Direct expansion unit

Abstract

The utility model discloses a direct expansion unit, relates to the technical field of air conditioners, and aims to solve the problem that the direct expansion unit is inconvenient to maintain. The direct expansion unit comprises a shell and a refrigerant circulation system, a containing space is formed in the shell, the shell can comprise a frame and a plurality of panels, the panels are connected with the frame to form the containing space, and the refrigerant circulation system is arranged in the containing space and used for refrigerating or heating. And at least one panel in the plurality of panels is detachably connected with the frame body, so that the refrigerant circulating system is convenient to overhaul.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, especially to a direct expansion unit. BACKGROUND

[0002] With the continuous improvement of people's requirements for living and working environment, as an important device for adjusting indoor environment, air conditioning technology is constantly developing and innovating.

[0003] The direct expansion unit is a form of air conditioning product, the unit itself has a compressor, and the liquid refrigerant is directly evaporated (i.e. directly expanded) in the evaporator, thereby realizing air heat absorption refrigeration. This direct expansion refrigeration mode has high heat exchange efficiency, and does not require cooling water and cooling water system, and is convenient to install.

[0004] Since the direct expansion unit may fail during use, it needs to be overhauled, however, the direct expansion unit is large in size and has a whole structure, so it is inconvenient to overhaul. CONTENT OF THE PRESENT INVENTION

[0005] The present application aims to provide a direct expansion unit, and aims to solve the problem of inconvenient overhaul of the direct expansion unit.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The present application provides a direct expansion unit, which can include a shell and a refrigerant circulation system, the shell forms an accommodation space inside, the shell can include a frame and a plurality of panels, the plurality of panels are connected with the frame to form the accommodation space, the refrigerant circulation system is arranged in the accommodation space and is used for refrigeration or heating. At least one panel of the plurality of panels is detachably connected with the frame, so as to facilitate the overhaul of the refrigerant circulation system.

[0008] In this way, after the panel is detached, the refrigerant circulation system facing the panel can be overhauled, and the detachable design of the panel can increase the convenience of the maintenance of the direct expansion unit.

[0009] In some embodiments, the accommodation space can include a spaced-out air outlet channel and an accommodation cavity, the shell is formed with an air inlet and an air outlet which communicate with the air outlet channel, part of the refrigerant circulation system is arranged in the air outlet channel, and part of the refrigerant circulation system is also arranged in the accommodation cavity. The panel can include a first panel and a second panel, a plurality of first panels surround to form the air outlet channel, at least one first panel of the plurality of first panels is detachably connected with the frame, a plurality of second panels surround to form the accommodation cavity, and at least one second panel of the plurality of second panels is detachably connected with the frame.

[0010] In this way, when the first panel is removed, the part of the refrigerant circulation system arranged in the air outlet passage can be maintained, and when the second panel is removed, the part of the refrigerant circulation system arranged in the accommodating cavity can be maintained, so that the maintenance of the direct expansion unit is more convenient.

[0011] In some embodiments, the refrigerant circulation system can comprise a fan arranged in the air outlet passage and configured to flow air along the air outlet passage. The first panel can comprise a first plate body, at least part of the first plate body is arranged towards the fan and detachably connected with the frame. In this way, when the first plate body is removed, the fan can be maintained.

[0012] In some embodiments, the first plate body can comprise a first sub-plate body arranged towards the fan and detachably connected with the frame, and a second sub-plate body in the same plane as the first sub-plate body and fixedly connected with the frame. The direct expansion unit can further comprise a first reinforcing beam arranged between the first sub-plate body and the second sub-plate body and connected with the frame.

[0013] In this way, when the fan is maintained, only the first sub-plate body needs to be removed, and the second sub-plate body remains connected with the frame, so that the second sub-plate body can disperse the force borne by the frame, thereby making the structure more stable. In addition, the first reinforcing beam arranged between the first sub-plate body and the second sub-plate body and connected with the frame can also be used to disperse the force borne by the frame, further enhancing the stability of the frame.

[0014] In some embodiments, the refrigerant circulation system can further comprise a first heat exchanger arranged in the air outlet passage and located on the air inlet side of the fan. The first panel can further comprise a second plate body, and the second plate body is provided with an air inlet opening arranged towards the first heat exchanger. In this way, the first heat exchanger can be maintained through the air inlet opening.

[0015] In some embodiments, the fan is arranged above the first heat exchanger, and the second sub-plate body is arranged towards the first heat exchanger. In this way, the first sub-plate body is located above the second sub-plate body.

[0016] In some embodiments, the refrigerant circulation system can further comprise a compressor arranged in the accommodating cavity, at least one of the plurality of second panels is arranged towards the compressor and detachably connected with the frame; and / or, a second heat exchanger arranged in the accommodating cavity, at least one of the plurality of second panels is arranged towards the second heat exchanger and detachably connected with the frame; and / or, a valve arranged in the accommodating cavity, at least one of the plurality of second panels is arranged towards the valve and detachably connected with the frame.

[0017] In this way, when the second panel facing the compressor is disassembled, the compressor can be overhauled; when the second panel facing the second heat exchanger is disassembled, the second heat exchanger can be overhauled; and when the second panel facing the valve is disassembled, the valve can be overhauled.

[0018] In some embodiments, the bottom of the shell is provided with a mounting opening, and the direct expansion unit further comprises a whole machine base arranged at the mounting opening and connected with the frame body. The whole machine base can comprise a base body and a protruding connecting portion connected with the base body and used for connecting with the frame body.

[0019] Since the protruding connecting portion is fixedly connected with the base body and can be inserted into the mounting opening, the frame body can be fixedly connected with the base body, thereby enhancing the stability of the frame body.

[0020] In some embodiments, the direct expansion unit further comprises a compressor base and a second heat exchanger base. The compressor base is arranged in the accommodation space and located on the base body and used for mounting the compressor. The second heat exchanger base is arranged in the accommodation space and located on the base body and connected with the compressor base and used for mounting the second heat exchanger.

[0021] The compressor base and the second heat exchanger base are both located on the base body, and no foamed plate structure is arranged between the compressor base and the second heat exchanger base and the base body. In this way, the thickness of the base can be reduced, thereby reducing the installation space required by the direct expansion unit. Meanwhile, the compressor base is connected with the second heat exchanger base, thereby facilitating installation and maintenance.

