31, of the guide water baffle 113 gradually rises away from the guide water baffle 113, forming an inclined surface 117. The evaporator 31 is located above the inclined surface 117 to collect condensate and guide it to the water receiving position 116. It is understood that both ends of the water baffle ring 115 and the guide water baffle 113 are spaced from the inner wall of the refrigeration side 300, forming a channel for condensate to flow from the inclined surface 117 to the water receiving position 116. The evaporator 31 can be installed horizontally in the length direction and vertically in the width direction within the refrigeration side 300, but preferably, the evaporator 31 is inclined towards the guide water baffle 113. The airflow blown by the evaporator fan 32 towards the evaporator 31 can flow smoothly through the evaporator 31 and undergo heat exchange, ensuring effective airflow.

[0095] Specifically, the evaporator 31 is tilted at an angle of 5-15° relative to the vertical, perpendicular to the inclined surface 117. Although the fixed position of the evaporator 31 is higher than the base of the guide water baffle 113, the highest point of the guide water baffle 113 is usually not lower than the vertical middle position of the evaporator 31. This effectively ensures the water-blocking effect.

[0096] Please continue reading Figure 7 and Figure 10 In this embodiment, the outdoor unit housing 1 includes an air conditioner base plate 11 and an air conditioner cover 12 that is fastened to the air conditioner base plate 11. After the air conditioner cover 12 is fastened to the air conditioner base plate 11, it is secured by screws spaced around its perimeter. The heat dissipation component 2 and the compressor 5 are both mounted on the air conditioner base plate 11.

[0097] The evaporator 31 and the evaporator fan 32 are also mounted on the air conditioner base plate 11.

[0098] Both the internal air intake duct 111 and the internal air outlet duct 112 are located on the air conditioning base plate 11.

[0099] The internal air inlet duct 111 is located below the evaporator fan 32.

[0100] The airflow channel 114 is located on the air conditioner base plate 11.

[0101] Please continue reading Figure 5 and Figure 7 The air conditioner base plate 11 is connected to an evaporator cover 61, which forms the partition structure 6. The evaporator cover 61 is fastened to the air conditioner base plate 11 by spaced screws. The compressor 5 is located outside the evaporator cover 61, and the internal space of the evaporator cover 61 is the cooling side 300. (See also...) Figure 8 and Figure 21 The evaporator casing 61 has a notch on one side for connecting the inlet and outlet of the evaporator 31 to a 90-degree outlet H-shaped expansion valve 311. The inlet and outlet refrigerant pipes 4 are connected through the 90-degree outlet H-shaped expansion valve 311, which can save lateral space and avoid the need for a larger lateral space dimension after the refrigerant pipes 4 are directly connected and then bent backward.

[0102] Please continue reading Figure 7 and Figure 12 The heat dissipation component 2 includes a condenser 21 and a condenser cooling fan 22. The condenser cooling fan 22 is mounted on a fan housing 23 and is fixedly connected to the air conditioner base plate 11 through the fan housing 23. The condenser 21 is fixedly connected to the fan housing 23. The indoor unit 200 includes an indoor unit housing 211, an air outlet guide foam tube 7, an inner air inlet 212, an inner air outlet 213, and a control panel 214.

[0103] Evaporator 31 adopts a double-layer parallel flow core; its length is 440mm, its height is 115mm, and its thickness is 32mm; its volume is three-fifths that of the current expansion tube core. To ensure versatility, the external volume of evaporator 31 remains unchanged. When the installation target's cab space is small and the cooling capacity requirement is low, evaporator 31 uses 12 flat tubes with larger spacing for a cooling capacity of 1800W in a small space; when the installation target's cab space is large and the cooling capacity requirement is high, evaporator 31 uses 15 flat tubes with smaller spacing for a cooling capacity of 2600W in a large space.

