Air handling unit

Abstract

The invention discloses an air handling unit which comprises a heat exchanger, a first water pan, a second water pan and a sensor. The first water pan is arranged on one side, in the first direction, of the heat exchanger and located below the heat exchanger when the air handling unit is vertically placed in the first direction so as to be used for containing condensate water dripping from the heat exchanger. The second water pan is arranged on one side, in the second direction, of the heat exchanger and located below the heat exchanger when the air handling unit is vertically placed in the second direction so as to be used for containing condensate water dripping from the heat exchanger, and the first direction is perpendicular to the second direction. The sensor is used for detecting refrigerant leaked from the heat exchanger. The sensor is located on the side, close to the first water pan, of the heat exchanger in the first direction and located on the side, close to the second water pan, of the heat exchanger in the second direction. According to the air handling unit, the reliability of refrigerant monitoring can be effectively improved, related personnel can conveniently handle the refrigerant leakage condition in time, and continuous and normal operation of the air handling unit is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air handling unit. Background Art

[0002] When the air conditioner is running or in standby mode, the heat exchanger may leak refrigerant due to the influence of sealing. Refrigerant leakage will reduce the heat exchange efficiency of the air conditioner and easily cause safety hazards. Therefore, a refrigerant sensor needs to be installed on the air conditioner to monitor whether the refrigerant leaks, so that relevant personnel can deal with the leakage in time, ensure that the air conditioner can continue to operate normally, and eliminate safety hazards. Air conditioners include vertical air conditioners and horizontal air conditioners.

[0003] In the related art, for different types of air conditioners, due to the uncertainty of the specific location of the refrigerant leakage point and the diversity of air conditioner installation methods, the relevant setting position of the refrigerant sensor is uncertain, and is only based on the normal layout requirements of the internal components of the air conditioner. Therefore, the refrigerant sensor cannot monitor and feedback the refrigerant leakage at different positions in the heat exchanger in a timely and accurate manner, and the reliability of refrigerant monitoring is poor. Summary of the invention

[0004] The main purpose of the present invention is to provide an air handling unit, aiming to solve the technical problem of poor reliability of refrigerant monitoring.

[0005] To achieve the above object, an embodiment of the present invention provides an air handling unit, the air handling unit comprising:

[0006] Heat exchanger;

[0007] a first water receiving tray, disposed on one side of the heat exchanger along the first direction, and located below the heat exchanger when the air handling unit is placed vertically along the first direction, for containing condensed water dripping from the heat exchanger;

[0008] a second water receiving tray, disposed on one side of the heat exchanger along a second direction and located below the heat exchanger when the air handling unit is placed vertically along the second direction, for receiving condensed water dripping from the heat exchanger, the first direction being perpendicular to the second direction;

[0009] A sensor for detecting refrigerant leakage from the heat exchanger;

[0010] Wherein, along the first direction, the sensor is located on a side of the heat exchanger adjacent to the first water receiving tray, and along the second direction, the sensor is located on a side of the heat exchanger adjacent to the second water receiving tray.

[0011] In some embodiments, the heat exchanger includes a coil assembly for conducting a refrigerant, one end of the coil assembly along a third direction is an interface end, and the third direction is perpendicular to the first direction and the second direction;

[0012] Along the third direction, the sensor is adjacent to one side of the interface end of the heat exchanger.

[0013] In some embodiments, the sensor is connected to the heat exchanger, and along the first direction, the sensor is located between the heat exchanger and the first water receiving pan.

[0014] In some embodiments, the heat exchanger includes a guard plate facing the first water receiving tray, a connecting plate is connected to a side of the guard plate adjacent to the interface end, and the sensor is connected to a wall surface of the connecting plate facing away from the guard plate.

[0015] In some embodiments, a side plate of the first water receiving tray along a third direction is a first side plate, the third direction is perpendicular to the first direction and the second direction, and the first side plate is provided with a first drain port;

[0016] Along the third direction, the sensor is adjacent to one side of the first side plate of the first water receiving tray.

[0017] In some embodiments, the heat exchanger includes a coil assembly for conducting a refrigerant, and one end of the coil assembly along the third direction is an interface end;

[0018] The first side plate and the interface end are located on the same side along the third direction inside the air handling unit.