[0022] Embodiments of the present application also provide a direct expansion unit, which can comprise a shell, an accommodation space formed in the shell, the shell can comprise a frame body and a plurality of panels, the plurality of panels are connected with the frame body to form the accommodation space, and at least one panel of the plurality of panels is detachably connected with the frame body. In this way, the panel can be disassembled to facilitate the overhaul of the direct expansion unit. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0024] Figure 1 Fig. 1 is a structural schematic diagram of a direct expansion unit provided by the present application;

[0025] Figure 2 Fig. 2 is another structural schematic diagram of the direct expansion unit shown in Fig. 1; and Figure 1 Fig. 3 is a structural schematic diagram of a direct expansion unit provided by the present application.

[0026] Figure 3 Fig. 3 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 4 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0027] Figure 4 Fig. 5 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 6 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0028] Figure 5 Fig. 7 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 8 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0029] Figure 6 Fig. 9 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0030] Figure 7 Fig. 10 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 11 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0031] Figure 8 Fig. 12 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 13 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0032] Figure 9 Fig. 14 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 15 is an enlarged view of a portion of the direct expansion unit shown in Fig. 14 at A;

[0033] Figure 10 Fig. 16 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 9 Fig. 17 is an enlarged view of a portion of the direct expansion unit shown in Fig. 16 at A;

[0034] Figure 11 Fig. 18 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 19 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0035] Figure 12 Fig. 20 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 21 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0036] Figure 13 Fig. 22 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 23 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0037] Figure 14 Fig. 24 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 25 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0038] Figure 15 Fig. 26 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 27 is an enlarged view of a portion of the direct expansion unit shown in Fig. 26 at A;

[0039] Figure 16 Fig. 28 is a structural schematic view of a direct expansion unit according to an embodiment of the present application; Figure 1 Fig. 29 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;

[0040] Figure 17 Fig. 30 is a structural schematic view of a direct expansion unit according to an embodiment of the present application;Figure 16 partial enlarged view of the direct expansion unit shown at B;

[0041] Figure 18 for Figure 1 fifteenth structural schematic view of the direct expansion unit shown;

[0042] Figure 19 for Figure 1 sixteenth structural schematic view of the direct expansion unit shown;

[0043] Figure 20 for Figure 1 seventeenth structural schematic view of the direct expansion unit shown.

[0044] Reference numerals: 100, direct expansion unit;

[0045] 10, housing; 101, air inlet; 102, air outlet; 11, containing space; 111, air outlet passage; 111A, first air outlet passage; 111B, second air outlet passage; 112, containing cavity; 12, frame body; 121, first upright column; 1211, first column body; 1212, second column body; 1213, third column body; 122, second upright column; 123, third upright column; 13, panel; 13A, first panel; 13B, second panel; 131, first plate body; 1311, first sub-plate body; 1312, second sub-plate body; 132, second plate body; 133, third plate body; 1331, third sub-plate body; 1332, fourth sub-plate body; 134, fourth plate body; 1341, fifth sub-plate body; 1342, sixth sub-plate body; 135, fifth plate body; 1351, seventh sub-plate body; 1352, eighth sub-plate body; 14, first reinforcing beam; 15, second reinforcing beam; 16, third reinforcing beam; 17, fourth reinforcing beam; 20, refrigerant circulation system; 21, fan; 22, first heat exchanger; 221, first mounting portion; 222, second mounting portion; 30, first partition plate; 301, outlet; 40, support member; 40A, support column; 41, first support column; 42, second support column; 43, third support column; 50, water pan; 501, drain hole; 51, water pan body; 52, extension plate; 60, height increasing member; 601, height increasing beam; 602, height increasing column; 61, first height increasing member; 62, second height increasing member; 70, first fixing member; 71, first connecting plate; 72, second connecting plate; 73, fixing strip; 80, second fixing member; 81, first bent edge; 82, support plate; 83, second bent edge; 90, second partition plate; 901, opening; 91, whole machine base; 911, base body; 9111, channel steel strip; 912, protruding connecting portion; 92, compressor base; 921, seat body; 922, compressor water pan; 93, second heat exchanger base. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified, the above directional description can be flexibly arranged in actual application under the condition of meeting the relative positional relationship shown in the drawings.

[0048] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the embodiments of the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of another identical element in the process, article or device including the element.

[0051] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration, in no way implying any preference or relation by equivalency. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are used in the specific manner to present the relevant concept.

[0052] With the development of global economy and the acceleration of urbanization process, people's requirements for living and working environment are continuously improved. As an important equipment for adjusting indoor environment, air conditioner technology is continuously developed and innovated with the increasing demand.

[0053] As a form of air conditioning products, the direct expansion unit is characterized in that the unit itself is provided with a compressor, and the liquid refrigerant in the refrigeration system is directly evaporated (i.e. directly expanded) in the evaporator, so as to realize the heat absorption and refrigeration of the air outside the evaporator. This direct expansion refrigeration method can reduce the loss of energy in the transmission process, has high heat exchange efficiency, and does not require cooling water and cooling water system, and is convenient to install.

[0054] Since the direct expansion unit may fail during use, it needs to be internally overhauled. However, the direct expansion unit is large in size and has a whole structure, so it is inconvenient to overhaul.

[0055] Based on this, the embodiments of the present application provide a direct expansion unit, which adopts a shell structure of detachable connection between a panel and a frame, so that the panel can be easily detached, thereby facilitating the overhaul of the components facing the panel.

[0056] Please refer to Figure 1 , Figure 1 A structure diagram of a direct expansion unit 100 provided by the present application is shown in FIG. 1. The direct expansion unit 100 can include a shell 10 and a refrigerant circulation system 20. The shell 10 has an accommodation space 11 formed therein, and the refrigerant circulation system 20 is arranged in the accommodation space 11 of the shell 10.

[0057] The refrigerant circulation system 20 is used for refrigeration or heating. Since the refrigerant circulation system 20 is arranged in the accommodation space 11 of the shell 10, it can effectively prevent the heat from being diffused to the outside during the transmission of the refrigerant, thereby reducing the energy loss and improving the energy efficiency of the direct expansion unit 100.

[0058] In some embodiments of the present application, the shell 10 can include a frame 12 and a plurality of panels 13. The plurality of panels 13 are connected with the frame 12 to form the accommodation space 11. In this way, the shell 10 adopts the structure of connection between the plurality of panels 13 and the frame 12, and the frame 12 is used for fixing and supporting the panels 13, which can enhance the stability of the shell 10.