[0104] Evaporator fan 32 uses a twin-shaft centrifugal fan, see [link / reference]. Figure 9 and Figure 10 The lower half of the evaporator fan 32, which is integrated on the air conditioner base plate 11, is the lower half of the mounting bracket for the double lower volute and the motor. All of these components are integrally injection molded onto the air conditioner base plate 11. (See also...) Figure 13 and Figure 14The two upper volutes and the fixed cover corresponding to the upper half of the motor mounting base are integrally formed on the evaporator outer cover 61. The evaporator 31 also has two lower fixing points at both ends of the inclined surface 117 of the air conditioner base plate 11. The evaporator outer cover 61 integrates a fixing slot for the upper end of the evaporator 31. The evaporator 31 and evaporator fan 32 are first placed on the air conditioner base plate 11. When the evaporator outer cover 61 is fixed to the air conditioner base plate 11 by several screws spaced around its perimeter, the evaporator 31 and evaporator fan 32 are fastened and fixed within the cooling side 300. An internal circulation channel is formed inside the evaporator outer cover 61, providing good sealing. The gap between the lower and upper volutes forms an air intake space. (See [reference needed]). Figure 9 The arrows indicate that this promotes wind pressure balance on both sides and reduces noise.

[0105] For implementation, please refer to Figure 5 , Figure 21 and Figure 22 The internal air outlet duct 112 is located at the front, the internal air inlet duct 111 is located behind the internal air outlet duct 112, the compressor 5 is located behind the evaporator cover 61, the condenser 21 is located behind the compressor 5, and the condenser cooling fan 22 is located at the rear, arranged in a front-to-back configuration. The compressor 5 is much heavier than other components, so mounting the compressor 5 in the middle of the air conditioner base plate 11 ensures the overall balance of the integrated unit and provides strong vibration resistance. Specifically, the air conditioner base plate 11 has an internal air inlet duct 111 and an internal air outlet duct 112 running through it. The base plate 11 also has an evaporator mounting position 101, an evaporator fan mounting position 102, a compressor mounting position 103, and a heat dissipation component mounting position 104. The compressor mounting position 103 and the heat dissipation component mounting position 104 are the bosses and through holes on the air conditioner base plate 11, respectively, for placing the corresponding components and connecting them using bolting. In the front-to-back direction of the air conditioner base plate 11, the inner air outlet duct, evaporator mounting position, evaporator fan mounting position, compressor mounting position, and heat dissipation component mounting position are arranged sequentially from front to back, and the front-to-back position of the inner air inlet duct corresponds to the evaporator fan mounting position; on the air conditioner base plate 11, the guide water baffle is arranged between the inner air outlet duct and the evaporator mounting position; the air conditioner base plate 11 is also provided with a ring of evaporator outer cover fastening groove, and the inner air inlet duct, guide water baffle, inner air outlet duct, evaporator mounting position, and evaporator fan mounting position are all located in the evaporator outer cover fastening groove.

[0106] Understandably, to facilitate the operation of the heat dissipation component 2, the air conditioner casing 12 has symmetrically arranged external air inlets 121 on both side walls, and two external air outlets 122 corresponding to the two condenser cooling fans 22 are arranged on the rear wall of the outdoor unit casing 1, as can be seen in the following figures. Figure 3 and Figure 6During operation, the two condenser cooling fans 22 rotate, drawing air in through the external air inlets 121 on both sides of the air conditioner cover 12. The air is drawn into the high-temperature, high-pressure condenser by the fan blades driven by the motors of the two condenser cooling fans 22, resulting in excellent heat dissipation and thus meeting the heat exchange requirements of different vehicle sizes.

[0107] Compressor 5 is an electric compressor, which can be a spiral or rotary compressor. If the capacity and power output of the vehicle's battery are insufficient to support the power consumption of compressor 5, an external mechanical compressor can be used. Simply draw a branch refrigerant pipe from the low-pressure pipe of evaporator 31 and the intake pipe of condenser 21, and connect it to the mechanical compressor to form a dual-purpose structure. This is particularly suitable for installation in vehicles with limited space.

