An air conditioner evaporator assembly and a mini excavator

Abstract

This utility model discloses an air conditioning evaporator assembly and a mini excavator in the field of air conditioning equipment technology. The air conditioning evaporator assembly is installed in the right-side space of the mini excavator. The air conditioning evaporator assembly includes a housing and an evaporator core. The housing includes a receiving compartment, and the lower part of the receiving compartment has a bottom compartment for accommodating the evaporator core. The evaporator core is inclinedly fixed inside the bottom compartment. By adjusting the inclination of the evaporator core in the bottom compartment, the height of the air conditioning evaporator assembly in the Z direction and / or the width in the X direction are reduced. By setting a first chamfer and a second chamfer on the housing, the thickness in the X and Y directions can be further reduced, allowing the air conditioning assembly to be better integrated into the right-side space of the cab, making full use of the installation space, upgrading the internal components of the air conditioning evaporator assembly, and improving the temperature control performance of the air conditioning evaporator assembly; it also does not obstruct the driver's right foot when operating the machine.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, specifically to an air conditioning evaporator assembly and a mini excavator. Background Technology

[0002] In the machinery industry, excavators with a gross vehicle weight of less than 3 tons are referred to as "mini excavators." Conventional excavators have ample cab space, typically allowing for the placement of the air conditioning evaporator assembly under the seat. However, due to the limited interior space of existing mini excavator cabs, the air conditioning evaporator assembly is primarily located on the right side of the cab. The size of the evaporator assembly is closely related to its temperature control performance. A larger evaporator assembly allows for the installation of larger temperature control components (such as heat sinks, heating elements, and fans), thus improving the overall temperature control performance of the cooling system.

[0003] The existing evaporator assembly cannot make full use of the space on the right side of the mini excavator cab. This not only restricts the installation space of the evaporator assembly and affects its temperature regulation performance, but also encroaches on the right foot space of the mini excavator operator, affecting the operator's comfort when operating the mini excavator. Utility Model Content

[0004] The purpose of this utility model is to disclose an air conditioning evaporator assembly that makes full use of the space on the right side of the mini excavator cab, maximizes the temperature control performance of the air conditioning evaporator, and does not obstruct the driver's right foot operation.

[0005] To achieve the above objectives, this utility model discloses an air conditioner evaporator assembly, which includes:

[0006] The box body includes a storage compartment, and the lower part of the storage compartment is provided with a bottom compartment;

[0007] An evaporator core is inclinedly fixed inside the bottom compartment to reduce the height of the bottom compartment in the Z direction and / or to reduce the width of the bottom compartment in the X direction.

[0008] As an optional implementation, the evaporator core is provided with fixing brackets on both sides; the bottom compartment is provided with a first fixing hole group and a second fixing hole group on both sides corresponding to the fixing brackets, the first fixing hole group and the second fixing hole group each include no less than 2 fixing holes, and the plurality of fixing holes on the first fixing hole group and the plurality of fixing holes on the second fixing hole group are arranged along the same linear direction; the fixing bracket is provided with fastening bolts that cooperate with the fixing holes on the length direction corresponding to the fixing holes.

[0009] As an optional implementation, the fixing holes are arranged along the Z-axis direction, and the arrangement direction of the plurality of fixing holes in the first fixing hole group is parallel to the arrangement direction of the plurality of fixing holes in the second fixing hole group; the first fixing hole group and the second fixing hole group are offset from each other by the same distance in opposite directions in the Y direction, so that the projection of the evaporator core on the XY plane forms an acute angle α with the X direction.

[0010] As an optional implementation, the plurality of fixing holes on the first fixing hole group and the plurality of fixing holes on the second fixing hole group are arranged along a linear direction with an acute angle β relative to the Z-axis, so that the projection of the evaporator core on the YZ plane forms an acute angle β with the Y direction.

