Coil module and air handling unit

Abstract

The present application discloses a coil module and an air handling unit. The coil module (10) comprises a housing (100), a heat exchange assembly (200), a sensing assembly (300), an electric control box (400), and a wire (500). An accommodating cavity (110) is provided inside the housing (100), the housing (100) comprises a first side plate (120), and the first side plate (120) is provided with a wire passing hole (1221) in communication with the accommodating cavity (110); the heat exchange assembly (200) is disposed in the accommodating cavity (110), the heat exchange assembly (200) comprises heat exchange piping (210) used for circulating a refrigerant, an external connector (220) is provided on the side of the heat exchange piping (210) facing the first side plate (120), and the external connector (220) passes through the first side plate (120); the sensing assembly (300) comprises a sensor (310), the sensor (310) is used for sensing the refrigerant around the sensor (310), and the sensor (310) is arranged in the accommodating cavity and connected to the first side plate (120); the electric control box (400) is arranged outside the accommodating cavity (110) and connected to the housing (100); and the wire (500) passes through the wire passing hole (1121), and has one end electrically connected to the sensor (310) and the other end electrically connected to the electric control box (400).

Description

Coil units and air handling units

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411546697.2, filed on October 31, 2024, entitled "Coil Unit and Air Handling Unit", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air handling technology, and in particular to a coil unit and an air handling unit. Background Technology

[0004] The coil unit controls the temperature of the external environment through heat exchange. Specifically, the coil unit contains a heat exchange assembly, and the heat exchange piping of the assembly contains refrigerant. The heat exchange function of the assembly is achieved through the evaporation or condensation of the refrigerant. The heat exchange assembly has multiple sets of piping connections, where refrigerant is prone to leakage. When the refrigerant is a flammable gas, the leakage poses a significant safety hazard. Therefore, sensors are needed to monitor the refrigerant concentration within the coil unit in real time to ensure that any refrigerant leakage can be detected and addressed immediately.

[0005] To ensure the safe operation of the coil unit, it is necessary to periodically inspect the electronic components installed within the coil unit, such as sensors and control boxes. However, the inventors found that current inspection fixtures are complex, time-consuming, and labor-intensive. Summary of the Invention

[0006] This application aims to at least partially solve one of the technical problems existing in the prior art, and to this end, this application proposes a coil unit and an air handling unit.

[0007] The coil unit according to the first aspect of this application includes:

[0008] The housing has an internal cavity, and the housing includes a first side plate with a through hole communicating with the cavity.

[0009] A heat exchange assembly is disposed within the receiving cavity. The heat exchange assembly includes a heat exchange pipeline for transmitting refrigerant. An external connector is provided on the side of the heat exchange pipeline facing the first side plate, and the external connector passes through the first side plate.

[0010] The sensing component includes a sensor for sensing the refrigerant around itself, the sensor being disposed in the receiving cavity and connected to the first side plate;

[0011] An electrical control box is located outside the receiving cavity and connected to the housing;

[0012] A wire is threaded through the wire hole, with one end electrically connected to the sensor and the other end electrically connected to the control box.

[0013] In some embodiments, the electrical control box is connected to the first side panel.

[0014] In some embodiments, the housing further includes a second side plate located on one side of the first side plate and arranged intersecting with the first side plate, and the electrical control box is connected to the second side plate.

[0015] In some embodiments, the electrical control box is connected to the first side panel, the electrical control box includes a terminal block, the wires pass through the terminal block, and the terminal block is located on the side of the electrical control box facing the wire hole.

[0016] In some embodiments, the housing further includes a second side plate located on one side of the first side plate and arranged intersecting the first side plate, the electrical control box being connected to the second side plate; and the electrical control box including a terminal block through which the wires pass, the terminal block being located on the side of the electrical control box facing the first side plate.

[0017] In some embodiments, the first side plate includes a first plate and a second plate connected to each other, the external connector is disposed in the first plate, and the wire hole is disposed in the second plate.

[0018] In some embodiments, the first side plate includes a first plate and a second plate connected to each other, the external connector passing through the first plate and the sensor connected to the second plate.

[0019] In some embodiments, the coil unit further includes a first drip tray disposed on one side of the receiving cavity along a first direction to collect condensate falling from the outer wall of the heat exchange assembly along the first direction; and, along the first direction, the second plate is located on the side close to the first drip tray.

[0020] In some embodiments, the coil unit further includes a second water collection tray disposed on one side of the heat exchange assembly along a second direction to collect condensate falling from the outer wall of the heat exchange assembly along the second direction; and, along the second direction, the second plate is located on the side close to the second water collection tray.

[0021] In some embodiments, the second plate is detachably connected to the first plate, the first plate includes a first connecting side connecting to the second plate, the second plate includes a second connecting side connecting to the first plate, the first connecting side and the second connecting side are stacked; and the first connecting side is located on the side of the second connecting side facing the heat exchange assembly.

[0022] In some embodiments, the second connection side is located on the side of the first connection side facing the heat exchange assembly.

[0023] In some embodiments, the second connection side is located on the side of the first connection side facing the heat exchange assembly, and the coil unit further includes a first connector and a second connector, the first connector connecting the second connection side and the sensor, and the second connector connecting the first connection side, the second connection side and the sensor respectively.

[0024] In some embodiments, the first connecting side is provided with a first clearance hole, and the first connector extends at least partially into the first clearance hole.

[0025] In some embodiments, the sensing component further includes a mounting bracket connected to the first side plate, and the sensor is connected to the mounting bracket.

[0026] In some embodiments, the sensor is connected to the side of the mounting bracket facing the heat exchange assembly.

[0027] In some embodiments, the sensor includes a detection port adapted to conduct refrigerant, the detection port being disposed away from the mounting bracket.

[0028] In some embodiments, the mounting bracket includes a first baffle disposed above the sensor.

[0029] In some embodiments, the fixing bracket includes a first baffle and a second baffle, the first baffle being disposed on one side of the sensor along a first direction, and the second baffle being disposed on one side of the sensor along a second direction, the first direction intersecting the second direction; the coil unit has a first installation state and a second installation state, in the first installation state the first baffle is located above the sensor, and in the second installation state the second baffle is located above the sensor.

[0030] In some embodiments, the mounting bracket includes a first baffle disposed above the sensor and inclined downwards.

[0031] In any of the embodiments, the first side plate is provided with a first opening, the fixing bracket is detachably connected to the first side plate and the fixing bracket covers the first opening, and the sensor is connected to the side of the fixing bracket facing the receiving cavity;

[0032] The mounting bracket is configured such that, after being removed from the first side plate, the sensor extends out of the receiving cavity through the first opening along with the mounting bracket.

[0033] In some embodiments, the thread hole is connected to the first opening along one side of the axis perpendicular to the first opening.

[0034] In some embodiments, the fixing bracket is provided with a second clearance hole, which is located on the side of the wire hole away from the receiving cavity, and the wire passes through the second clearance hole; the second clearance hole is located on the outer periphery of the fixing bracket and is open on one side.

[0035] In some embodiments, the fixing bracket includes a fixing plate, the fixing plate including an annular stop that connects to the first side plate. When viewed along the axial direction of the first opening, the annular stop is disposed around the outer periphery of the first opening, and the annular stop abuts against the side wall of the first side plate opposite to the receiving cavity.

[0036] In some embodiments, the fixing plate includes a protrusion located inside the annular retaining edge, the protrusion being disposed protruding toward the receiving cavity, and the sensor being connected to the side of the protrusion facing the receiving cavity.