[0108] The condenser 21 is installed horizontally along its length and vertically along its width within the heat dissipation side 400. The condenser 21 is fixed to the fan housing 23 via two lugs 24 at each end. The fan housing 23 is further fixed to the support mounting points 119 designed on the air conditioner base plate 11 via two connection points at each end. Figure 10 and Figure 16 To reduce size, the condenser cooling fan 22 adopts a small-diameter, ultra-thin motor design. The condenser 21 adopts a double-layer design, reducing the space size by half. Combined with the dual-blade condenser cooling fan 22, it intelligently controls the speed and airflow for cooling, adapting to the heat exchange requirements of various cab sizes and spaces. Specifically, the condenser 21 uses a double-layer flat tube, with the smallest D-shaped manifold welded integrally with the liquid filter device, unlike the so-called "double-layer condenser" achieved by connecting two identical models in series. The condenser is 540mm long and 200mm high; the height limitation is reasonable, effectively controlling the overall height of the multi-vehicle integrated roof-mounted electromechanical air conditioning outdoor unit 100, ensuring good applicability. In general, the length and width of the outdoor unit casing do not exceed three times its height.

[0109] See also Figure 10 and Figure 11The flow channels 114 are symmetrically arranged on the air conditioner base plate 11. The air conditioner base plate 11 has a middle sink water level 118. The condensate drains to the middle sink water level 118. Both are configured (or slotted) by the protruding partitions on the inner wall of the air conditioner base plate 11, forming the flow channels 114 and the middle sink water level 118. The evaporator cover fastening groove on the air conditioner base plate 11 is also formed (or slotted) by the protruding partitions on the air conditioner base plate 11. The relatively low position inside the inner partition of the evaporator cover fastening groove is the water receiving position 116. The partitions forming the evaporator cover fastening groove and the corresponding positions that fasten with the edge of the evaporator cover 61 have corresponding notches. The partitions forming the flow channels 114 are connected to the notches, thereby connecting the flow channels 114 and the water receiving position 116. The intermediate water level 118 is located vertically at the installation position of the compressor 5, below the compressor 5 and in front of the condenser 21. This allows it to be used for cooling in high-temperature environments. Under the suction of the dual fans of the condenser cooling fan 22, the hot air passes over the cold air above the intermediate water level 118, which helps to cool the condenser 21. The accumulated condensate can also cool the compressor, reducing the heat load of the compressor 5 and achieving energy-saving effects.

[0110] Here's a further explanation of the condensate flow. Inside the evaporator casing 61, a guide and baffle 113 is installed for the air-blowing refrigeration cycle. During operation: 1. Some of the condensate from the evaporator 31 itself drips naturally onto the inclined surface 117 due to gravity, flows from the gaps between the guide and baffle 113 and the evaporator casing 61 to the water receiving position 116, and then is discharged through the guide channel 114; 2. Condensate carried away by the air flowing through the evaporator 31 falls onto the side of the guide and baffle 113 facing the evaporator 31, flows naturally down the curved surface, flows from the gaps between the guide and baffle 113 and the evaporator casing 61 to the water receiving position 116, and then is discharged through the guide channel 114; 3. Condensate formed on the inner wall of the evaporator casing 61 due to temperature difference also flows naturally down to the water receiving position 116 and then is discharged through the guide channel 114. The flow channel 114 extends rearward. After the condensate is discharged from the cooling side through the flow channel 114, it flows along the flow channel 114 and passes through the intermediate sink level 118. The condensate at the intermediate sink level 118 may be completely used for cooling and thus exhausted, without needing further drainage. The flow channel 114 continues to extend symmetrically to the left and right behind the intermediate sink level 118, and a low-level drain hole 1141 is provided through it at the rear end of the air conditioner base plate 11. The height of the opening of the low-level drain hole 1141 is flush with the bottom wall height of the flow channel 114 and the intermediate sink level 118, so that the condensate can be further drained if it is not exhausted after being used for cooling at the intermediate sink level 118. In addition, a high-level drain hole 1142 is provided at the front of the air conditioning base plate 11, penetrating through the air guide channel 114. The opening of the high-level drain hole 1142 is higher than the bottom wall of the air guide channel 114 and lower than the height of the partition forming the air guide channel 114. When the condensate water level in the air guide channel 114 is too high (including when the vehicle is tilted forward), it participates in drainage, playing a function similar to an "overflow hole", ensuring that the condensate water can always be effectively discharged.