[0059] In some embodiments, the panel 13 can include an inner plate, an outer plate, and a filling layer, the inner plate is spaced apart from the outer plate, and the filling layer is arranged between the inner plate and the outer plate to achieve thermal insulation between the inner plate and the outer plate. For example, the filling layer can be formed by foaming, and the inner plate and the outer plate are separated by the expansion of the foaming material, which can reduce the heat transfer between the inner plate and the outer plate, thereby reducing energy loss and improving the energy efficiency of the direct expansion unit 100.

[0060] Please refer to Figure 1 and Figure 2 , Figure 2 for Figure 1 the second structural diagram of the direct expansion unit 100 as shown, in some embodiments, the containing space 11 can include an air outlet passage 111 and a containing cavity 112, the air outlet passage 111 and the containing cavity 112 are spaced apart, part of the refrigerant circulation system 20 is arranged in the air outlet passage 111, and part of the refrigerant circulation system 20 is also arranged in the containing cavity 112. The panel 13 includes a first panel 13A and a second panel 13B, both of which are connected to the frame 12, a plurality of first panels 13A surround to form the air outlet passage 111, and a plurality of second panels 13B surround to form the containing cavity 112.

[0061] In this way, the air outlet passage 111 and the containing cavity 112 can be used to contain part of the refrigerant circulation system 20 respectively, and functional partitioning can be achieved, which can facilitate partitioned maintenance when the direct expansion unit 100 fails, and operation is more convenient.

[0062] Please refer to Figure 3 , Figure 3 for Figure 1 the third structural diagram of the direct expansion unit 100 as shown, in some embodiments of the present application, the shell 10 can also be provided with an air inlet 101 and an air outlet 102, both of which are in communication with the air outlet passage 111. In this way, air can enter the air outlet passage 111 from the air inlet 101 and flow out from the air outlet 102.

[0063] Please refer to Figure 4 , Figure 4 for Figure 1 the fourth structural diagram of the direct expansion unit 100 as shown, in some embodiments of the present application, the direct expansion unit 100 can also include a first partition 30, the first partition 30 is formed with an outlet 301, and the outlet 301 is arranged on the air outlet passage 111.

[0064] The refrigerant circulation system 20 can include a fan 21 connected to the first partition 30, and the fan 21 is used to make the airflow flow along the air outlet passage 111.

[0065] In some embodiments of the present application, at least part of the first partition 30 is arranged in the housing 10, and the fan 21 is arranged on the first partition 30 and located at the outlet 301. In this way, the fan 21 can make the air flow along the air outlet channel 111 through the outlet 301.

[0066] The refrigerant circulation system 20 can further include a first heat exchanger 22, at least part of the first heat exchanger 22 is arranged in the air outlet channel 111 and connected with the first partition 30. The first heat exchanger 22 can be an evaporator. The refrigerant in the evaporator absorbs heat when evaporating, and the air flowing through the evaporator can exchange heat with the refrigerant, so as to lower the temperature of the air and achieve refrigeration.

[0067] During the operation of the fan 21, the fan 21 can vibrate due to reasons such as imbalance of the blades or the impeller, poor lubrication of the bearing, or unstable air flow. Since the fan 21 and the first heat exchanger 22 are both connected to the first partition 30, the vibration of the fan 21 can be transmitted to the first partition 30 and then to the first heat exchanger 22, which can cause the first heat exchanger 22 to vibrate and cause parts to shift and other faults.

[0068] In order to prevent the vibration of the fan 21 from damaging the first heat exchanger 22, in some embodiments, the direct expansion unit 100 further includes a shock insulation layer. The shock insulation layer can be arranged between the first heat exchanger 22 and the first partition 30. In this way, the shock insulation layer can isolate the hard connection between the first heat exchanger 22 and the first partition 30, so as to prevent the vibration from being transmitted from the first partition 30 to the first heat exchanger 22 and causing damage to the first heat exchanger 22.

[0069] The shock insulation layer can also be arranged between the first partition 30 and the fan 21. In this way, the shock insulation layer can isolate the hard connection between the first partition 30 and the fan 21, so as to prevent the vibration from being transmitted from the fan 21 to the first partition 30, and then to the first heat exchanger 22, thereby preventing the vibration from damaging the first heat exchanger 22.

[0070] In some embodiments of the present application, the material of the shock insulation layer can be an elastic material. When the elastic material is subjected to vibration, it can elastically deform, thereby absorbing and consuming the energy of the vibration, and further reducing the transmission of the vibration between the fan 21 and the first partition 30, or between the first partition 30 and the first heat exchanger 22.

[0071] Optionally, the shock insulation layer can be thermal insulation cotton. In this way, the shock insulation layer can not only reduce the transmission of the vibration between the fan 21 and the first partition 30, or between the first partition 30 and the first heat exchanger 22, but also can play a role in thermal insulation, thereby reducing the heat loss of the air during the flow.

[0072] Optionally, the shock insulation layer can also be rubber, sponge or elastic plastic, which can realize the soft connection between the fan 21 and the first partition 30 or between the first partition 30 and the first heat exchanger 22, which is not limited in the present application.

[0073] Please refer to Figure 3 and Figure 4 , the first heat exchanger 22 is arranged on the side of the first partition 30 away from the fan 21, and the first heat exchanger 22 and the fan 21 are arranged in the vertical direction. In this way, the air can enter the air outlet 101 into the air outlet channel 111, and after being heated by the first heat exchanger 22, it enters the fan 21 through the outlet 301 on the first partition 30 and is discharged to the indoor.

[0074] Since the first heat exchanger 22 and the fan 21 are arranged in the vertical direction, the heated air can flow in the vertical direction, preventing energy loss caused by airflow turning. At the same time, the vertical arrangement of the two can effectively reduce the required floor area of the gas flow channel, thereby effectively saving the floor area in the machine room.

[0075] Please refer to Figure 5 , Figure 5 for Figure 1 the structure diagram of the direct expansion unit 100 shown in Figure 5, in some embodiments of the present application, the direct expansion unit 100 can also include a support 40 connected between the first partition 30 and the frame 12, for supporting the first partition 30. In this way, the support 40 can support the first partition 30 and in turn support the fan 21, and leave installation space for the first heat exchanger 22.