[0037] In some embodiments, the fixing bracket further includes a cover plate connected to the side of the annular flange facing away from the first side plate, and an isolation cavity is formed between the cover plate and the fixing plate. When viewed along the axial direction of the first opening, the sensor at least partially coincides with the isolation cavity.

[0038] In some embodiments, the mounting bracket further includes a heat insulation element that fills at least a portion of the space in the isolation cavity.

[0039] In some embodiments, the fixing bracket includes a heat insulation block and a heat insulation layer, one side of the heat insulation layer is attached to the side wall of the cover plate facing the fixing plate, and the other side is attached to the side wall of the annular flange facing the cover plate. The heat insulation block is disposed between the heat insulation layer and the fixing bracket, or between the heat insulation layer and the cover plate.

[0040] An embodiment of the second aspect of this application also provides an air handling unit including the coil unit of any of the above. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 is a schematic diagram of the overall structure of the coil unit provided in some embodiments of this application in the first installation state;

[0043] Figure 2 is a magnified view of part A in Figure 1;

[0044] Figure 3 is a schematic diagram of the overall structure of the coil unit provided in the first installation state according to some other embodiments of this application;

[0045] Figure 4 is a schematic diagram of the overall structure of the coil unit provided in some embodiments of this application in the second installation state;

[0046] Figure 5 is an exploded view of the overall structure of the coil unit provided in some embodiments of this application in the first installation state;

[0047] Figure 6 is a magnified view of part B in Figure 5;

[0048] Figure 7 is a schematic diagram of the internal structure of the coil unit provided in some embodiments of this application in the first installation state;

[0049] Figure 8 is a cross-sectional view of the overall structure of the coil unit provided in some embodiments of this application;

[0050] Figure 9 is a magnified view of part C in Figure 8;

[0051] Figure 10 is a diagram showing the state of the coil unit provided in some embodiments of this application when the fixing bracket is removed in the first installation state;

[0052] Figure 11 is an exploded view of the overall structure of the fixing bracket in the coil unit provided in some embodiments of this application from a first perspective; and

[0053] Figure 12 is an exploded view of the overall structure of the fixing bracket in the coil unit provided in some embodiments of this application from a second perspective.

[0054] Reference numerals: 10, Coil unit; 100, Housing; 110, Receiving cavity; 120, First side plate; 130, Second side plate; 121, First plate body; 122, Second plate body; 1211, First connecting side; 1212, First clearance hole; 1221, Wiring hole; 1222, Second connecting side; 1223, First opening; 12211, Flexible ring; 200, Heat exchange assembly; 210, Heat exchange pipeline; 220, External connector; 300, Sensing assembly; 310, Sensor; 320, Fixing bracket; 321, First baffle; 322, Second baffle; 323, Fixing plate; 324, Cover plate; 325, Isolation cavity; 326, Heat insulation component; 327, Second clearance hole; 3231, Annular flange; 3232, Protrusion; 3261, Insulation block; 3262, Insulation layer; 400, Electrical control box; 410, Terminal block; 500, Wire; 600, First water receiving tray; 700, Second water receiving tray; 800, First connector; 900, Second connector; 1000, First snap-fit ​​structure; X, First direction; Y, Second direction.

[0055] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0057] In related technologies, the sensor is mounted on the heat exchange assembly of the coil unit. When maintenance is required, the sensor must be removed from the heat exchange assembly inside the coil unit. Similarly, the control box is located inside the coil unit; when maintenance is required, the control box must also be removed from inside the coil unit. These maintenance methods for the sensors and control box are inconvenient for operators, making the maintenance process cumbersome, time-consuming, and labor-intensive.

[0058] Based on this, in order to solve the technical problem that the maintenance fixtures for the electronic components in the existing coil unit 10 are complex, time-consuming and labor-intensive, referring to Figures 1 to 10, some embodiments of this application provide a coil unit 10, which includes a housing 100, a heat exchange assembly 200, a sensing assembly 300, an electrical control box 400 and wires 500.

[0059] The housing 100 is assembled from multiple side plates, which enclose a receiving cavity 110. Electronic components can be disposed within the receiving cavity 110. For example, a heat exchange assembly 200, a sensing assembly 300, or other electronic components can be disposed within the receiving cavity 110. One of the side plates of the housing 100 is a first side plate 120, which has a wiring hole 1221 communicating with the receiving cavity 110. The wires 500 of the electronic components within the receiving cavity 110 can pass through the wiring hole 1221 into or out of the receiving cavity 110, thereby achieving electrical connection of the electronic components using the wires 500.

[0060] The heat exchange assembly 200 is disposed within the receiving cavity 110. The heat exchange assembly 200 includes a heat exchange pipe 210 for transferring refrigerant. An external connector 220 is provided on the side of the heat exchange pipe 210 facing the first side plate 120, and the external connector 220 passes through the first side plate 120. Cooling or heating of the coil unit 10 can be achieved through the evaporation or condensation of refrigerant in the heat exchange pipe 210.

[0061] The sensing component 300 includes a sensor 310, which senses the concentration of refrigerant in its surroundings to determine if there is a refrigerant leak. When the sensor 310 detects that the concentration of refrigerant in its surroundings is higher than a preset value, it generates a sensing signal. The electrical control box 400 of the coil unit 10 receives the sensing signal and performs corresponding alarm processing. The sensor 310 is located inside the receiving cavity 110 and connected to the first side plate 120. Since the heat exchange pipe 210 has an external connector 220 facing the first side plate 120, and refrigerant leaks are more likely to occur at the connector of the heat exchange pipe 210, connecting the sensor 310 to the first side plate 120 can improve the sensitivity of the sensor 310 in detecting refrigerant. The sensor 310 can be detachably connected to the first side plate 120 or fixedly connected to the first side plate 120. When the sensor 310 is detachably connected to the first side plate 120, the two can be connected by snap-fit, threaded connection, or magnetic connection. When the sensor 310 is fixedly connected to the first side plate 120, the two can be riveted, welded, or glued. During the disassembly of the first side plate 120, the sensor 310 can extend out of the receiving cavity 110 along with the first side plate 120 to facilitate the inspection and maintenance of the sensor 310.

[0062] The control box 400 is located outside the receiving cavity 110 and connected to the housing 100. Operators can inspect the control box 400 from outside the coil unit 10 without entering the coil unit 10 or first removing it from the coil unit 10 for inspection. Furthermore, placing the control box 400 outside the receiving cavity 110 facilitates heat dissipation. The control box 400 can be detachably connected to the housing 100 or fixedly connected to it. When detachably connected, the two can be connected by snap-fit, threaded connection, or magnetic connection. When fixedly connected, they can be riveted, welded, or glued.

[0063] The sensor 310 and the control box 400 are connected by a wire 500. One end of the wire 500 is inserted through the wire hole 1221. The part of the wire 500 located inside the receiving cavity 110 is electrically connected to the sensor 310 inside the receiving cavity 110, and the part of the wire 500 located outside the receiving cavity 110 is electrically connected to the control box 400 outside the receiving cavity 110.