[0111] During installation, corresponding mounting through holes are made on the cab roof panel. The dimensions of these mounting through holes in both the horizontal and vertical directions are smaller than those of the indoor unit 200. The bottom surface of the air conditioning base plate 11 of the outdoor unit 100 is attached to the upper surface of the cab roof panel. A necessary annular sealing gasket is provided between the mounting through hole and the bottom surface of the air conditioning base plate 11 on the upper surface of the cab roof panel to prevent water leakage. The internal air intake duct 111 and internal air outlet duct 112 on the air conditioning base plate 11 are both located at the positions corresponding to the mounting through holes and are connected to them.

[0112] The indoor unit housing 211 of the indoor unit 200 is located in the cab and is fastened to the lower surface of the cab roof panel, covering the mounting through hole. The upper surface of the indoor unit housing 211 is in contact with the lower surface of the cab roof panel. A screw (not shown in the figure) is connected to and extends from the air conditioning base plate 11. (See attached image.) Figure 15The indoor unit 200 and outdoor unit 100 are tightened and connected to the cab roof by connecting nuts from below through multiple bolt points 216 designed on the indoor unit housing 211. The indoor air inlet 212 on the indoor unit housing 211 is located below and connected to the indoor air inlet channel 111, and the indoor air outlet 213 on the indoor unit housing 211 is located below and connected to the indoor air outlet channel 112. To effectively separate the inlet and outlet air of the internal circulation channel, a partition plate 215 is provided on the inner side of the indoor unit housing 211 between the indoor air inlet 212 and the indoor air outlet 213. Figure 15 Since the mounting hole also has a certain length (i.e., the thickness of the cab roof panel), in order to prevent crossflow of air intake and exhaust within the mounting hole, the internal air outlet duct 112 of the air conditioning base plate 11 and the internal air outlet 213 of the indoor unit housing 211 are connected and communicated through the air outlet guide foam tube 7, effectively separating the intake and exhaust air. The air outlet guide foam tube 7 can be fitted onto the outside of the corresponding end duct at both ends, or it can be embedded in the inside of the corresponding end duct. Depending on the actual installation needs, the air outlet guide foam tube 7 is made of lightweight materials such as foam board, and can be one piece or spliced ​​on four sides. Of course, to simplify the structure, the air outlet guide foam tube 7 can also be left on only one side, that is, the side extending from the top of the partition plate 215, which can serve to separate the internal circulation intake and exhaust air.

[0113] Can be viewed simultaneously Figures 17-20 A comparison of the external dimensions with existing patent application CN112078329A:

[0114]

[0115] As shown in the comparison examples above, these are representative of existing parking air conditioning units, specifically rooftop units. Parking air conditioners are characterized by their large size and heavy weight, and are only recommended for use with a dedicated battery when parked, hence the name "parking air conditioner." During normal driving, the vehicle's original air conditioning system is used. If the vehicle is parked and the original air conditioning system is used, the engine needs to be kept running to maintain the battery's charge, resulting in high fuel consumption and poor economy. If the existing parking air conditioner is used while driving, the approximately 40 kg unit on the roof experiences excessive vibration from its own operation, combined with the vehicle's movement, which can easily damage internal components. Currently, the internal components of parking air conditioners are generally repurposed from household air conditioners and are not suitable for the vibrations of driving. Therefore, existing parking air conditioners are also called parking air conditioners.

[0116] Furthermore, current parking air conditioners, designed to meet the cooling capacity requirements of heavy trucks, are large and heavy, making them unsuitable for use with smaller trucks, electric tricycles, and electric vehicles. Customers have a strong desire for a compact, lightweight, and universally compatible integrated unit that can meet the cooling needs of vehicles of all sizes, usable both while driving and parked. This application's multi-model universal roof-mounted integrated air conditioner meets these requirements: it is compact, lightweight, and can meet the cooling needs of vehicles of all sizes, usable both while driving and parked. It employs intelligent variable frequency control technology, is low-cost, and easy to install—even a single person can install it on the roof.

[0117] If a heating element is required during use, the evaporator fins can be removed, and a PTC heating element can be installed and fixed in the gaps. This way, the evaporator space is not occupied, and the cooling and heating functions can be switched. Alternatively, the PTC can be installed separately in the air outlet duct. This is particularly suitable for small cabs. Larger vehicles have higher heating power, making the PTC method unsuitable; readily available parking heaters are available in these cases.