[0076] Please refer to Figure 6 , Figure 6 for the structure diagram of the frame 12 provided in the embodiments of the present application, in some embodiments of the present application, the frame 12 includes a first column 121, a second column 122 and a third column 123, the first column 121 extends in a first direction, the second column 122 extends in a second direction, and the third column 123 extends in a third direction. The first column 121, the second column 122 and the third column 123 are connected.

[0077] The first column 121, the second column 122 and the third column 123 respectively extend in different directions, which can form a stable support structure to support pressure from different directions, thereby enhancing the stability of the frame.

[0078] In some embodiments, the first direction can be the vertical direction, and the first column 121, the second column 122 and the third column 123 are perpendicular to each other. In this way, a cuboid frame can be formed, so that the space can be utilized reasonably and conveniently installed.

[0079] Please refer toFigure 7 , Figure 8 , Figure 9 and Figure 10 , Figure 7 for Figure 1 The sixth schematic diagram of the direct expansion unit 100 shown is shown. Figure 8 for Figure 1 The seventh schematic diagram of the direct expansion unit 100 shown is shown. Figure 9 for Figure 1 The eighth schematic diagram of the direct expansion unit 100 shown. Figure 10 for Figure 9 The enlarged view of the direct expansion unit 100 at point A is shown. In some embodiments of this application, the support member 40 may include a support column 40A. The support column 40A may include a first support column 41, a second support column 42, and a third support column 43. The first support column 41, the second support column 42, and the third support column 43 are arranged in a triangular pattern in the horizontal direction, and the first support column 41, the second support column 42, and the third support column 43 are all connected between the first partition plate 30 and the frame 12.

[0080] In this way, the first support column 41, the second support column 42, and the third support column 43 can all be used to support the first partition 30. Since the first support column 41, the second support column 42, and the third support column 43 are arranged in a triangular pattern in the horizontal direction, they can form three support points for the first partition 30 that are not located on the same straight line, making the support more stable.

[0081] In one possible structural design, the first support column 41, the second support column 42, and the third support column 43 can be arranged around the first heat exchanger 22.

[0082] In another possible structural design, the first support column 41, the second support column 42 and the third support column 43 can be arranged around the fan 21.

[0083] In some embodiments of this application, the frame 12 includes a first column 1211, a second column 1212, and a third column 1213. The first column 1211, the second column 1212, and the third column 1213 all extend in a vertical direction. The first column 1211 is connected to the first support column 41, the second column 1212 is connected to the second support column 42, and the third column 1213 is connected to the third support column 43.

[0084] In this way, the pressure borne by the first support column 41, the second support column 42 and the third support column 43 can be transmitted to the first column 1211, the second column 1212 and the third column 1213, thereby distributing the force to the frame 12, thus increasing the load-bearing capacity of the support member 40.

[0085] In some embodiments of the present application, the first column 1211 is arranged outside the first support column 41 and is attached to the first support column 41; the second column 1212 is arranged outside the second support column 42 and is attached to the second support column 42; and the third column 1213 is arranged outside the third support column 43 and is attached to the third support column 43.

[0086] In this way, the contact area of the first support column 41 with the first column 1211, the second support column 42 with the second column 1212, and the third support column 43 with the third column 1213 can be increased, so that the frame is more evenly stressed, and the load-bearing capacity of the support 40 is further improved.

[0087] In some embodiments of the present application, the first support column 41 is provided with a positioning hole, and after the first support column 41 is attached to the first column 1211, a self-tapping screw is used to fixedly connect the first support column 41 to the first column 1211 at the positioning hole.

[0088] In this way, the connection between the first support column 41 and the first column 1211 can be more stable, and shaking due to vibration of the fan 21 during movement can be prevented.

[0089] In addition, using a self-tapping screw for connection can directly screw a screw into the first column 1211 without pre-punching the first column 1211, forming a firm connection, so that installation is more convenient, thereby reducing installation time and cost.

[0090] In some embodiments of the present application, the fan 21 can be an electrical commutation fan (EC fan). The EC fan is a permanent magnet synchronous motor fan driven by electronic commutation technology. It uses a digital brushless direct current outer rotor motor as a power source and precisely controls the motor through an electronic control unit to achieve speed regulation and wind volume control.

[0091] Due to the small size and light weight of the EC fan, it can adapt to various compact installation environments, thereby reducing the size of the direct expansion unit 100 and saving space.

[0092] Please refer to Figure 11 and Figure 12 , Figure 11 for Figure 1 the ninth structure diagram of the direct expansion unit 100, Figure 12 for Figure 1As shown in FIG. 10, the direct expansion unit 100 can further include a water pan 50 arranged in the shell 10, and the first heat exchanger 22 is arranged on the water pan 50, and the angle between the plane on which the first heat exchanger 22 is arranged and the plane on which the water pan 50 is arranged is greater than 0° and less than 90°.

[0093] As the first heat exchanger 22 is arranged on the water pan 50, the condensed water can flow into the water pan 50 when the first heat exchanger 22 operates in the refrigeration mode, because the water vapor in the air is condensed into water under the action of heat absorption of the refrigerant. The angle between the plane on which the first heat exchanger 22 is arranged and the plane on which the water pan 50 is arranged is greater than 0° and less than 90°, that is, the first heat exchanger 22 is arranged obliquely on the water pan 50, so that the first heat exchanger 22 can flow smoothly into the water pan 50, and the condensed water is prevented from accumulating on the surface of the first heat exchanger 22 to cause corrosion of the first heat exchanger 22.

[0094] At the same time, the first heat exchanger 22 is arranged obliquely on the water pan 50, so that the first heat exchanger 22 can be arranged more compactly above the water pan 50, thereby improving the space utilization and saving the volume of the direct expansion unit 100.

[0095] Specifically, in some embodiments, at least part of the first heat exchanger 22 is located between the air inlet 101 and the air outlet 102, and the angle between the windward surface of the first heat exchanger 22 and the plane on which the water pan 50 is arranged is greater than 0° and less than 90°.

[0096] In this way, the first heat exchanger 22 can divide the air outlet channel 111 into a first air outlet channel 111A located on the air inlet side of the first heat exchanger 22 and a second air outlet channel 111B located on the air outlet side of the first heat exchanger 22. Since the angle between the windward surface of the first heat exchanger 22 and the plane on which the water pan 50 is arranged is greater than 0° and less than 90°, at least part of the first air outlet channel 111A and at least part of the second air outlet channel 111B can be located at the same horizontal height, thereby reducing the space layout requirement of the air outlet channel 111 in the height direction, and further reducing the height of the direct expansion unit 100 and saving the space occupied by the unit.