[0064] Specifically, in this embodiment, when it is necessary to inspect the sensor 310 in the receiving cavity 110, the first side plate 120 is removed from the housing 100 (when the first side plate 120 is a single complete plate, the first side plate 120 is removed entirely; when the first side plate 120 includes multiple plates, only the plate connected to the sensor 310 can be removed). The operator can move the first side plate 120 away from the receiving cavity 110. Since the sensor 310 is connected to the first side plate 120, the sensor 310 can be brought out of the receiving cavity 110 during the movement of the first side plate 120 away from the receiving cavity 110, thereby facilitating the inspection of the sensor 310. Furthermore, the wire 500 connected to the sensor 310 passes through the wire hole 1221 of the first side plate 120, allowing the wire 500 to move synchronously with the first side plate 120 during disassembly. The operator can observe the pulling state of the wire 500 in real time, eliminating the need to worry about breaking the wire 500 during disassembly and making the disassembly process more convenient. After the sensor 310 is repaired, it is first reconnected to the first side plate 120. Then, the operator can move the first side plate 120 towards the receiving cavity 110, with the side of the first side plate 120 connected to the sensor 310 facing the receiving cavity 110. Once the first side plate 120 is connected to the housing 100, the sensor 310 will be placed back into the receiving cavity 110, allowing real-time monitoring of the refrigerant concentration within the receiving cavity 110. Furthermore, the wire 500 connected to the sensor 310 passes through the wire hole 1221 of the first side plate 120, allowing the wire 500 to move synchronously with the first side plate 120, thereby preventing the wire 500 from interfering with the installation of the sensor 310. In addition, operators can directly inspect and maintain the electrical control box 400 from the outside of the coil unit 10, which is simple, direct, time-saving, and efficient.

[0065] In some embodiments, referring to FIG3, the electrical control box 400 is connected to the first side plate 120.

[0066] Specifically, in this embodiment, since the first side plate 120 is connected to the sensor 310 and has a wire hole 1221 for the sensor 310 wire 500 to pass through, connecting the control box 400 to the first side plate 120 can shorten the distance between the control box 400 and the sensor 310. When connecting the sensor 310 and the control box 400 using the wire 500, since the distance between the sensor 310 and the control box 400 is relatively short, the required length of the wire 500 is shorter, which helps to simplify the wiring method of the wire 500 and ensure the structural regularity of the coil unit 10.

[0067] Alternatively, in other embodiments, referring to Figures 1, 4, 5, 7, 8 and 10, the housing 100 further includes a second side plate 130, which is located on one side of the first side plate 120 and is arranged intersecting with the first side plate 120, and the electrical control box 400 is connected to the second side plate 130.

[0068] Specifically, in this embodiment, since the sensor 310 is connected to the first side plate 120, when the sensor 310 is removed from the housing 100 to move the first side plate 120 out of the receiving cavity 110, if the control box 400 is also connected to the first side plate 120, the control box 400 will move with the first side plate 120. Since the control box 400 is also connected to the wires 500 of other electronic components, if the control box 400 is disassembled together with the first side plate 120, the wires 500 of other electronic components connected to the control box 400 need to be disconnected first, making it inconvenient to disassemble the control box 400. The control box 400 is connected to the second side plate 130, which is arranged adjacent to and intersecting with the first side plate 120. When the first side plate 120 is removed from the housing 100, the control box 400 can still be connected to the second side plate 130. Connecting the control box 400 to the second side plate 130 increases the distance between the control box 400 and the sensor 310. When connecting the sensor 310 and the control box 400 using the wire 500, since the distance between the sensor 310 and the control box 400 is relatively large, the required length of the wire 500 is relatively long. This helps to ensure that the wire 500 has sufficient length margin, so that when the sensor 310 is removed for maintenance, the wire 500 will not be too short and easily jammed (because the wire 500 is generally inelastic), which would cause the wire 500 to interfere with the movement of the sensor 310, making it difficult to remove the sensor 310 from the receiving cavity 110.

[0069] In some embodiments, referring to FIG3, the electrical control box 400 is connected to the first side plate 120. The electrical control box 400 includes a terminal block 410, through which wires 500 pass. The terminal block 410 is located on the side of the electrical control box 400 facing the wire hole 1221.

[0070] Specifically, in this embodiment, when the sensor 310 and the control box 400 are connected by the wire 500, the wire 500 will pass through the terminal block 410 with the shortest routing path, without having to go around the circumference of the control box 400. This facilitates the electrical connection of the sensor 310 and the control box 400 with a shorter wire 500 and prevents the wire 500 from becoming loose.

[0071] Alternatively, in other embodiments, referring to Figures 1, 4, 5, 7, 8 and 10, the housing 100 further includes a second side plate 130, which is located on one side of the first side plate 120 and is arranged intersecting the first side plate 120. The electrical control box 400 is connected to the second side plate 130. The electrical control box 400 includes a terminal block 410, through which wires 500 pass. The terminal block 410 is located on the side of the electrical control box 400 facing the first side plate 120.

[0072] Specifically, in this embodiment, by adopting the above structure, it is possible to avoid the wire 500 connecting the sensor 310 and the control box 400 being too long, which would cause the wire 500 to become loose and affect the overall aesthetics of the coil unit 10.

[0073] Furthermore, the terminal block 410 is provided with pre-made holes, which are easy-to-cut through holes. When wiring the sensor 310, the corresponding through holes can be cut with pliers to allow the wire 500 to be threaded and connected on the terminal block 410.

[0074] In some embodiments, when viewed along the axial direction of the wire hole 1221, the sensor 310 at least partially overlaps with the heat exchange assembly 200, that is, the sensor 310 is positioned close to the heat exchange assembly 200.

[0075] Specifically, in this embodiment, since refrigerant typically leaks from the pipe connections of the heat exchange assembly 200, placing the sensor 310 close to the heat exchange assembly 200 improves the accuracy and timeliness of the sensor 310's refrigerant monitoring, ensuring that the sensor 310 can respond immediately after a refrigerant leak. Simultaneously, spatially overlapping the sensor 310 with the heat exchange assembly 200 facilitates efficient use of the space within the housing cavity 110, thereby reducing the overall volume of the coil unit 10.

[0076] In some embodiments, referring to Figures 1, 3, 4, and 5, the first side plate 120 includes a first plate 121 and a second plate 122 connected to each other. An external connector 220 passes through the first plate 121, and a wire hole 1221 is provided in the second plate 122. The connecting edge of the first plate 121 may be provided with a first connecting hole, and the connecting edge of the second plate 122 may be provided with a second connecting hole. The second plate 122 can be detachably connected to the first plate 121 by bolts sequentially passing through the second connecting hole and the first connecting hole. Alternatively, the connecting edge of the first plate 121 may be provided with a first snap-fit ​​portion, and the connecting edge of the second plate 122 may be provided with a second snap-fit ​​portion. The second plate 122 can be detachably connected to the first plate 121 by the snap-fit ​​engagement between the second snap-fit ​​portion and the first snap-fit ​​portion. For example, if the first snap-fit ​​portion is a snap-fit ​​protrusion, then the second snap-fit ​​portion is a snap-fit ​​groove. If the first snap-fit ​​part is a snap-fit ​​groove, then the second snap-fit ​​part is a snap-fit ​​protrusion. Alternatively, the connecting edge of the first plate 121 may be provided with a first magnetic attraction part, and the connecting edge of the second plate 122 may be provided with a second magnetic attraction part. Through the magnetic attraction between the second magnetic attraction part and the first magnetic attraction part, the second plate 122 can be detachably connected to the first plate 121.

[0077] Specifically, in this embodiment, when inspecting and disassembling the sensor 310, the first plate 121 or the second plate 122 can be removed separately from the housing 100 without removing the entire first side plate 120 from the housing 100. Since the volume of the first plate 121 or the second plate 122 is necessarily smaller than the volume of the first side plate 120, it is easier for the operator to hold the first plate 121 or the second plate 122 (with one hand), thereby reducing the difficulty of inspecting and disassembling the sensor 310 and helping to ensure the safety of the operator during inspection.