[0011] As an optional implementation, the evaporator core is provided with a pipe assembly, and the side of the bottom compartment is provided with a guide groove that matches the pipe assembly. The guide groove is perpendicular to the direction in which the fixing holes are arranged.

[0012] As an optional implementation, the top of the containing compartment is provided with a top compartment, which is connected to the bottom compartment; the top compartment is provided with a blower assembly, and the top of the top compartment is provided with multiple exhaust vents, which are connected to an external air duct.

[0013] As an optional implementation, the top compartment has a first chamfer on one of its outer side walls in the X direction, the first chamfer being recessed into the interior of the housing and extending to the bottom surface of the bottom compartment.

[0014] As an optional implementation, the opening of the accommodating compartment is provided with a side cover for covering the opening, the side cover is provided with a second chamfer corresponding to the bottom compartment, the second chamfer is recessed into the interior of the box and extends to the bottom surface of the bottom compartment; the side cover is provided with an air inlet corresponding to the bottom compartment, and the air inlet is provided with a removable filter screen.

[0015] As an optional implementation, the box body is provided with a water heating pipe between the top compartment and the bottom compartment, and the inside of the box body is provided with a fixing groove for fixing the water heating pipe.

[0016] In another aspect, this utility model discloses a mini excavator, including a cab. The aforementioned air conditioning evaporator assembly is located in the right-side space of the cab.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) By tilting the evaporator core in the bottom compartment, the height of the entire bottom compartment in the Z direction can be reduced, and / or the thickness of the bottom compartment in the X direction can be reduced, thereby reducing the volume of the evaporator assembly and making it easier to assemble the evaporator assembly into the right side of the cab, thus improving the utilization rate of the right side space of the cab.

[0019] (2) Reducing the height of the bottom compartment in the Z direction can free up enough space in the cabinet to install the temperature control components of the air conditioner evaporator assembly, thereby improving the temperature control performance of the evaporator assembly.

[0020] (3) Reducing the thickness of the chassis in the X direction can effectively increase the driver's foot movement space, without hindering the driver's right foot operation, thus improving the driver's comfort. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of the box body disclosed in an embodiment of this utility model;

[0023] Figure 2 This is an exploded view of the internal components of the housing disclosed in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the evaporator core projected onto the XY plane according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the evaporator core projected onto the YZ plane according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the evaporator core structure disclosed in this embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the box disclosed in this embodiment of the utility model;

[0028] Figure 7 This is an exploded view of the side cover disclosed in an embodiment of this utility model;

[0029] Explanation of key figure labels:

[0030] 1. Housing; 11. Storage compartment; 111. Fixing groove; 112. Guide groove; 113. First fixing hole group; 114. Second fixing hole group; 12. Side cover; 121. Air inlet; 122. Filter screen; 13. Top compartment; 131. First chamfer; 132. Exhaust outlet; 14. Bottom compartment; 141. Second chamfer; 2. Evaporator core; 21. Piping assembly; 211. Circulation pipe; 22. Heat sink; 23. Fixing bracket; 231. Fastening bolts; 3. Water heating pipes; 4. Blower assembly. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0035] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0036] This utility model discloses a mini excavator, which includes a cab. An air conditioning evaporator assembly is housed in the right-side space of the cab. The air conditioning evaporator assembly of this utility model will be further described below with reference to embodiments and accompanying drawings.

[0037] Please see Figure 1 This application provides an air conditioner evaporator assembly. The air conditioner evaporator assembly includes a housing 1, which includes a receiving compartment 11 and a side cover 12. The receiving compartment 11 has an open opening, and its interior is used to house the various components of the air conditioner evaporator assembly. The receiving compartment 11 has a removable side cover 12 on its open opening, which closes the opening of the receiving compartment 11, isolating the internal components of the receiving compartment 11 from the outside and providing good protection for the normal operation of the components inside the receiving compartment 11.