[0097] In addition, the angle between the windward surface of the first heat exchanger 22 and the plane on which the water pan 50 is arranged is greater than 0° and less than 90°, which can increase the windward area of the first heat exchanger 22, thereby improving the heat exchange efficiency of the first heat exchanger 22.

[0098] In some embodiments, the water receiving tray 50 is provided with a drain hole 501, and the condensate pipe of the water receiving tray 50 is connected to the drain hole 501, which can be used to drain the condensate in the water receiving tray 50.

[0099] In some embodiments, the outer wall of the water receiving tray 50 may be provided with heat insulation cotton to ensure that no condensation forms on the outer wall of the water receiving tray 50, thereby preventing condensation from damaging other components in the unit.

[0100] In some embodiments of this application, the direct expansion unit 100 may further include a heightening member 60, which is disposed on the water receiving pan 50. The first heat exchanger 22 may include a first mounting part 221 and a second mounting part 222, which are disposed opposite to each other. The first mounting part 221 is connected to or abuts against the end of the heightening member 60 away from the water receiving pan 50, and the second mounting part 222 is connected to or abuts against the water receiving pan 50.

[0101] The first heat exchanger 22 is connected to or abuts against both the riser 60 and the water receiving pan 50, so that the first heat exchanger 22 is inclined on the water receiving pan 50. In this way, multiple stress points can be formed on the first heat exchanger 22, thereby making the connection of the first heat exchanger 22 more stable and enhancing the stability of the direct expansion unit 100.

[0102] In some embodiments of this application, at least a portion of the windward side of the first heat exchanger 22 may constitute a first mounting portion 221, and at least a portion of the sidewall of the first heat exchanger 22 away from the first mounting portion 221 and at least a portion of the windward side may constitute a second mounting portion 222.

[0103] In this way, the first heat exchanger 22 can be connected or abutted to the elevating member 60 and the water receiving tray 50 without the need for a separate mechanism, further improving the space utilization rate.

[0104] Please refer to Figure 13 and Figure 14 , Figure 13 for Figure 1 The diagram shown is 11 of the structural schematic diagrams of the direct expansion unit 100. Figure 14 for Figure 1 The schematic diagram of the direct expansion unit 100 shown in Figure 12 illustrates that, in some embodiments of this application, the raising member 60 may include a first raising member 61 and a second raising member 62, which are spaced apart on the water receiving tray 50. The direct expansion unit 100 may also include a first fixing member 70, which is connected to the ends of the first raising member 61 and the second raising member 62 away from the water receiving tray 50, and at least a portion of the first fixing member 70 contacts the surface of the first mounting portion 221.

[0105] Thus, the first and second heightening members 61 and 62 can form fulcrums for the first heat exchanger 22, thereby increasing the stability of the first heat exchanger 22. Since the first fixing member 70 is connected to the ends of the first and second heightening members 61 and 62 away from the water pan 50, and at least part of the first fixing member 70 is in surface contact with the first mounting portion 221, the first fixing member 70 can be connected between the first and second heightening members 61 and 62 and the first mounting portion 221, and the support area for the first mounting portion 221 can be increased, thereby further increasing the stability of the first heat exchanger 22.

[0106] In one possible structural design, at least part of the first fixing member 70 can be a first fixing strip, which is in surface contact with the first mounting portion 221.

[0107] In another possible structural design, at least part of the first fixing member 70 can be a first fixing plate, which is in surface contact with the first mounting portion 221.

[0108] In some embodiments, the first and second heightening members 61 and 62 can each include a heightening beam 601 arranged in the water pan 50 and a heightening column 602, one end of which is connected to the heightening beam 601 and the other end of which is connected to the first fixing member 70. For example, the heightening beam 601 can be fixedly connected to the water pan 50 by welding.

[0109] In this way, the contact area between the first and second heightening members 61 and 62 and the water pan 50 can be increased, thereby making the first and second heightening members 61 and 62 more stable.

[0110] Please refer to Figure 13 and Figure 15 , Figure 15 for Figure 1 the structural schematic diagram of the direct expansion unit 100 shown in FIG. 13. In some embodiments of the present application, the first fixing member 70 can include a first connecting plate 71, a second connecting plate 72, and a fixing strip 73, the first connecting plate 71 being connected to the first heightening member 61, the second connecting plate 72 being connected to the second heightening member 62, the fixing strip 73 extending along the arrangement direction of the first and second heightening members 61 and 62, the fixing strip 73 being connected to the first and second connecting plates 71 and 72 and being in surface contact with the first mounting portion 221.

[0111] In this way, the contact area between the first fixing member 70 and the first and second heightening members 61 and 62 can be increased, thereby making the connection of the first fixing member 70 more stable, and further enhancing the stability of the first heat exchanger 22.

[0112] In some embodiments, the first connecting plate 71 and the first elevating member 61, and the second connecting plate 72 and the second elevating member 62, can be connected by screws. This makes the connection more secure and further enhances the stability of the first heat exchanger 22.

[0113] In one possible structural design, the arrangement direction of the first heightening member 61 and the second heightening member 62 is perpendicular to the arrangement direction of the first mounting portion 221 and the second mounting portion 222. In another possible structural design, the arrangement direction of the first heightening member 61 and the second heightening member 62 is parallel to the arrangement direction of the first mounting portion 221 and the second mounting portion 222.

[0114] Please refer to Figure 12 , Figure 13 , Figure 16 and Figure 17 , Figure 16 for Figure 1 The fourteenth schematic diagram of the direct expansion unit 100 shown is as follows. Figure 17 for Figure 16 The enlarged view of the direct expansion unit 100 at point B is shown. In some embodiments of this application, the direct expansion unit 100 may further include a second fixing member 80, which is connected to the water receiving tray 50, and at least a portion of the second fixing member 80 is in contact with the surface of the second mounting portion 222.

[0115] In this way, the second fixing member 80 can be connected between the water receiving pan 50 and the second mounting part 222, and the support area of ​​the second mounting part 222 can be increased, thereby enhancing the stability of the first heat exchanger 22.

[0116] In some embodiments of this application, the second fastener 80 may include a first bent edge 81 and a support plate 82. The first bent edge 81 is connected to the water receiving tray 50, the support plate 82 is connected to the first bent edge 81, and the support plate 82 is in contact with the side wall surface of the first heat exchanger 22.