[0078] Since the external connector 220 is connected to the heat exchange pipe 210 of the heat exchange assembly 200, and it is inconvenient to disassemble the heat exchange assembly 200 after it is installed in the receiving cavity 110, it is also inconvenient to disassemble the external connector 220 when servicing the sensor 310. Therefore, the external connector 220 and the wire hole 1221 are placed on two different plates, that is, the external connector 220 is placed on the first plate 121 and the wire hole 1221 is placed on the second plate 122. When servicing the sensor 310, only the second plate 122 needs to be disassembled. At this time, it is convenient for the operator to put their hand into the receiving cavity 110 to disassemble the sensor 310 (in this operating state, the sensor 310 is connected to the first plate 121), or to use the second plate 122 to bring the sensor 310 out of the receiving cavity 110 (in this operating state, the sensor 310 is connected to the second plate 122). Regardless of the operation method described above, when disassembling the second plate 122, the second plate 122 will bring the wire 500 connecting the sensor 310 out of the receiving cavity 110 along with it. This avoids the inconvenience of disassembling the wire 500 when the wire hole 1221 is located on the first plate 121, which would interfere with the disassembly of the sensor 310 (since the first plate 121 is provided with an external connector 220, it is not convenient to disassemble the first plate 121), thus affecting the disassembly efficiency and maintenance difficulty of the sensor 310.

[0079] In some embodiments, referring to FIG5, the first side plate 120 may further include a third plate, the third plate and the first plate 121 being connected to each other, and the external connector 220 passing through the third plate. In this case, the sensor 310 can be connected to the first plate 121 or the second plate 122. With this structure, when adding the connection position of the sensor 310 to the first side plate 120, whether the first plate 121 or the second plate 122 is disassembled, the connection state of the external connector 220 on the third plate will not be affected, thereby facilitating the removal of the sensor 310 from the receiving cavity 110.

[0080] In some embodiments, referring to Figures 1, 3, 4 and 5, the first side plate 120 includes a first plate 121 and a second plate 122 connected to each other, an external connector 220 passing through the first plate 121, and a sensor 310 connected to the second plate 122.

[0081] Specifically, in this embodiment, the external connector 220 and the sensor 310 are disposed on two different plates, that is, the external connector 220 is disposed on the first plate 121 and the sensor 310 is disposed on the second plate 122. This ensures that when the sensor 310 is being repaired, that is, when the second plate 122 is being removed from the housing 100, it will not interfere with the external connector 220 on the first plate 121. This allows the sensor 310 to be removed from the receiving cavity 110 using the second plate 122, thus enabling the sensor 310 to be removed from the receiving cavity 110.

[0082] In some embodiments, the external connector 220 can be pre-connected to a connecting plate to form an external connector 220 assembly. Corresponding to the size of the connecting plate, a through hole communicating with the inside and outside of the housing 100 can be formed on the first plate 121. When assembling the external connector 220 onto the first plate 121, the connecting plate can first be aligned with the through hole, ensuring that the connecting plate covers the through hole, and then the connecting plate can be connected to the first plate 121 by means of threaded connection or welding, thereby realizing the assembly of the external connector 220 onto the first plate 121. Compared with directly connecting the external connector 220 to the first plate 121, the connection method provided in this embodiment makes it easier to assemble and connect the external connector 220 onto the first plate 121 because the connecting plate has a larger operating area. At the same time, the connecting plate can effectively seal the through hole, thereby helping to ensure the sealing of the receiving cavity 110 and preventing heat loss of the heat exchange component 200 inside the receiving cavity 110.

[0083] In some embodiments, referring to FIG7, the coil unit 10 further includes a first drip tray 600 disposed on one side of the receiving cavity 110 along the first direction X to collect condensate falling from the outer wall of the heat exchange assembly 200 along the first direction X. Along the first direction X, the second plate 122 is located on the side close to the first drip tray 600. Exemplarily, for example, after the coil unit 10 is placed, the first direction X can be a direction from the upper end of the coil unit 10 to the lower end of the coil unit 10.

[0084] Specifically, in this embodiment, when the heat exchange component 200 is working, water vapor in the air condenses into small droplets upon contact with the heat exchange component 200. These droplets then aggregate to form streams of condensate. Under the influence of gravity, the condensate falls along the first direction X. Simultaneously, a first water collection tray 600 is provided in the receiving cavity 110 along the first direction X. The falling condensate drips precisely into the first water collection tray 600, which collects the condensate and prevents it from flowing around in the receiving cavity 110, thus avoiding damage or short circuits to the electronic components within the receiving cavity 110 and ensuring the safety of the coil unit 10.

[0085] Since the density of refrigerant is greater than that of air, when refrigerant leaks, it will settle towards the first water tray 600. Therefore, placing the second plate 122 on the side closer to the first water tray 600, and placing the sensor 310 on the side closer to the first water tray 600 (because the sensor 310 is placed on the side closer to the second plate 122), helps to improve the sensitivity of the sensor 310 in detecting refrigerant and ensures the safety of the coil unit 10 in use.

[0086] In some embodiments, referring to FIG7, the coil unit 10 further includes a second drip tray 700, which is disposed on one side of the heat exchange assembly 200 along the second direction Y to collect condensate falling from the outer wall of the heat exchange assembly 200 along the second direction Y. Along the second direction Y, the second plate 122 is located on the side close to the second drip tray 700. Exemplarily, for example, after the coil unit 10 is placed, the second direction Y can be a direction from the upper end of the coil unit 10 to the lower end of the coil unit 10.

[0087] Specifically, in this embodiment, to make the coil unit 10 suitable for different installation spaces and improve its applicability to various installation scenarios, the coil unit 10 can have at least two installation methods: a first installation state and a second installation state. For example, in the first installation state, the coil unit 10 can be installed along its length (i.e., vertically). In this case, the coil unit 10 occupies less horizontal space and more vertical space. Therefore, the first installation state of the coil unit 10 is suitable for installation scenarios with limited horizontal space and large vertical space. In the second installation state, the coil unit 10 can be installed along its width (i.e., horizontally). In this case, the coil unit 10 occupies more horizontal space and less vertical space. Therefore, the second installation state of the coil unit 10 is suitable for installation scenarios with large horizontal space and small vertical space.

[0088] Corresponding to the first installation state of the coil unit 10, a first drip tray 600 is provided inside the coil unit 10, so that in the first installation state, the condensate in the coil unit 10 can drip into the first drip tray 600 due to gravity, thereby achieving the collection of condensate in the coil unit 10. Corresponding to the second installation state of the coil unit 10, a second drip tray 700 is provided inside the coil unit 10, so that in the second installation state, the condensate in the coil unit 10 can drip into the second drip tray 700 due to gravity, thereby achieving the collection of condensate in the coil unit 10.

[0089] Referring to the above embodiment, when the heat exchange component 200 is working, water vapor in the air will condense into small droplets after contacting the heat exchange component 200. After the small droplets accumulate, they will form streams of condensate. Under the action of gravity, the condensate will fall along the second direction Y. At the same time, a second water receiving tray 700 is provided in the receiving cavity 110 along the second direction Y. At this time, the falling condensate will drip into the second water receiving tray 700. The second water receiving tray 700 will collect the condensate, thereby preventing the condensate from flowing around in the receiving cavity 110 and causing damage or short circuit to the electronic components in the receiving cavity 110, thus ensuring the safety of the coil unit 10.