[0118] As an feasible alternative, please see Figure 23 and Figure 24 The two upper volutes and the fixed cover corresponding to the upper half of the motor mounting base are injection molded separately and are no longer integrally molded on the evaporator cover 61. During assembly, after installing the evaporator fan 32, it is first fastened to the air conditioner base plate 11, and then fastened to the evaporator cover 61 to form a partition structure. In this form, the evaporator cover 61 has a regular and flat shape, which makes it convenient to attach heat insulation material to the outer surface of the evaporator cover 61.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model 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 this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A roof integrated air conditioner for multiple vehicle types, characterized by: Includes outdoor units and indoor units; The outdoor unit includes an outdoor unit housing, which comprises an air conditioner base plate and an air conditioner cover. The outdoor unit housing contains refrigeration components, including an evaporator and an evaporator fan; heat dissipation components, including a condenser, a condenser cooling fan, and a fan cover; air conditioning pipes and a compressor; and a partition structure separating the heat dissipation components and the refrigeration components, such that the space containing the refrigeration components within the outdoor unit housing is a refrigeration side, and the space containing the heat dissipation components within the outdoor unit housing is a heat dissipation side. In the front-rear direction of the outdoor unit housing, the evaporator, evaporator fan, compressor, condenser, condenser cooling fan, and fan cover are arranged sequentially. The length and width of the outer casing shall not exceed three times its height. An internal air inlet channel and an internal air outlet channel are spaced apart on the outdoor unit casing on the cooling side. The internal air inlet channel, the internal air outlet channel, and the internal space of the outdoor unit casing on the cooling side form an internal circulation air duct. In the internal circulation air duct, the evaporator fan and the evaporator are arranged in sequence according to the airflow direction from the internal air inlet channel to the internal air outlet channel. The evaporator fan draws in air from the internal air inlet channel and blows it out toward the evaporator. After the air flows through the evaporator, it flows out from the internal air outlet channel to form a cooling cycle in the form of blowing. An air guide and water baffle is installed inside the outdoor unit casing. The air guide and water baffle is located between the inner air outlet channel and the evaporator. Firstly, it prevents the air flowing through the evaporator from carrying the condensate on the evaporator into the inner air outlet channel; secondly, it divides the condensate of the evaporator into two paths. The outdoor unit casing has a guide channel for draining condensate from the cooling side. The guide channel is symmetrically located on the air conditioner base plate, and the condensate is drained to the outside of the cooling side and to the middle submerged water level on the air conditioner base plate, which is located below the compressor. The guide channel continues to extend symmetrically to the left and right behind the middle submerged water level, and a low-level drain hole is provided at the rear end of the air conditioner base plate. The opening height of the low-level drain hole is flush with the bottom wall height of the guide channel and the middle submerged water level. At the front of the guide channel, a high-level drain hole is also provided through the air conditioner base plate, and the opening height of the high-level drain hole is higher than the bottom wall of the guide channel.

2. A roof integrated air conditioner for multiple vehicle types, characterized by: Includes outdoor units and indoor units; The outdoor unit includes an outdoor unit housing, inside which are provided a heat dissipation component, a refrigeration component, and a compressor connected to the heat dissipation component and the refrigeration component via refrigerant pipes. The outdoor unit housing is provided with a partition structure that separates the heat dissipation component and the refrigeration component, so that the space where the refrigeration component is located inside the outdoor unit housing is formed as the refrigeration side, and the space where the heat dissipation component is located inside the outdoor unit housing is formed as the heat dissipation side. An internal air inlet channel and an internal air outlet channel are provided on the outdoor unit casing on the cooling side. The internal air inlet channel, the internal air outlet channel and the internal space of the outdoor unit casing on the cooling side form an internal circulation air duct. The refrigeration components include an evaporator and an evaporator fan. In the inner circulation duct, the evaporator fan and the evaporator are arranged in sequence according to the airflow direction from the inner air inlet channel to the inner air outlet channel. The evaporator fan draws in air from the inner air inlet channel and blows it out toward the evaporator. After the air flows through the evaporator, it flows out from the inner air outlet channel to form a blowing refrigeration cycle. The heat dissipation components include a condenser and a condenser cooling fan; in the front-rear direction of the outdoor unit casing, the evaporator, evaporator fan, compressor, condenser and condenser cooling fan are arranged in sequence; An air guide and water baffle is installed inside the outdoor unit housing. The air guide and water baffle is located between the inner air outlet channel and the evaporator to prevent the air flowing through the evaporator from carrying the condensate on the evaporator into the inner air outlet channel. The outdoor unit casing has a drainage channel for draining condensate from the cooling side.