[0117] Thus, the second fixing member 80 can abut against the first heat exchanger 22, so that the second mounting part 222 is connected or abuts against the water receiving tray 50. Since the support plate 82 is in contact with the side wall of the first heat exchanger 22, the contact area between the second fixing member 80 and the first heat exchanger 22 can be increased, thereby making the installation of the first heat exchanger 22 more stable.

[0118] It can be understood that when the arrangement direction of the first and second heightening members 61 and 62 is perpendicular to the arrangement direction of the first and second mounting portions 221 and 222, the extension direction of the support plate 82 is perpendicular to the arrangement direction of the first and second heightening members 61 and 62. When the arrangement direction of the first and second heightening members 61 and 62 is parallel to the arrangement direction of the first and second mounting portions 221 and 222, the extension direction of the support plate 82 is parallel to the arrangement direction of the first and second heightening members 61 and 62.

[0119] In some embodiments of the present application, the second fixing member 80 can further include a second bent edge 83 connected to the side of the support plate 82 away from the first bent edge 81, and the second bent edge 83 is in contact with at least part of the windward surface of the first heat exchanger 22.

[0120] In this way, the first heat exchanger 22 can be prevented from sliding on the support plate 82, thereby preventing the first heat exchanger 22 from deviating during operation.

[0121] In some embodiments of the present application, the water pan 50 can further include a water pan body 51 and an extension plate 52 connected between the water pan body 51 and the first bent edge 81, so that the extension plate 52 can facilitate the connection between the water pan body 51 and the first bent edge 81, preventing the water pan body 51 from leaking due to the direct connection between the first bent edge 81 and the water pan body 51.

[0122] In some embodiments, the first bent edge 81 can be connected with the extension plate 52 by screws, so that the connection between the two can be more stable.

[0123] In some embodiments of the present application, the projection of the second fixing member 80 and / or the first heat exchanger 22 on the plane of the water pan 50 is located in the water pan 50.

[0124] The projection of the second fixing member 80 on the plane of the water pan 50 is located in the water pan 50, which can reduce the spatial layout requirement of the second fixing member 80 in the horizontal direction, and the projection of the first heat exchanger 22 on the plane of the water pan 50 is located in the water pan 50, which can prevent the condensed water on the first heat exchanger 22 from flowing to the outside of the water pan 50.

[0125] Please refer to Figure 1 , Figure 2 and Figure 13 In some embodiments of the present application, the direct expansion unit 100 can further include a second partition plate 90 for separating the air outlet channel 111 from the containing cavity 112, which can reduce the interference between the air outlet channel 111 and the containing cavity 112, and improve the operation efficiency of the overall system.

[0126] In some embodiments of the present application, the refrigerant circulation system 20 can further comprise a compressor and a second heat exchanger, and the compressor, the second heat exchanger and the first heat exchanger 22 are connected by a refrigerant circulation pipeline to form a refrigerant circulation loop. The refrigerant circulation pipeline can comprise a gas pipeline and a liquid pipeline, both of which are used for refrigerant flow.

[0127] In order to connect the refrigerant circulation pipeline, the second partition plate 90 is provided with an opening 901, and the refrigerant circulation pipeline connects the first heat exchanger 22 and the second heat exchanger through the opening 901, and / or the refrigerant circulation pipeline connects the first heat exchanger 22 and the compressor through the opening 901.

[0128] In this way, the layout of the refrigerant circulation pipeline can be simplified, and the refrigerant circulation pipeline can be directly connected between the air outlet passage 111 and the containing cavity 112 through the opening 901, thereby shortening the length of the refrigerant circulation pipeline and reducing the energy loss of the refrigerant in the circulation process.

[0129] In some embodiments, the water pan 50 can be connected to the second partition plate 90, and the water pan 50 can further comprise a foot connected to the outer wall of the water pan 50, and the foot can be fixedly connected to the second partition plate, so as to fix the water pan 50 and prevent the water pan 50 from shaking or deviating during the operation of the direct expansion unit 100.

[0130] In some embodiments of the present application, the refrigerant circulation system 20 can further comprise a solenoid valve 23 arranged on the refrigerant circulation pipeline for controlling the refrigerant circulation pipeline. The solenoid valve 23, the gas pipeline and the liquid pipeline are arranged on the windward side of the first heat exchanger 22.

[0131] In this way, since the windward side of the first heat exchanger 22 is the air that has not been heat exchanged, and the leeward side of the first heat exchanger 22 is the air that has been heat exchanged, if the solenoid valve 23, the gas pipeline and the liquid pipeline are arranged on the leeward side of the first heat exchanger 22, the refrigerant in the gas pipeline and the liquid pipeline will exchange heat with the air that has been heat exchanged again, thereby reducing the heat exchange efficiency of the unit.

[0132] In addition, arranging the solenoid valve 23, the gas pipeline and the liquid pipeline on the windward side of the first heat exchanger 22 can prevent the opening on the leeward side of the first heat exchanger 22, so that the air that has not been heat exchanged enters the leeward side of the first heat exchanger 22 from the containing cavity 112 to exchange heat, thereby reducing the refrigeration or heating intensity of the unit.

[0133] Please refer to Figure 1 to Figure 19 , Figure 18 for Figure 1 the fifteenth structure schematic diagram of the direct expansion unit 100 shown in Figure 19 for Figure 1As shown in the sixteenth structural schematic view of the direct expansion unit 100, at least one of the plurality of panels 13 of the shell 10 is detachably connected with the frame 12 in some embodiments of the present application, because internal maintenance is required during use of the direct expansion unit 100.

[0134] In this way, the panel 13 can be detached for maintenance of the refrigerant circulation system 20 facing the panel 13, and the detachable design of the panel 13 can increase the convenience of maintenance of the direct expansion unit 100.

[0135] In some embodiments of the present application, the plurality of first panels 13A surround the air outlet channel 111, at least one of the plurality of first panels 13A is detachably connected with the frame 12, and the plurality of second panels 13B surround the accommodation cavity 112, at least one of the plurality of second panels 13B is detachably connected with the frame 12.

[0136] In this way, when the first panel 13A is removed, the part of the refrigerant circulation system 20 arranged in the air outlet channel 111 can be maintained, and when the second panel 13B is removed, the part of the refrigerant circulation system 20 arranged in the accommodation cavity 112 can be maintained, so that the maintenance of the direct expansion unit 100 is more convenient.