[0090] Since the refrigerant is denser than air, when a refrigerant leaks, it will settle towards the second drip tray 700. Therefore, placing the second plate 122 near the second drip tray 700, and placing the sensor 310 near the second drip tray 700 (because the sensor 310 is placed near the second plate 122), helps to improve the sensitivity of the sensor 310 in detecting refrigerant and ensures the safety of the coil unit 10.

[0091] In some embodiments, referring to Figures 8 and 9, the second plate 122 is detachably connected to the first plate 121. The first plate 121 includes a first connecting side 1211 connecting to the second plate 122, and the second plate 122 includes a second connecting side 1222 connecting to the first plate 121. The first connecting side 1211 and the second connecting side 1222 are stacked. The first connecting side 1211 is located on the side of the second connecting side 1222 facing the heat exchange assembly 200; or, the second connecting side 1222 is located on the side of the first connecting side 1211 facing the heat exchange assembly 200.

[0092] Specifically, in this embodiment, the second plate 122 and the first plate 121 can be detachably connected by bolts, or the second plate 122 and the first plate 121 can be detachably connected by a magnetic attraction part (e.g., a magnet). Stacking the first connecting side 1211 of the first plate 121 and the second connecting side 1222 of the second plate 122 increases the connection area between the first plate 121 and the second plate 122, thereby improving the connection stability between them. Taking the detachable connection of the second plate 122 and the first plate 121 by bolts as an example, the first connecting side 1211 can have a first threaded hole, and the second connecting side 1222 can have a second threaded hole. The bolt passes through the first threaded hole and the second threaded hole in sequence to achieve a stable connection between the first plate 121 and the second plate 122. On the other hand, it helps to reduce the machining accuracy of the first plate 121 and the second plate 122. Since the first plate 121 will have a through hole to accommodate the second plate 122, and the size of the second plate 122 will be slightly larger than the opening area of ​​the through hole, when the second plate 122 is connected to the first plate 121 and the through hole is blocked by the second plate 122, it is not necessary to ensure that the second connecting side 1222 is tightly fitted to the first connecting side 1211. That is, it is not necessary to ensure that the second plate 122 and the first plate 121 fit together perfectly. This helps to reduce the fitting accuracy of the second plate 122 and the first plate 121, and also reduces the installation difficulty of the second plate 122 on the first plate 121.

[0093] In some embodiments, referring to Figures 8 and 9, the second plate 122 can be connected to the side of the first plate 121 facing away from the heat exchange assembly 200 (i.e., the second plate 122 is connected to the outer wall of the first plate 121), or the second plate 122 can be connected to the side of the first plate 121 facing the heat exchange assembly 200 (i.e., the second plate 122 is connected to the inner wall of the first plate 121). Compared to connecting the second plate 122 to the inner wall of the first plate 121, connecting the second plate 122 to the outer wall of the first plate 121 is easier for operators to assemble.

[0094] In some embodiments, referring to Figures 2 and 9, the second connecting side 1222 is located on the side of the first connecting side 1211 facing the heat exchange assembly 200. The coil unit 10 further includes a first connector 800 and a second connector 900. The first connector 800 connects the second connecting side 1222 and the sensor 310, and the second connector 900 connects the first connecting side 1211, the second connecting side 1222, and the sensor 310. For example, the first connector 800 and the second connector 900 can both be connecting bolts.

[0095] Specifically, in this embodiment, when installing the sensor 310 and the second plate 122, the sensor 310 and the second plate 122 can be assembled outside the coil unit 10 first. That is, the sensor 310 is first connected to the second plate 122 using the first connector 800 to achieve the pre-positioning of the sensor 310 in the second plate 122. Then, the assembly formed by the sensor 310 and the second plate 122 is placed together in the receiving cavity 110, and the second connecting side 1222 of the second plate 122 and the first connecting side 1211 of the first plate 121 are stacked. Finally, the assembly formed by the sensor 310 and the second plate 122 is connected to the first plate 121 using the second connector 900 to achieve the positioning connection of the assembly formed by the sensor 310 and the second plate 122 in the first plate 121.

[0096] By adopting the above connection method, on the one hand, the sensor 310 can be connected to the second plate 122 from the outside of the coil unit 10 without blind operation of the sensor 310, which is beneficial to the assembly between the sensor 310 and the second plate 122. On the other hand, only two connectors (i.e., the first connector 800 and the second connector 900) are needed to connect the sensor 310 to the second plate 122 and the second plate 122 to the first plate 121, which simplifies the overall connection structure of the sensor 310 to the second plate 122 and the second plate 122 to the first plate 121, thereby improving the overall assembly efficiency of the sensor 310 to the second plate 122 and the second plate 122 to the first plate 121, and reducing the overall assembly difficulty of the sensor 310 to the second plate 122 and the second plate 122 to the first plate 121.

[0097] In some embodiments, referring to Figures 2 and 9, the first connecting side 1211 is provided with a first clearance hole 1212, and the first connector 800 extends at least partially into the first clearance hole 1212.

[0098] Specifically, in this embodiment, since the first connector 800 only connects the second connecting side 1222 and the sensor 310, an abutment gap will be formed between the first connector 800 and the first connecting side 1211. In order to eliminate the abutment gap between the first connector 800 and the first connecting side 1211, the first connecting side 1211 is provided with a first clearance hole 1212. The first clearance hole 1212 is used to accommodate the end head of the first connector 800, thereby improving the fit between the second connecting side 1222 and the first connecting side 1211, ensuring the sealing of the receiving cavity 110, and preventing excessive heat from the receiving cavity 110 from spreading to the outside of the coil unit 10.

[0099] In some embodiments, referring to Figures 5 and 6, the sensing assembly 300 further includes a fixing bracket 320, which is connected to the first side plate 120 (specifically, the fixing bracket 320 can be connected to the second plate 122), and the sensor 310 is connected to the fixing bracket 320. The fixing bracket 320 can be made of stainless steel.

[0100] Specifically, in this embodiment, the fixing bracket 320 can be a semi-enclosed structure, forming an open cavity in which the sensor 310 can be disposed. The fixing bracket 320 adopts this structure to prevent condensate (which forms on the outer wall of the heat exchange pipe 210 of the heat exchange assembly 200 within the cavity 110) from dripping onto the sensor 310, thus avoiding damage to the sensor 310. Furthermore, when refrigerant leaks from the heat exchange pipe 210, the refrigerant can flow through the opening to the sensor 310, ensuring that the sensor 310 can accurately and promptly detect the leaking refrigerant and transmit the corresponding sensing signal to the control box 400, enabling the control box 400 to issue an alarm in a timely manner.

[0101] In some embodiments, referring to Figures 5 and 6, the sensor 310 is connected to the side of the mounting bracket 320 facing the heat exchange assembly 200.

[0102] Specifically, in this embodiment, the sensor 310 is positioned on the side close to the heat exchange assembly 200. Once the refrigerant in the heat exchange assembly 200 leaks, it will immediately flow towards the sensor 310, thereby improving the sensor 310's sensitivity to refrigerant detection.

[0103] In some embodiments, the sensor 310 includes a detection port adapted to conduct refrigerant, the detection port being disposed away from the fixed bracket 320.

[0104] Specifically, in this embodiment, when refrigerant leaks within the heat exchange assembly 200, it flows to the detection port of the sensor 310. Upon detecting the leaking refrigerant, the sensor 310 activates an alarm in the control box 400 to alert the user and prevent property damage. Positioning the detection port away from the mounting bracket 320, exposing it within the receiving cavity 110, prevents the mounting bracket 320 from obstructing the detection port, thereby improving the sensor 310's sensitivity to leaking refrigerant.

