Split back-mounted air conditioner of passenger car

Abstract

The split back-mounted air conditioner of the passenger car comprises a condenser, an air duct and a plurality of evaporators. The evaporator, the air return assembly and the air supply assembly are connected to the two sides of the core body assembly respectively, the structure is compact, and the air conditioner can be conveniently installed in an air duct of a passenger car. The evaporators and the condenser are arranged in a split mode, the multiple evaporators are installed in the air supply duct of the passenger car, and after the evaporators are arranged in the extending direction of the air supply duct, cold air sent out by each single evaporator is led into a passenger compartment of the passenger car from a nearby air outlet; therefore, the refrigeration effects of the air outlets with different distances from the tail of the vehicle are not greatly different. The air supply duct and the air return duct are separated from each other, so that air flow supplied by the air supply assembly in the air supply duct is not affected by air flow of return air, and stable air supply effect is guaranteed. Therefore, the air supply temperature and the air speed of each area in the vehicle are uniform, and the body feeling of passengers in the passenger compartment can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners for passenger cars, and particularly relates to a split back-mounted air conditioner for passenger cars. BACKGROUND

[0002] At present, most condensers of back-mounted air conditioners for passenger cars on the market are integrated with evaporators, and cold air is sent to an air duct in a passenger car through a transition air duct from the tail of the passenger car. This mode can cause uneven air supply. For example, the space where the head of the passenger car is located is farthest from the evaporator, and cold air needs to pass through the entire air duct of the passenger car to reach the space where the head of the passenger car is located, while cold air only needs to pass through a very short distance of the air duct of the passenger car to reach the space where the tail of the passenger car is located. The air supply temperature and air speed in each region of the passenger car are greatly different, and the passengers have a poor feeling. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the utility model is to solve the insufficient air supply effect of the back-mounted air conditioner for passenger cars in the prior art, and thus provide a split back-mounted air conditioner for passenger cars.

[0004] The utility model adopts the technical scheme that:

[0005] A split back-mounted air conditioner for passenger cars comprises:

[0006] A condenser is configured to be installed at the tail of a passenger car.

[0007] An air duct is configured to extend along at least part of the frame of the passenger car. The air duct comprises an air supply air duct and an air return air duct which are separated from each other. The wall surface of the air supply air duct has a plurality of air outlets for supplying air to the passenger cabin of the passenger car.

[0008] A plurality of evaporators are configured to be installed in the air supply air duct and arranged along the extension direction of the air supply air duct. The evaporators are fixed to the frame. The plurality of evaporators are connected to the condenser through refrigerant pipelines.

[0009] The evaporator comprises a core assembly, an air return assembly and an air supply assembly. The air return assembly and the air supply assembly are respectively connected to the two sides of the core assembly. The air return assembly has an air inlet which is in communication with the air return air duct. The air supply assembly has an air outlet which is in communication with the air supply air duct. The airflow discharged from the air outlet can be blown out from the air outlet through the air supply air duct.

[0010] In an optional embodiment, the evaporator comprises an evaporator main body and a top plate. The top plate is fixed to the top of the evaporator main body. The edge of the top plate has mounting holes for connecting fixing members. The evaporator is fixed to the frame through the fixing members connected to the mounting holes.

[0011] In an optional embodiment, the mounting hole is a slotted hole, and the fastener is a bolt or screw.

[0012] In an optional embodiment, the return air assembly includes a sealing ring disposed around the edge of the air inlet for abutting against the wall of the air supply duct.

[0013] In an optional embodiment, the return air assembly includes a filter cotton covering the air inlet.

[0014] In an optional embodiment, the core assembly is detachably connected to the return air assembly, and the core assembly is detachably connected to the supply air assembly.

[0015] In an optional embodiment, the air supply assembly includes:

[0016] A base plate, the extension direction of which forms an acute angle with the horizontal plane; the air outlet is formed in the base plate;

[0017] Several fans are mounted on the base plate, and the fan outlets of the fans are connected to the air supply outlets.

[0018] In an alternative embodiment, the outer casing of the fan abuts against the sidewall of the core assembly.

[0019] In an alternative embodiment, a plurality of the evaporators are arranged along the X and Y directions of the frame, wherein the X direction is perpendicular to the Y direction.

[0020] In an alternative embodiment, the frame is divided into several regions along the X direction, and the evaporators arranged between adjacent regions are offset in the Y direction.