[0038] In some embodiments, the side cover 12 can be fixedly connected to the accommodating compartment 11 by providing fasteners on its edges; or the side cover 12 can be fixedly assembled onto the accommodating compartment 11 by providing mutually cooperating snap-fit ​​structures, such as the cooperation of snaps and snap holes, on the edges of the side cover 12 and the edges of the open surface of the accommodating compartment 11.

[0039] See Figures 1 to 2 In this embodiment, the lower part of the accommodating compartment 11 is provided with a bottom compartment 14, and the evaporator core 2 is inclinedly fixed inside the bottom compartment 14. By adjusting the inclined posture of the evaporator core 2 within the bottom compartment 14, the overall height of the air conditioning evaporator assembly in the Z direction is reduced, and / or the width in the X direction is thinned. This facilitates the installation of the evaporator assembly into the right side of the cab, improving the utilization rate of the space on the right side of the cab.

[0040] See Figure 5The evaporator core 2 has mounting brackets 23 on both sides. The evaporator core 2 includes a circulation pipe 211 and multiple heat sinks 22. The circulation pipe 211 serves as the core channel for refrigerant flow, controlling the flow direction of liquid refrigerant within the evaporator core 2. A pipe assembly 21 is located at the end of the circulation pipe 211. The pipe assembly 21 is generally used to connect other components of the refrigeration system (such as expansion valves and compressors), ensuring the orderly inflow and outflow of refrigerant into or out of the circulation pipe 211. Multiple heat sinks 22 are arranged around the circulation pipe 211, increasing the contact area with air and accelerating heat exchange. When air flows through the heat sinks 22, heat is absorbed by the refrigerant within the circulation pipe 211. The entire evaporator core 2 is fixedly connected to the base compartment 14 via the mounting brackets 23.

[0041] See Figures 1 to 2 On both sides of the bottom chamber 14, corresponding to the positions of the fixing frame 23, there are respectively a first fixing hole group 113 and a second fixing hole group 114. Both the first fixing hole group 113 and the second fixing hole group 114 include at least two fixing holes, and the fixing holes on the first fixing hole group 113 and the second fixing hole group 114 are arranged in the same linear pattern. Along the length direction of the fixing frame 23, corresponding to the positions of the fixing holes, there are fastening bolts 231. The fastening bolts 231 pass sequentially through the side wall of the bottom chamber 14 and the fixing holes on the fixing frame 23, thus fixing the evaporator core 2 within the bottom chamber 14.

[0042] See Figure 3 In some embodiments, the fixing holes are arranged along the Z-axis, and the arrangement direction of the fixing holes in the first fixing hole group is parallel to the arrangement direction of the fixing holes in the second fixing hole group. The first fixing hole group 113 and the second fixing hole group 114 are offset from each other by the same distance in opposite directions in the Y-direction, so that the projection of the evaporator core 2 on the XY plane forms an acute angle α with the X-direction. By tilting the evaporator core 2 in this way, the width and thickness of the air conditioning evaporator assembly in the X-direction can be reduced, so that the evaporator assembly as a whole does not occupy too much space on the right side of the cab, leaving enough space for the driver's right foot to move, avoiding interference when the driver uses his right foot to operate the equipment, and improving the driver's operating comfort.

[0043] See Figure 4In some embodiments, a top compartment 13 is provided at the top of the accommodating compartment 11, and the top compartment 13 is connected to the bottom compartment 14. Multiple fixing holes on the first fixing hole group 113 and multiple fixing holes on the second fixing hole group 114 are arranged along a linear direction with an acute angle β relative to the Z-axis, so that the projection of the evaporator core 2 on the YZ plane forms an acute angle β with the Y direction. By tilting the evaporator core 2 in this way, the height of the bottom compartment 14 in the Z direction can be reduced, allowing the space inside the top compartment 13 to be used for upgrading components inside the air conditioner evaporator assembly, such as replacing larger, more powerful heat exchange components, blowers, etc., to improve the temperature control performance of the air conditioner evaporator assembly.