[0105] In some embodiments, referring to FIG6, the fixing bracket 320 includes a first baffle 321, which is disposed above the sensor 310. The first baffle 321 can prevent condensate in the receiving cavity 110 from dripping onto the sensor 310, thereby preventing damage to the sensor 310.

[0106] Alternatively, in some embodiments, referring to FIG6, the fixing bracket 320 includes a first baffle 321 and a second baffle 322. The first baffle 321 is disposed on one side of the sensor 310 along the first direction X, and the second baffle 322 is disposed on one side of the sensor 310 along the second direction Y. The first direction X and the second direction Y intersect. For example, the first direction X can be the longitudinal direction of the coil unit 10, and the second direction Y can be the transverse direction of the coil unit 10. The coil unit 10 has a first installation state and a second installation state. In the first installation state, the first baffle 321 is located above the sensor 310, and in the second installation state, the second baffle 322 is located above the sensor 310. The arrangement of the first baffle 321 and the second baffle 322 can refer to the arrangement of the first water receiving tray 600 and the second water receiving tray 700 in the above embodiments.

[0107] Corresponding to different installation states of the coil unit 10, a baffle is provided above the sensor 310, so that the coil unit 10 can be in the first installation state or the second installation state, and the baffle can be used to prevent condensate from dripping onto the sensor 310.

[0108] Alternatively, in some other embodiments, referring to FIG6, the fixed bracket 320 includes a first baffle 321, which is disposed above the sensor 310 and is inclined downward.

[0109] When condensate drips onto the first baffle 321, because the first baffle 321 is tilted downwards, it will guide the condensate to flow to the first water receiving tray 600 or the second water receiving tray 700, thereby collecting the condensate.

[0110] In some embodiments, referring to Figures 1, 3, and 4, the housing 100 has a first snap-fit ​​structure 1000 on its outer wall opposite to the receiving cavity 110. The first snap-fit ​​structure 1000 can be bolted to the outer wall of the housing 100, and the portion of the wire 500 extending out of the receiving cavity 110 is snapped into the first snap-fit ​​structure 1000. And / or, the housing 100 has a second snap-fit ​​structure (not shown in the figures, but can be referenced to the first snap-fit ​​structure 1000 in the figures) facing the inner wall of the receiving cavity 110. The second snap-fit ​​structure can be bolted to the inner wall of the housing 100, and the portion of the wire 500 located within the receiving cavity 110 is snapped into the second snap-fit ​​structure. Both the first snap-fit ​​structure 1000 and the second snap-fit ​​structure can be fixed clips, or both can be fixed coils.

[0111] Specifically, in this embodiment, the first snap-fit ​​structure 1000 positions the portion of the wire 500 extending out of the receiving cavity 110 against the outer wall of the housing 100, so that the portion of the wire 500 extending out of the receiving cavity 110 is in contact with the outer wall of the housing 100. The second snap-fit ​​structure positions the portion of the wire 500 located inside the receiving cavity 110 against the inner wall of the housing 100, so that the portion of the wire 500 located inside the receiving cavity 110 is in contact with the inner wall of the housing 100. By setting the first snap-fit ​​structure 1000 and the second snap-fit ​​structure, it is possible to effectively prevent the wire 500 from shaking (if the wire 500 is prone to shaking, it is easy to cause poor connection between the wire 500 and the sensor 310, or poor connection between the wire 500 and the control box 400), ensuring that the wire 500 is stably connected to the sensor 310 or the control box 400, and preventing poor contact between the sensor 310 and the control box 400. At the same time, the first snap-fit ​​structure 1000 and the second snap-fit ​​structure constrain the wire 500, which can effectively prevent the wire 500 from being messy.

[0112] In some embodiments, referring to Figures 1, 3, and 4, the coil unit 10 further includes a flexible ring 12211, which passes through the wire hole 1221, and the wire 500 passes through the flexible ring 12211. The flexible ring 12211 can be a rubber ring.

[0113] Specifically, in this embodiment, condensate in the receiving cavity 110 may drip onto the wire 500 and flow along the wire 500. Since the wire 500 passes through the flexible ring 12211, the flexible ring 12211 will isolate the part of the wire 500 extending out of the receiving cavity 110 and the part of the wire 500 located in the receiving cavity 110. When the condensate flows along the wire 500 to the flexible ring 12211, the flexible ring 12211 will block the condensate from continuing to flow along the wire 500, thereby preventing the condensate from flowing along the wire 500 to the electrical control box 400 and causing a short circuit in the electrical control box 400.

[0114] In some embodiments, the surface of the flexible ring 12211 may be provided with absorbent cotton, which is used to absorb condensation at the flexible ring 12211.

[0115] In some embodiments, referring to FIG10, a first side plate 120 is provided with a first opening 1223, a fixing bracket 320 is detachably connected to the first side plate 120 and covers the first opening 1223, and a sensor 310 is connected to the side of the fixing bracket 320 facing the receiving cavity 110. The fixing bracket 320 is configured such that after being detached from the first side plate 120, the sensor 310 extends out of the receiving cavity 110 through the first opening 1223 along with the fixing bracket 320.

[0116] Specifically, in this embodiment, when the sensor 310 is being repaired, only the fixing bracket 320 connecting the sensor 310 needs to be removed; there is no need to remove the entire first side plate 120. Compared to removing the first side plate 120, removing the smaller fixing bracket 320 is more convenient and efficient. Furthermore, since the sensor 310 is connected to the inside of the fixing bracket 320, it can be removed simultaneously after the fixing bracket 320 is removed. Compared to structures where the sensor 310 is connected to the first side plate 120 or mounted on the heat exchange assembly 200, in this solution, removing the fixing bracket 320 eliminates the need to further remove the sensor 310 from the first side plate 120 or the heat exchange assembly 200, thus improving the removal efficiency of the sensor 310. After the sensor 310 is repaired, it can be reconnected to the fixing bracket 320, and the fixing bracket 320 can be reconnected to the first side plate 120, ensuring that the fixing bracket 320 covers the first opening 1223. During the above installation process, the sensor 310 can be installed and fixed outside the housing 100. Compared with the structure in which the operator's hand is inserted into the housing 100 through the first opening 1223 to install the sensor 310, the operation is more convenient for the operator.

[0117] In some embodiments, the wire hole 1221 is connected to the first opening 1223 on one side along the axial direction perpendicular to the first opening 1223.

[0118] Specifically, in this embodiment, the first opening 1223 is used for the sensor 310 to pass through or exit the receiving cavity 110, and the wire hole 1221 is used to accommodate the wire 500 connecting the sensor 310. When the sensor 310 passes through the first opening 1223 into the receiving cavity 110, the wire 500 can pass through the wire hole 1221; when the sensor 310 passes through the first opening 1223 out of the receiving cavity 110, the wire 500 can pass through the wire hole 1221 along with the sensor 310, thereby ensuring that the wire 500 will not affect the disassembly and maintenance of the sensor 310.

[0119] And / or, in some other embodiments, referring to Figures 10 to 12, the fixing bracket 320 is provided with a second clearance hole 327, the second clearance hole 327 is located on the side of the wire hole 1221 away from the receiving cavity 110, and the wire 500 passes through the second clearance hole 327; the second clearance hole 327 is provided on the outer periphery of the fixing bracket 320 and is open on one side.