[0137] In some embodiments of the present application, the fan 21 is arranged in the air outlet channel 111, and the first panel 13A can include a first plate body 131, at least part of the first plate body 131 is arranged towards the fan 21 and detachably connected with the frame 12. In this way, when the first plate body 131 is removed, the fan 21 can be maintained.

[0138] However, if the entire first plate body 131 is removed for maintenance of the fan 21, the structure around the original first plate body 131 is only supported by the frame 12, which may cause deformation of the frame 12 due to uneven stress.

[0139] Therefore, in some embodiments of the present application, the first plate body 131 can include a first sub-plate body 1311 and a second sub-plate body 1312, the first sub-plate body 1311 is arranged towards the fan 21 and detachably connected with the frame 12, and the second sub-plate body 1312 is in the same plane as the first sub-plate body 1311 and fixedly connected with the frame 12. The direct expansion unit 100 can further include a first reinforcing beam 14 arranged between the first sub-plate body 1311 and the second sub-plate body 1312 and connected with the frame 12.

[0140] In this way, when the fan 21 is maintained, only the first sub-plate body 1311 needs to be removed, and the second sub-plate body 1312 remains connected to the frame 12. In this way, the second sub-plate body 1312 can disperse the force borne by the frame 12, thereby making the structure more stable. In addition, the first reinforcing beam 14 is arranged between the first sub-plate body 1311 and the second sub-plate body 1312 and connected to the frame 12, and can also be used to disperse the force borne by the frame 12, thereby further enhancing the stability of the frame 12.

[0141] In a possible structural design, the first sub-plate body 1311 and the second sub-plate body 1312 can be arranged in a vertical direction, and in this case, the first sub-plate body 1311 is located above the second sub-plate body 1312. In another possible structural design, the first sub-plate body 1311 and the second sub-plate body 1312 can be at the same height in a horizontal direction.

[0142] In some embodiments, the first panel 13A can further include a second plate body 132, and the second plate body 132 is provided with an air inlet 101, which is arranged towards the first heat exchanger 22. In this way, the first heat exchanger 22 can be maintained through the air inlet 101.

[0143] In some embodiments, the fan 21 is located above the first heat exchanger 22, and the first sub-plate body 1311 is located above the second sub-plate body 1312. Therefore, the second sub-plate body 1312 can be arranged towards the first heat exchanger 22.

[0144] In some embodiments of the present application, the second panel 13B can include a third plate body 133, a fourth plate body 134, and a fifth plate body 135. In some embodiments, the refrigerant circulation system 20 can further include a compressor, and the compressor is arranged in the accommodation cavity 112. At least one of the plurality of second panels 13B is arranged towards the compressor and detachably connected to the frame 12, that is, the third plate body 133 is arranged towards the compressor and detachably connected to the frame 12. In this way, when the third plate body 133 is removed, the compressor can be maintained.

[0145] In some embodiments, the refrigerant circulation system 20 can further include a second heat exchanger, and the second heat exchanger is arranged in the accommodation cavity 112. At least one of the plurality of second panels 13B is arranged towards the second heat exchanger and detachably connected to the frame 12, that is, the fourth plate body 134 is arranged towards the second heat exchanger and detachably connected to the frame 12. In this way, when the fourth plate body 134 is removed, the second heat exchanger can be maintained.

[0146] In some embodiments of the present application, the refrigerant circulation system 20 can further include a valve, a gas pipe and a liquid pipe, at least part of the valve, the gas pipe and the liquid pipe being arranged in the accommodating cavity 112, at least one of the second panels 13B among the plurality of second panels 13B being arranged towards the valve, the gas pipe and the liquid pipe and detachably connected with the frame 12, that is, the fifth plate body 135 is arranged towards the valve, the gas pipe and the liquid pipe and detachably connected with the frame 12. In this way, when the fifth plate body 135 is detached, the valve, the gas pipe and the liquid pipe can be overhauled.

[0147] In some embodiments, the third plate body 133 can include a third sub-plate body 1331 and a fourth sub-plate body 1332, the third sub-plate body 1331 and the fourth sub-plate body 1332 can be arranged with the second reinforcing beam 15, the third sub-plate body 1331 is detachably connected to the frame 12, the fourth sub-plate body 1332 is fixedly connected to the frame 12, and the second reinforcing beam 15 is also connected to the frame 12. In this way, when the third sub-plate body 1331 is detached, the compressor can be overhauled, and the fourth sub-plate body 1332 and the second reinforcing beam 15 are used to enhance the stability of the frame 12.

[0148] In some embodiments, the fourth sub-plate body 1332 and the second reinforcing beam 15 can each be arranged as two, respectively connected to opposite sides of the third sub-plate body 1331, so as to further enhance the stability of the frame 12.

[0149] In some embodiments, the fourth plate body 134 can include a fifth sub-plate body 1341 and a sixth sub-plate body 1342, the fifth sub-plate body 1341 and the sixth sub-plate body 1342 can be arranged with a third reinforcing beam 16, the fifth sub-plate body 1341 is detachably connected to the frame 12, the sixth sub-plate body 1342 is fixedly connected to the frame 12, and the third reinforcing beam 16 is also connected to the frame 12. In this way, when the fifth sub-plate body 1341 is detached, the second heat exchanger can be overhauled, and the sixth sub-plate body 1342 and the third reinforcing beam 16 are used to enhance the stability of the frame 12.

[0150] In some embodiments, the fifth plate body 135 can include a seventh sub-plate body 1351 and an eighth sub-plate body 1352, the seventh sub-plate body 1351 and the eighth sub-plate body 1352 can be arranged with a fourth reinforcing beam 17, the seventh sub-plate body 1351 is detachably connected to the frame 12, the eighth sub-plate body 1352 is fixedly connected to the frame 12, and the fourth reinforcing beam 17 is also connected to the frame 12. In this way, when the seventh sub-plate body 1351 is detached, the valve, the gas pipe and the liquid pipe can be overhauled, and the eighth sub-plate body 1352 and the fourth reinforcing beam 17 are used to enhance the stability of the frame 12.

[0151] In some embodiments of the present application, the second heat exchanger can be a shell-and-tube heat exchanger, which has the characteristics of small volume, high heat exchange efficiency and no condensation. By using the shell-and-tube heat exchanger as the second heat exchanger, the heat exchanger water pan does not need to be arranged, and the space requirement of the direct expansion unit 100 can be saved.