[0044] See Figure 1 In this embodiment, the evaporator core 2 is provided with a pipe assembly 21, and the side of the bottom compartment 14 is provided with a guide groove 112 that matches the pipe assembly 21. The guide groove 112 is perpendicular to the direction of the fixing holes. Through the cooperation of the pipe assembly 21 and the guide groove 112, the tilt posture of the evaporator core 2 can be quickly adjusted, so that the fixing bracket 23 can be quickly positioned at the corresponding first fixing hole group 113 or second fixing hole group 114, effectively improving the installation efficiency of the evaporator core 2.

[0045] See Figure 2 The top compartment 13 houses a blower assembly 4. Multiple exhaust vents 132 are located on the top of the top compartment 13, and these vents connect to external air ducts. These multiple exhaust vents 132 increase the exhaust volume of the air conditioning evaporator assembly. A larger exhaust volume allows for faster adjustment of the ambient temperature, thereby effectively improving the temperature control performance of the air conditioning evaporator assembly. By guiding the airflow through external air ducts, the housing 1 does not require additional components with similar functions, further simplifying its structure and reducing its volume. This facilitates the installation of the air conditioning evaporator assembly into the right-side space of the cab.

[0046] See Figures 6 to 7 In some embodiments, the top compartment 13 has a first chamfer 131 on one outer side wall in the X direction. The first chamfer 131 is recessed into the interior of the box body 1 and extends to the bottom surface of the bottom compartment 14. And / or the bottom compartment 14 has a side cover 12 on one side in the X direction. The side cover 12 has a second chamfer 141 at the position corresponding to the bottom compartment 14. The second chamfer 141 is recessed into the interior of the box body 1 and extends to the bottom surface of the bottom compartment 14.

[0047] Both the first tangent angle 131 and the second tangent angle 141 can make the outer contour of the housing 1 fit better with the internal components of the housing 1, reduce unnecessary waste of internal space, and further reduce the thickness in the X and Y directions, so that the air conditioning evaporator assembly occupies as little space in the cab as possible, reducing the interference of the air conditioning evaporator assembly with the driver's right foot operation.

[0048] See Figure 2 In this embodiment, a water-heating pipe 3 is provided between the top compartment 13 and the bottom compartment 14 of the housing 1, and a fixing groove 111 for the water-heating pipe 3 is provided inside the housing 1. The function of the water-heating pipe 3 is to introduce a fluid medium with a temperature higher than the ambient temperature, so that the airflow in the air conditioning evaporator assembly is heated when passing through the water-heating pipe 3, and hot air is discharged from the exhaust port 132, thereby raising the temperature inside the mini excavator's cab. The water-heating pipe 3 increases the temperature control mode of the air conditioning evaporator assembly, enabling the air conditioning evaporator assembly to simultaneously exhaust both cold and hot air.

[0049] See Figure 1 and Figure 7 The side cover 12 has an air inlet 121 corresponding to the position of the bottom compartment 14, and a removable filter 122 is provided at the air inlet 121. Airflow in the mini excavator's cab passes through the air inlet 121, and the filter 122 prevents dust or other impurities in the air from entering the interior of the housing 1. This prevents the accumulation of dust on the components inside the housing 1, which could reduce the heat exchange efficiency of the gas. In the cold air mode of the air conditioning evaporator assembly, after the filtered airflow comes into contact with the evaporator core 2, heat is transferred to the evaporator core 2 through heat transfer. The cooled airflow is then exhausted from the exhaust vent 132 into the cab by the blower assembly 4, keeping the cab cool. In the hot air mode of the air conditioning evaporator assembly, after the filtered airflow comes into contact with the water heating pipe 3, heat is transferred from the water heating pipe 3 to the airflow through heat transfer, increasing the airflow temperature. The heated airflow is then exhausted from the exhaust vent 132 into the cab by the blower assembly 4, keeping the cab warm. Common detachable connection methods for filter screen 122 include fasteners such as bolts and screws, or snap-fit ​​connections and quick-release pins. As the usage time increases, filter screen 122 will quickly become clogged due to filtering dust. Therefore, a detachable filter screen 122 is easy to replace, which can ensure unobstructed airflow and gas purity at the air inlet 121, and ensure the normal operation of the air conditioner evaporator assembly.