[0120] Specifically, in this embodiment, when connecting the sensor 310 and the control box 400 using the wire 500, one end of the wire 500 can first be connected to the sensor 310. Then, when the sensor 310 is placed into the receiving cavity 110 through the first opening 1223, the sensor 310 will naturally move the wire 500 into the wire hole 1221 and the second clearance hole 327, thus positioning the wire 500 within these openings. When inspecting or disassembling the sensor 310, it can be directly moved out of the receiving cavity 110 through the first opening 1223. When moving the sensor 310 out of the receiving cavity 110 through the first opening 1223, the sensor 310 will naturally move the wire 500 out of the wire hole 1221 and the second clearance hole 327.

[0121] In some embodiments, referring to Figures 10 to 12, the fixing bracket 320 includes a fixing plate 323, the fixing plate 323 includes an annular baffle 3231 that connects to the first side plate 120. When viewed along the axial direction of the first opening 1223, the annular baffle 3231 is arranged around the outer periphery of the first opening 1223, and the annular baffle 3231 abuts against the side wall of the first side plate 120 away from the receiving cavity 110.

[0122] Specifically, in this embodiment, when the fixing bracket 320 is connected to the first side plate 120, the annular flange 3231 of the fixing plate 323 in the fixing bracket 320 will fit tightly against the surface of the first side plate 120, which is beneficial to completely seal the first opening 1223 by using the fixing bracket 320, thereby improving the sealing of the receiving cavity 110 and preventing heat loss of the heat exchange component 200 in the receiving cavity 110.

[0123] In some embodiments, referring to Figures 11 and 12, bolt holes may be provided on the annular flange 3231, and the fixing bracket 320 can be connected to the first side plate 120 by bolts passing through the bolt holes.

[0124] In some embodiments, referring to Figures 11 and 12, the fixing plate 323 includes a protrusion 3232 located inside the annular retaining edge 3231. The protrusion 3232 is arranged to protrude into the receiving cavity 110, and the sensor 310 is connected to the side of the protrusion 3232 facing the receiving cavity 110.

[0125] Specifically, in this embodiment, the sensor 310 is connected to the protrusion 3232. The thickness of the protrusion 3232 protruding into the receiving cavity 110 allows adjustment of the sensor 310's position within the cavity 110, ensuring that the sensor 310's position corresponds to the connection point of the heat exchange pipe 210 in the heat exchange assembly 200. This improves the sensor 310's sensitivity to refrigerant leakage. (Since refrigerant leakage is more likely to occur at the connection point of the heat exchange pipe 210, adjusting the sensor 310's position within the receiving cavity 110 to correspond to the connection point of the heat exchange pipe 210 improves the sensor 310's sensitivity to refrigerant leakage and ensures the safe operation of the coil unit 10.)

[0126] In some embodiments, the protrusion 3232 can be integrally embedded in the first opening 1223, that is, the outer wall of the protrusion 3232 and the edge of the first opening 1223 are fitted together. With the above structure, the protrusion 3232 can be used to more effectively seal the first opening 1223, thereby reducing the connection gap between the fixing plate 323 and the first opening 1223, preventing leaked refrigerant from flowing out of the housing 100 from the first opening 1223 and affecting the safety of the coil unit 10.

[0127] In some embodiments, referring to Figures 11 and 12, the fixing bracket 320 further includes a cover plate 324, which is connected to the side of the annular flange 3231 facing away from the first side plate 120. An isolation cavity 325 is formed between the cover plate 324 and the fixing plate 323. When viewed along the axial direction of the first opening 1223, the sensor 310 at least partially coincides with the isolation cavity 325. That is, the sensor 310 is disposed on the fixing bracket 320. Since an isolation cavity 325 is provided between the cover plate 324 and the fixed plate 323, and the isolation cavity 325 is filled with air (gas), the heat generated by the heat exchange component 200 in the housing cavity 110 will be transferred to the outside of the housing 100 through the fixed plate 323-isolation cavity 325-cover plate 324 with a low heat conduction efficiency (the heat conduction efficiency at the isolation cavity 325 will be low). This will not easily cause heat loss in the housing cavity 110, thereby improving the heat exchange effect of the heat exchange component 200 and ensuring the cooling or heating effect of the coil unit 10.

[0128] The isolation cavity 325 can be formed in various ways. For example, a protrusion 3232 protruding into the receiving cavity 110 can be provided on the fixing plate 323 to form the isolation cavity 325 between the fixing plate 323 and the cover plate 324. Alternatively, a protrusion 3232 protruding away from the receiving cavity 110 can be provided on the cover plate 324 to form the isolation cavity 325 between the fixing plate 323 and the cover plate 324. Alternatively, a first protrusion 3232 protruding into the receiving cavity 110 can be provided on the fixing plate 323, while a second protrusion 3232 protruding away from the receiving cavity 110 can be provided on the cover plate 324 to form the isolation cavity 325 between the fixing plate 323 and the cover plate 324.

[0129] In some embodiments, referring to Figures 11 and 12, the fixing bracket 320 further includes a heat insulation member 326 that fills at least a portion of the space in the isolation cavity 325. Exemplarily, for example, the heat insulation member 326 may be heat insulation cotton or heat insulation fiberboard.

[0130] Specifically, in this embodiment, by providing a heat insulation component 326 in the isolation cavity 325 of the fixed bracket 320, it is beneficial to improve the heat preservation effect of the shell 100 at the first opening 1223, effectively prevent excessive heat transfer from the receiving cavity 110 to the outside of the shell 100, avoid excessive heat loss in the receiving cavity 110, and ensure the heat exchange effect of the heat exchange component 200 in the receiving cavity 110.

[0131] Alternatively, in other embodiments, referring to Figures 11 and 12, the fixing bracket 320 includes a heat insulation block 3261 and a heat insulation layer 3262. One side of the heat insulation layer 3262 is attached to the sidewall of the cover plate 324 facing the fixing plate 323, and the other side is attached to the sidewall of the annular flange 3231 facing the cover plate 324. The heat insulation block 3261 is disposed between the heat insulation layer 3262 and the fixing bracket 320, or between the heat insulation layer 3262 and the cover plate 324. For example, the heat insulation block 3261 and the heat insulation layer 3262 can be heat insulation cotton, or the heat insulation block 3261 and the heat insulation layer 3262 can also be heat insulation fiberboard.

[0132] Specifically, in this embodiment, by providing a heat insulation layer 3262 and a heat insulation block 3261 between the fixing plate 323 and the cover plate 324, it is beneficial to improve the heat preservation effect of the housing 100 at the first opening 1223, effectively prevent excessive heat transfer from the cavity 110 to the outside of the housing 100, avoid excessive heat loss in the cavity 110, and ensure the heat exchange effect of the heat exchange component 200 in the cavity 110.

[0133] Furthermore, referring to the above embodiments, the location of the heat insulation block 3261 can correspond to the location of the protrusion 3232. For example, if a protrusion 3232 protruding into the receiving cavity 110 is provided on the fixing plate 323, then the heat insulation block 3261 can be placed between the heat insulation layer 3262 and the fixing plate 323; if a protrusion 3232 protruding away from the receiving cavity 110 is provided on the cover plate 324, then the heat insulation block can be placed between the heat insulation layer 3262 and the fixing plate 323. 3261 is disposed between the heat insulation layer 3262 and the cover plate 324; if the fixing plate 323 is provided with a first protrusion 3232 protruding into the receiving cavity 110, and the cover plate 324 is provided with a second protrusion 3232 protruding away from the receiving cavity 110, then the heat insulation block 3261 can be disposed both between the heat insulation layer 3262 and the fixing plate 323, and also between the heat insulation layer 3262 and the cover plate 324.