[0152] Please refer to Figure 1 to Figure 20 , Figure 20 for Figure 1 the seventeenth structure schematic diagram of the direct expansion unit 100, in some embodiments of the present application, the bottom of the shell 10 is provided with a mounting port, and the direct expansion unit 100 can further include a whole machine base 91, which is arranged at the mounting port and connected with the frame 12. The whole machine base 91 can include a base body 911 and a protruding connecting portion 912 connected with the base body 911.

[0153] The base body 911 includes a plurality of channel steel strips 9111 arranged at intervals to form a hollow structure. In this way, the base body 911 can facilitate heat dissipation of the refrigerant circulation system 20 in the accommodating cavity 112, and prevent component failure caused by poor heat dissipation.

[0154] The bottom end of the first column 121 is provided with an opening, the protruding connecting portion 912 is fixedly connected with the base body 911, and the protruding connecting portion 912 can be inserted into the opening at the bottom end of the first column 121. In this way, the frame 12 can be fixedly connected with the base body 911, thereby enhancing the stability of the frame 12.

[0155] In some embodiments of the present application, the direct expansion unit 100 can further include a compressor base 92 and a second heat exchanger base 93, both of which are arranged in the accommodating space 11 and located on the base body 911. The compressor base 92 can be connected with the second heat exchanger base 93, the compressor base 92 is used for installing the compressor, and the second heat exchanger base 93 is used for installing the second heat exchanger.

[0156] The compressor base 92 and the second heat exchanger base 93 are both located on the base body 911, and no foaming plate structure is arranged between the compressor base 92, the second heat exchanger base 93 and the base body 911. In this way, the thickness of the base can be reduced, thereby reducing the space required by the direct expansion unit 100.

[0157] The compressor base 92 and the second heat exchanger base 93 can be fixedly connected by welding, which facilitates installation and maintenance.

[0158] Since the compressor generates condensate water during operation, the compressor base 92 can include a base body 921 and a compressor water pan 922 connected between the base body 921 and the base body 911 for containing the condensate water generated by the compressor.

[0159] In the description of the specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0160] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A direct expansion unit, characterized by, The direct expansion unit comprises: a shell, a containing space being formed in the shell; the shell comprises: a frame; a plurality of panels, the plurality of panels being connected with the frame to form the containing space; a refrigerant circulation system, the refrigerant circulation system being arranged in the containing space, the refrigerant circulation system being used for refrigeration or heating; wherein at least one panel of the plurality of panels is detachably connected with the frame to facilitate maintenance of the refrigerant circulation system; a bottom of the shell is provided with a mounting port; the direct expansion unit further comprises: a whole machine base, the whole machine base being arranged at the mounting port and being connected with the frame; the whole machine base comprises: a base body, the base body comprising a plurality of spaced apart channel steel strips to form a hollow structure.

2. A direct expansion unit as set forth in claim 1, wherein the containing space comprises: a spaced apart air outlet channel and a containing cavity, the shell being formed with an air inlet and an air outlet which are in communication with the air outlet channel; part of the refrigerant circulation system is arranged in the air outlet channel, and part of the refrigerant circulation system is also arranged in the containing cavity; the panel comprises: a first panel, a plurality of the first panels surrounding to form the air outlet channel, at least one first panel of the plurality of first panels being detachably connected with the frame; a second panel, a plurality of the second panels surrounding to form the containing cavity, at least one second panel of the plurality of second panels being detachably connected with the frame.

3. A direct expansion unit as set forth in claim 2, wherein, the refrigerant circulation system comprises: a fan, the fan being arranged in the air outlet channel, the fan being used for making airflow flow along the air outlet channel; the first panel comprises: a first plate body, at least part of the first plate body being arranged towards the fan, and the first plate body being detachably connected with the frame.

4. A direct expansion unit as set forth in claim 3, wherein the first plate body comprises: a first sub-plate body, the first sub-plate body being arranged towards the fan, and the first sub-plate body being detachably connected with the frame; a second sub-plate body, the second sub-plate body being located in the same plane as the first sub-plate body, and the second sub-plate body being fixedly connected with the frame; the direct expansion unit further comprises: a first reinforcing beam, the first reinforcing beam being arranged between the first sub-plate body and the second sub-plate body, and the first reinforcing beam being connected with the frame.

5. A direct expansion unit as set forth in claim 4, wherein, the refrigerant circulation system comprises: a first heat exchanger, the first heat exchanger being arranged in the air outlet channel, the first heat exchanger being located at an air inlet side of the fan; the first panel comprises: a second plate body, the air inlet being arranged on the second plate body, the air inlet being arranged towards the first heat exchanger.

6. A direct expansion unit as set forth in claim 5, wherein, the fan is arranged above the first heat exchanger, and the second sub-plate body is arranged towards the first heat exchanger.

7. A direct expansion unit as set forth in claim 2, wherein the refrigerant circulation system further comprises: a compressor, the compressor being arranged in the containing cavity, at least one second panel of the plurality of second panels being arranged towards the compressor, and the at least one second panel being detachably connected with the frame; and / or, a second heat exchanger, the second heat exchanger being arranged in the containing cavity, at least one second panel of the plurality of second panels being arranged towards the second heat exchanger, and the at least one second panel being detachably connected with the frame; and / or, a valve, the valve being arranged in the containing cavity, at least one second panel of the plurality of second panels being arranged towards the valve, and the at least one second panel being detachably connected with the frame.

8. A direct expansion unit as set forth in claim 1, wherein, the whole machine base further comprises: The protruding connecting part is connected with the base body and used for connecting with the frame body.

9. A direct expansion unit as set forth in claim 1, wherein, The direct expansion unit further comprises: A compressor base is arranged in the accommodating space and on the base body and used for mounting a compressor; A second heat exchanger base is arranged in the accommodating space, located on the base body and connected with the compressor base, and used for mounting a second heat exchanger.

10. A direct expansion unit, characterized by, Comprise: A shell is formed with an accommodating space inside; the shell comprises: A frame body; A plurality of panels are connected with the frame body to form the accommodating space; At least one of the plurality of panels is detachably connected with the frame body; The bottom of the shell is provided with a mounting opening; The direct expansion unit further comprises: A whole machine base is arranged at the mounting opening and connected with the frame body; The whole machine base comprises: A base body comprising a plurality of spaced apart channel steel strips to form a hollow structure.

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