[0021] The beneficial effects of this invention are as follows: The evaporator, return air assembly, and supply air assembly of this invention are respectively connected to both sides of the core assembly, resulting in a compact structure that facilitates installation in the air ducts of a bus. The evaporator and condenser are separately configured. By installing several evaporators within the supply air duct of the bus, and arranging them along the extension direction of the supply air duct, the cold air delivered by each individual evaporator enters the passenger compartment from a nearby air outlet. Therefore, the cooling effect of each air outlet does not vary significantly depending on its distance from the rear of the vehicle. The supply air duct and return air duct are separated, ensuring that the airflow delivered by the supply air assembly within the supply air duct is not affected by the return airflow, guaranteeing a stable air delivery effect. Therefore, this invention ensures uniform air temperature and airflow velocity in all areas of the vehicle, improving the comfort of passengers in the passenger compartment. Attached Figure Description

[0022] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram showing the connection relationship between the condenser and the evaporator in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram showing the distribution of the evaporator on the frame according to an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the evaporator structure according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram showing the position of the evaporator in the air duct according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the air duct structure according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the evaporator and frame fixing structure according to an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the air supply component structure according to an embodiment of this application.

[0030] The attached figures are labeled as follows:

[0031] 1. Condenser;

[0032] 2. Air duct; 21. Supply air duct; 211. Air outlet; 22. Return air duct; 23. Refrigerant piping;

[0033] 3. Frame; 31. Fasteners;

[0034] 4. Evaporator; 41. Core assembly; 42. Return air assembly; 43. Supply air assembly; 44. Top plate; 421. Air inlet; 422. Sealing ring; 423. Filter cotton; 430. Air outlet; 431. Base plate; 432. Fan; 441. Mounting hole. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0036] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] This embodiment provides a split-type rear-mounted air conditioner for buses, such as... Figures 1-5 As shown, the system includes a condenser 1, an air duct 2, and several evaporators 4. The condenser 1 is configured to be installed at the rear of the bus for condensing the refrigerant required for air conditioning operation. The air duct 2 is configured to extend along at least a portion of the bus frame 3, fully covering the entire passenger compartment. The air duct 2 includes mutually separated supply air ducts 21 and return air ducts 22, where "mutually separated" means that there is at least a physical partition between them, so that the airflow within them does not affect each other or has minimal mutual influence. The walls of the supply air duct 21 have several air outlets 211 for supplying air to the passenger compartment of the bus. Several evaporators 4 are configured to be installed within the supply air duct 21 and arranged along the extension direction of the supply air duct 21. The evaporators 4 are fixed to the frame 3, which provides stable support for each evaporator 4. The several evaporators 4 are connected to the condenser 1 via refrigerant pipes 23 to obtain refrigerant from the refrigerant pipes 23.

[0040] The evaporator 4 includes a core assembly 41, a return air assembly 42, and an air supply assembly 43. The core assembly 41 refers to the core, the refrigeration components such as the expansion valve included on the core, and the water collection tray below the core. The return air assembly 42 and the air supply assembly 43 are respectively connected to the two sides of the core assembly 41. The return air assembly 42 has an air inlet 421, which is connected to the return air duct 22. The air supply assembly 43 has an air outlet 430, which is connected to the air supply duct 21. The airflow discharged from the air outlet 430 can be blown out from the air outlet 211 through the air supply duct 21.

[0041] When the split rear-mounted air conditioner of the bus in this embodiment is in operation, several evaporators 4 obtain refrigerant from the refrigerant pipe 23. The airflow entering through the air inlet 421 is heated by the refrigerant, and then the air is delivered by the air supply assembly 43 through the air outlet 430, and finally blown out from the air outlet 211 through the air supply duct 21 into the passenger compartment.

[0042] The evaporator 4, return air assembly 42, and air supply assembly 43 of this invention are respectively connected to both sides of the core assembly 41, resulting in a compact structure that facilitates installation in the air duct 2 of a bus. The evaporator 4 and condenser 1 are separate units. By installing several evaporators 4 within the air supply duct 21 of the bus, and arranging them along the extension direction of the air supply duct 21, the cold air delivered by each individual evaporator 4 enters the passenger compartment from a nearby air outlet 211. Therefore, the cooling effect of each air outlet 211 will not differ significantly depending on its distance from the rear of the vehicle. The air supply duct 21 and return air duct 22 are separated from each other, ensuring that the airflow delivered by the air supply assembly 43 within the air supply duct 21 is not affected by the return airflow, thus guaranteeing a stable air supply effect. Therefore, this invention ensures uniform air temperature and airflow velocity in all areas of the vehicle, improving the comfort of passengers in the passenger compartment.