[0050] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An air conditioner evaporator assembly comprising: The air conditioner evaporator assembly includes: The box (1) includes a storage compartment (11), and the lower part of the storage compartment (11) is provided with a bottom compartment (14); Evaporator core (2), which is inclinedly fixed inside the bottom chamber (14) to reduce the height of the bottom chamber (14) in the Z direction and / or to reduce the width of the bottom chamber (14) in the X direction.

2. The air conditioner evaporator assembly of claim 1, wherein, The evaporator core (2) is provided with a fixing bracket (23) on both sides; the bottom chamber (14) is provided with a first fixing hole group (113) and a second fixing hole group (114) on both sides corresponding to the fixing bracket (23), respectively. The first fixing hole group (113) and the second fixing hole group (114) each include no less than 2 fixing holes, and the multiple fixing holes on the first fixing hole group (113) and the multiple fixing holes on the second fixing hole group (114) are arranged along the same linear direction; the fixing bracket (23) is provided with a fastening bolt (231) that cooperates with the fixing hole in the length direction corresponding to the fixing hole.

3. The air conditioner evaporator assembly of claim 2, wherein, The fixing holes are arranged along the Z-axis direction, and the arrangement direction of the plurality of fixing holes in the first fixing hole group is parallel to the arrangement direction of the plurality of fixing holes in the second fixing hole group; the first fixing hole group (113) and the second fixing hole group (114) are offset from each other by the same distance in opposite directions in the Y direction, so that the projection of the evaporator core (2) on the XY plane forms an acute angle α with the X direction.

4. The air conditioner evaporator assembly of claim 2, wherein, The plurality of fixing holes on the first fixing hole group (113) and the plurality of fixing holes on the second fixing hole group (114) are arranged along a linear direction with an acute angle β relative to the Z axis, so that the projection of the evaporator core (2) on the YZ plane forms an acute angle β with the Y direction.

5. The air conditioner evaporator assembly of any one of claims 2-4, wherein, The evaporator core (2) is provided with a pipe assembly (21), and the side of the bottom compartment (14) is provided with a guide groove (112) that matches the pipe assembly (21). The guide groove (112) is perpendicular to the direction of the fixing holes.

6. The air conditioner evaporator assembly of any one of claims 1-4, wherein, The top of the accommodating compartment (11) is provided with a top compartment (13), which is connected to the bottom compartment (14); the top compartment (13) is provided with a blower assembly (4), and the top of the top compartment (13) is provided with multiple exhaust vents (132), which are connected to an external air duct.

7. The air conditioner evaporator assembly of claim 6, wherein, The top compartment (13) has a first chamfer (131) on one of its outer side walls in the X direction. The first chamfer (131) is recessed into the interior of the box (1) and extends to the bottom surface of the bottom compartment (14).

8. The air conditioner evaporator assembly of claim 6, wherein, The opening of the accommodating compartment (11) is provided with a side cover (12) for covering the opening. The side cover (12) is provided with a second chamfer (141) corresponding to the bottom compartment (14). The second chamfer (141) is recessed into the interior of the box (1) and extends to the bottom surface of the bottom compartment (14). The side cover (12) is provided with an air inlet (121) corresponding to the bottom compartment (14). The air inlet (121) is provided with a removable filter screen (122).

9. The air conditioner evaporator assembly of claim 6, wherein, The box (1) has a water heating pipe (3) between the top compartment (13) and the bottom compartment (14), and the inside of the box (1) has a fixing groove (111) for fixing the water heating pipe (3).

10. A micro excavator comprising a cab, characterized by The air conditioning evaporator assembly according to any one of claims 1-9 is provided in the right-side space of the driver's cab.

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