3. The multi-model universal roof-mounted integrated electromechanical air conditioner according to claim 2, characterized in that: The evaporator adopts a double-layer parallel flow core, with its length direction corresponding to the width direction of the outdoor unit casing; The evaporator fan is a twin-shaft centrifugal fan, with its axial direction corresponding to the width direction of the outer casing; The compressor is an electric compressor, and its axial direction corresponds to the width direction of the outer casing. The condenser adopts a double-layer flat tube structure, with its length direction corresponding to the width direction of the outdoor unit casing and its width direction being vertical. The condenser and the condenser cooling fan are installed inside the outdoor unit casing through a fan cover. The condenser cooling fan consists of two fans arranged side by side at intervals along the length direction of the condenser, each driven by two small-diameter ultra-thin motors.

4. The roof-top integrated air conditioner of claim 2, wherein: The internal air outlet duct is located on the side of the evaporator away from the evaporator fan.

5. The roof-top integrated electric air conditioner of claim 4, wherein: The internal air outlet duct is located on the bottom wall of the outdoor unit casing, and the edge of the internal air outlet duct on the cooling side is higher than the position where the guide channel connects to the cooling side. The water-repellent baffle protrudes from the inner surface of the bottom wall of the outdoor unit housing and extends upward and synchronously toward the inner air outlet channel, so that the evaporator condensate carried by the air flowing through the evaporator falls on the side of the water-repellent baffle that is away from the inner air outlet channel.

6. The roof-top integrated electric air conditioner of claim 5, wherein: The internal air outlet channel extends along the length of the evaporator, and the length of the guide baffle is greater than the length of the internal air outlet channel, with both ends extending beyond the internal air outlet channel.

7. The roof-top integrated electric air conditioner of claim 6, wherein: The edge of the internal air outlet duct protrudes towards the interior of the outdoor unit housing to form a water-blocking ring. The straight section of the water-blocking ring near the evaporator continues to extend upward to form the guide water-blocking cover.

8. The roof-top integrated electric air conditioner of claim 5, wherein: The free end of the upward-extending water-retaining cover completely covers the top of the internal air outlet duct; There is a gap between the free end of the upward-extending water deflector and the inner wall of the opposite outdoor unit casing to allow air circulation; The cross-section of the guide shield is arc-shaped, with the convex side facing the evaporator.

9. The roof-top integrated electric air conditioner of claim 7, wherein: The inner surface of the bottom wall of the outdoor unit casing facing the evaporator of the guide water baffle gradually rises away from the guide water baffle, forming an inclined surface, and the evaporator is located above the inclined surface.

10. The roof-top integrated electric air conditioner of claim 9, wherein: The evaporator is tilted toward the side of the guide water baffle.

11. The roof-top integrated electric air conditioner of claim 5, wherein: The outdoor unit housing includes an air conditioner base plate and an air conditioner cover that is fastened to the air conditioner base plate. The heat dissipation components and the compressor are both mounted on the air conditioner base plate. The evaporator and evaporator fan are also mounted on the air conditioner base plate. Both the internal air intake and internal air exhaust ducts are located on the base plate of the air conditioner unit. The internal air intake duct is located below the evaporator fan. The airflow channel is located on the base plate of the air conditioner.

12. The roof-top integrated electric air conditioner of claim 11, wherein: An evaporator cover is connected to the base plate of the air conditioner, and the partition structure is formed by the evaporator cover. The compressor is located outside the evaporator cover.

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