[0043] In an alternative embodiment, such as Figure 3 , Figure 6 As shown, the evaporator 4 includes an evaporator body and a top plate 44. The top plate 44 is fixed to the top of the evaporator body, and the edge of the top plate 44 has mounting holes 441 for connection with fasteners 31. The evaporator 4 is fixed to the frame 3 through the mounting holes 441 connected to the fasteners 31. In this embodiment, the evaporator 4 is easily fixed to the bus frame 3 by the mounting holes 441 on the top plate 44, which solves the problem of difficult installation after the installation position of the evaporator 4 is changed (traditionally, the evaporator is installed at the rear of the vehicle). As a structural component of the bus itself, the frame 3 can provide stable support for the evaporator 4.

[0044] In an alternative embodiment, such as Figure 3As shown, the mounting hole 441 is an oblong hole, and the fastener 31 is a bolt or screw. In this embodiment, the oblong hole 441 improves its dimensional adaptability. However, when there are dimensional differences at different positions of the frame 3, the oblong hole can provide a wider range of adjustment space to ensure that the top plate 44 can be smoothly fixed to the frame 3.

[0045] In an alternative embodiment, such as Figure 3 , Figure 5 As shown, the return air assembly 42 includes a sealing ring 422, which surrounds the edge of the air inlet 421 and abuts against the wall of the air supply duct 21. In this embodiment, the sealing ring 422 prevents airflow in the air supply duct 21 from entering the return air assembly 42 through the edge gap of the air inlet 421, thereby preventing a reduction in the actual amount of cold air blown out of the air outlet 211.

[0046] In an optional embodiment, the sealing ring 422 is a sealing cotton with good sealing performance and deformability.

[0047] In an alternative embodiment, such as Figure 3 As shown, the return air assembly 42 includes a filter cotton 423, which covers the air inlet 421. The filter cotton 423 can filter particulate matter in the return airflow, improve air quality, and help ensure the cleanliness of the airflow delivered by the air conditioner. The filter cotton 423 is located at the air inlet 421 for easy replacement. The old filter cotton 423 can be removed and replaced with a new one simply by opening part of the interior panel of the bus (part of the exterior of the air duct 2).

[0048] In an optional embodiment, the filter cotton 423 is embedded in the side wall of the return air assembly 42, which can reduce the space occupied and compress the overall volume of the evaporator 4.

[0049] In an optional embodiment, the core assembly 41 is detachably connected to the return air assembly 42, and the core assembly 41 is detachably connected to the supply air assembly 43. In this embodiment, the evaporator 4 adopts a modular design, which allows for easy modification of one or two of the components of the core assembly 41, return air assembly 42, and supply air assembly 43 to meet various needs, so as to adapt to air ducts 2 of various widths and heights.

[0050] In an alternative embodiment, such as Figure 7As shown, the air supply assembly 43 includes a base plate 431 and a plurality of fans 432. The extension direction of the base plate 431 forms an acute angle with the horizontal plane; an air outlet 430 is formed on the base plate 431. The plurality of fans 432 are mounted on the base plate 431, and the fan outlets of the fans 432 are connected to the air outlets 430. In this embodiment, the base plate 431 and the plurality of fans 432 are inclined relative to the horizontal plane, which can reduce the vertical space occupied by the evaporator 4, allowing it to be installed normally in the low-height air duct 2, thus improving installation compatibility.

[0051] In an optional embodiment, the housing of the fan 432 abuts against the side wall of the core assembly 41, which can reduce the width occupied by the air supply assembly 43 in the horizontal direction, thereby reducing the width of the evaporator 4 and improving installation compatibility.

[0052] In an alternative embodiment, such as Figure 2 As shown, several evaporators 4 are arranged along the X and Y directions of the frame 3, with the X direction perpendicular to the Y direction. In this embodiment, the arrangement of the evaporators 4 in two mutually perpendicular directions enables more uniform airflow throughout the passenger compartment of the bus.

[0053] In an alternative embodiment, such as Figure 2 As shown, the frame 3 is divided into several regions along the X direction, and the evaporators 4 arranged between adjacent regions are staggered in the Y direction. In this embodiment, the staggered distribution of the evaporators 4 can achieve more uniform air supply conditions with fewer evaporators, avoiding the situation where the number of evaporators 4 in a local area of ​​the passenger cabin is significantly more or less than that in other areas.