[0134] This application also provides an air handling unit, which includes the coil unit 10 in any of the above embodiments. The air handling unit may also include other units besides the coil unit 10. For example, the air handling unit may also include an air supply unit, which, when connected to the coil unit, supplies air to the coil unit 10. In some embodiments, the air supply unit may be connected above the coil unit 10 (as shown in Figure 1, the orientation of the coil unit 10) and blows air upwards, so that external air is drawn into the coil unit 10 from below. In other embodiments, the air supply unit may be connected below the coil unit 10 (as shown in Figure 1, the orientation of the coil unit 10) and blows air upwards, so that air is blown into the coil unit 10.

[0135] It should be noted that if the embodiments of this application involve directional indications (such as up, down, left, right, front, back, etc.), these directional indications are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. When a direction reference is introduced in a specific embodiment, unless the direction is specifically limited to unidirectional, it can be unidirectional or bidirectional (two parallel and opposite directions). Whether it is unidirectional or bidirectional depends on what those skilled in the art can achieve. When the direction reference is bidirectional, it should be considered that two parallel and different embodiments have been introduced simultaneously.

[0136] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0137] The above are merely some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A coil unit, including: The housing has an internal cavity, and the housing includes a first side plate with a through hole communicating with the cavity. A heat exchange assembly is disposed within the receiving cavity. The heat exchange assembly includes a heat exchange pipeline for transmitting refrigerant. An external connector is provided on the side of the heat exchange pipeline facing the first side plate, and the external connector passes through the first side plate. The sensing component includes a sensor for sensing the refrigerant around itself, the sensor being disposed in the receiving cavity and connected to the first side plate; An electrical control box is located outside the receiving cavity and connected to the housing; as well as A wire is threaded through the wire hole, with one end electrically connected to the sensor and the other end electrically connected to the control box.

2. The coil unit as described in claim 1, wherein, The electrical control box is connected to the first side panel; or The housing also includes a second side plate, which is located on one side of the first side plate and is arranged intersecting with the first side plate. The electrical control box is connected to the second side plate.

3. The coil unit as described in claim 1, wherein, The electrical control box is connected to the first side panel. The electrical control box includes a terminal block, through which the wires pass. The terminal block is located on the side of the electrical control box facing the wire hole; or The housing further includes a second side plate, which is located on one side of the first side plate and is arranged intersecting with the first side plate. The electrical control box is connected to the second side plate. The electrical control box includes a terminal block, through which the wires pass. The terminal block is located on the side of the electrical control box facing the first side plate.

4. The coil unit as described in any one of claims 1 to 3, wherein, The first side plate includes a first plate and a second plate connected to each other, the external connector is disposed in the first plate, and the wire hole is disposed in the second plate.

5. The coil unit as described in any one of claims 1 to 4, wherein, The first side plate includes a first plate and a second plate that are connected to each other. The external connector passes through the first plate and the sensor is connected to the second plate.

6. The coil unit as described in claim 5 further includes a first water receiving tray, wherein, The first water receiving tray is disposed on one side of the receiving cavity along the first direction to collect condensate falling from the outer wall of the heat exchange assembly along the first direction; as well as Along the first direction, the second plate is located on the side close to the first water receiving tray.

7. The coil unit as described in claim 6 further includes a second water receiving tray, wherein, The second water receiving tray is disposed on one side of the heat exchange component along the second direction to collect condensate falling from the outer wall of the heat exchange component along the second direction; as well as Along the second direction, the second plate is located on the side closer to the second water receiving tray.

8. The coil unit as described in any one of claims 5 to 7, wherein, The second plate is detachably connected to the first plate. The first plate includes a first connecting side connecting to the second plate, and the second plate includes a second connecting side connecting to the first plate. The first connecting side and the second connecting side are stacked. The first connection side is located on the side of the second connection side facing the heat exchange component, or the second connection side is located on the side of the first connection side facing the heat exchange component.

9. The coil unit as claimed in claim 8, wherein, The second connection side is located on the side of the first connection side facing the heat exchange assembly. The coil unit also includes a first connector and a second connector. The first connector connects the second connection side and the sensor, and the second connector connects the first connection side, the second connection side, and the sensor respectively.

10. The coil unit as claimed in claim 9, wherein, The first connecting side is provided with a first clearance hole, and the first connecting member extends at least partially into the first clearance hole.

11. The coil unit as claimed in any one of claims 1 to 10, wherein, The sensing component also includes a fixed bracket, which is connected to the first side plate, and the sensor is connected to the fixed bracket.

12. The coil unit as claimed in claim 11, wherein, The sensor is connected to the side of the fixed bracket facing the heat exchange assembly; and / or The sensor includes a detection port adapted to conduct refrigerant, the detection port being disposed away from the fixed bracket.

13. The coil unit as claimed in claim 11 or 12, wherein, The fixed bracket includes a first baffle, which is disposed above the sensor; or The fixing bracket includes a first baffle and a second baffle. The first baffle is disposed on one side of the sensor along a first direction, and the second baffle is disposed on one side of the sensor along a second direction, the first direction intersecting the second direction. The coil unit has a first installation state and a second installation state. In the first installation state, the first baffle is located above the sensor; in the second installation state, the second baffle is located above the sensor. The fixed bracket includes a first baffle, which is disposed above the sensor and is inclined downwards.

14. The coil unit as claimed in any one of claims 11 to 13, wherein, The first side plate has a first opening, the fixing bracket is detachably connected to the first side plate and covers the first opening, and the sensor is connected to the side of the fixing bracket facing the receiving cavity; and The mounting bracket is configured such that, after being removed from the first side plate, the sensor extends out of the receiving cavity through the first opening along with the mounting bracket.

15. The coil unit as claimed in claim 14, wherein, The threaded hole is connected to the first opening on one side perpendicular to the axis of the first opening; and / or The fixed bracket is provided with a second clearance hole, which is located on the side of the wire hole away from the receiving cavity, and the wire passes through the second clearance hole; the second clearance hole is located on the outer periphery of the fixed bracket and is open on one side.

16. The coil unit as claimed in claim 14 or 15, wherein, The fixed bracket includes a fixed plate, which includes an annular baffle connecting the first side plate. When viewed along the axial direction of the first opening, the annular baffle is arranged around the outer periphery of the first opening and abuts against the side wall of the first side plate away from the receiving cavity.

17. The coil unit as claimed in claim 16, wherein, The fixing plate includes a protrusion located inside the annular retaining edge, the protrusion protruding towards the receiving cavity, and the sensor is connected to the side of the protrusion facing the receiving cavity.

18. The coil unit as claimed in claim 17, wherein, The fixed bracket also includes a cover plate, which is connected to the side of the annular baffle away from the first side plate. An isolation cavity is formed between the cover plate and the fixed plate. When viewed along the axial direction of the first opening, the sensor at least partially coincides with the isolation cavity.

19. The coil unit as claimed in claim 18, wherein, The fixing bracket further includes a heat insulation element that fills at least a portion of the space in the isolation cavity; or The fixed bracket includes a heat insulation block and a heat insulation layer. One side of the heat insulation layer is attached to the side wall of the cover plate facing the fixed plate, and the other side is attached to the side wall of the annular flange facing the cover plate. The heat insulation block is disposed between the heat insulation layer and the fixed bracket, or between the heat insulation layer and the cover plate.

20. An air handling unit, comprising the coil unit as described in any one of claims 1-19.

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