[0054] In an alternative embodiment, such as Figure 5 As shown, the top space of the passenger compartment of the bus is used as the return air duct 22. Air supply ducts 21 are arranged on both sides of the top space of the passenger compartment along the width direction of the bus. The air supply ducts 21 have a shell, which separates the air supply ducts 21 from the return air ducts 22. The air supply outlet 430 is located inside the shell, and the air inlet 421 is located on one side (left or right) of the shell along the horizontal direction, preventing cold air blown from the air supply outlet 430 from flowing directly to the air inlet 421.

[0055] In an optional embodiment, the air duct 2 is mainly distributed on both sides of the bus, extending from the rear of the passenger area to the front or to the driver area.

[0056] In an alternative embodiment, the refrigerant line 23 is primarily made of a flexible, flexible hose, which facilitates the flexible arrangement of the evaporator 4.

[0057] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A split back mounted air conditioner for a passenger vehicle, characterized in that, The application relates to a refrigeration system for a passenger car, which comprises: a condenser (1) arranged at the tail of the passenger car; an air duct (2) arranged along at least part of the frame (3) of the passenger car, wherein the air duct (2) comprises a supply air duct (21) and a return air duct (22) separated from each other, and the wall of the supply air duct (21) is provided with a plurality of air outlets (211) for supplying air to the passenger cabin of the passenger car; a plurality of evaporators (4) arranged in the supply air duct (21) and arranged along the extension direction of the supply air duct (21), wherein the evaporators (4) are fixed to the frame (3) and connected to the condenser (1) through refrigerant pipes (23); the evaporator (4) comprises a core assembly (41), a return air assembly (42) and a supply air assembly (43), wherein the return air assembly (42) and the supply air assembly (43) are respectively connected to the two sides of the core assembly (41), the return air assembly (42) is provided with an air inlet (421) communicated with the return air duct (22), and the supply air assembly (43) is provided with an air outlet (430) communicated with the supply air duct (21), and the airflow discharged from the air outlet (430) can be blown out from the air outlet (211) through the supply air duct (21).

2. The split back mounted air conditioner for a passenger vehicle according to claim 1, characterized by the evaporator (4) comprises an evaporator main body and a top plate (44) fixed to the top of the evaporator main body, the edge of the top plate (44) is provided with a mounting hole (441) connected with a fixing member (31), and the evaporator (4) is fixed to the frame (3) through the fixing member (31) connected with the mounting hole (441).

3. The split back mounted air conditioner for a passenger vehicle according to claim 2, characterized by the mounting hole (441) is a waist-shaped hole, and the fixing member (31) is a bolt or a screw.

4. The split back mounted air conditioner for a passenger vehicle according to any one of claims 1 to 3, characterized in that, the return air assembly (42) comprises a sealing ring (422) arranged around the edge of the air inlet (421) and used for abutting against the wall of the supply air duct (21).

5. The split back mounted air conditioner for a passenger vehicle according to any one of claims 1 to 3, characterized in that, the return air assembly (42) comprises filter cotton (423) covering the air inlet (421).

6. The split back mounted air conditioner for a passenger vehicle according to any one of claims 1 to 3, characterized by the core assembly (41) and the return air assembly (42) are detachably connected, and the core assembly (41) and the supply air assembly (43) are detachably connected.

7. The split back mounted air conditioner for a passenger vehicle according to any one of claims 1 to 3, characterized by the supply air assembly (43) comprises: a bottom plate (431) arranged at an acute angle with the horizontal plane, and the air outlet (430) is formed in the bottom plate (431); a plurality of fans (432) arranged on the bottom plate (431), and the fan blowing port of the fan (432) is communicated with the air outlet (430).

8. The split back mounted air conditioner for a passenger vehicle as set forth in claim 7, characterized by the shell of the fan (432) abuts against the side wall of the core assembly (41).

9. The split back mounted air conditioner for a passenger vehicle according to any one of claims 1 to 3, characterized in that, the plurality of evaporators (4) are arranged along the X direction and the Y direction of the frame (3), and the X direction is perpendicular to the Y direction.

10. The split back mounted air conditioner for a passenger vehicle of claim 9 wherein, The frame (3) is divided into several regions along the X direction, and the evaporators (4) arranged between adjacent regions are staggered in the Y direction.

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