[0019] In some embodiments, along the second direction, the first drain port is disposed on a side of the first side plate adjacent to the second water receiving tray.

[0020] In some embodiments, a side plate of the second water receiving tray along the third direction is a second side plate, and the second side plate is provided with a second drain port.

[0021] In some embodiments, along the first direction, the second drain port is disposed on a side of the second side plate adjacent to the first side plate.

[0022] In some embodiments, a plane perpendicular to the first direction is a first projection plane, the first drain port forms a first orthographic projection on the first projection plane, the sensor forms a second orthographic projection on the first projection plane, and along the third direction, the first orthographic projection and the second orthographic projection at least partially overlap;

[0023] and / or,

[0024] A side plate of the second water receiving tray along the third direction is a second side plate, the second side plate is provided with a second drain outlet, the plane perpendicular to the second direction is a second projection plane, the second drain outlet forms a third orthographic projection on the second projection plane, the sensor forms a fourth orthographic projection on the second projection plane, and along the third direction, the third orthographic projection at least partially overlaps with the fourth orthographic projection.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the technical solution of the present application, the air handling unit includes a heat exchanger, a first water receiving pan, a second water receiving pan and a sensor. Along the first direction, the sensor is arranged on the side of the heat exchanger near the first water receiving pan. Along the second direction, the sensor is arranged on the side of the heat exchanger near the second water receiving pan. Since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be deposited on the first water receiving pan or the second water receiving pan under the influence of gravity. Therefore, the refrigerant concentration at the first water receiving pan or the second water receiving pan is significantly higher than other areas inside the air handling unit. The sensor of this solution is arranged near the first water receiving pan and the second water receiving pan at the same time, which can ensure the accuracy of refrigerant monitoring. In addition, regardless of whether the air handling unit is installed vertically or horizontally, the first water receiving pan or the second water receiving pan can meet the need for receiving condensed water correspondingly, which can ensure the waterproof effect of the air handling unit. The sensor is arranged near the first water receiving pan and the second water receiving pan at the same time to meet the refrigerant monitoring needs of the air handling unit under different installation conditions. Therefore, the air handling unit of this solution can effectively improve the reliability of refrigerant monitoring, making it easier for relevant personnel to deal with refrigerant leakage in a timely manner and ensuring the continued normal operation of the air handling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A simplified schematic diagram of an air handling unit in one embodiment of the present invention; wherein the sensor is not shown;

[0029] Figure 2 A simplified schematic diagram of a heat exchanger in one embodiment of the present invention, wherein an interface end of a coil assembly is shown;

[0030] Figure 3 This is a schematic diagram of the area division of an air handling unit in one embodiment of the present invention, wherein a first plane, a second plane and a third plane are shown;

[0031] Figure 4 It is a schematic diagram of an air handling unit along a first direction in one embodiment of the present invention; wherein the sensor and the first drain port are located on the same side of the air handling unit along the first direction;

[0032] Figure 5 It is a schematic diagram of an air handling unit along a first direction in one embodiment of the present invention; wherein the sensor and the first drain port are located on the same side of the air handling unit along a second direction;

[0033] Figure 6 A schematic diagram of an air handling unit along a first direction in one embodiment of the present invention; wherein the sensor and the first drain port are located on the same side of the air handling unit along a third direction;

[0034] Figure 7 It is a schematic diagram of the structure of an air handling unit along a first direction in one embodiment of the present invention; wherein the air handling unit is arranged vertically along a second direction, that is, arranged vertically;

[0035] Figure 8 for Figure 7 A local enlarged schematic diagram of the middle A;

[0036] Fig. 9 It is a schematic diagram of the structure of an air handling unit along a first direction in one embodiment of the present invention; wherein the air handling unit is arranged vertically along a third direction, that is, arranged horizontally;

[0037] Fig.10 It is a structural schematic diagram of an air handling unit in one embodiment of the present invention;

[0038] Fig.11 for Fig.10 A partial enlarged schematic diagram of point B in the middle;

[0039] Fig.12 It is a schematic diagram of the structure of the sensor and the water retaining part in one embodiment of the present invention; wherein the water retaining part is provided with the sensor;

[0040] Fig.13 A schematic diagram of the structure of a sensor in one embodiment of the present invention;

[0041] Fig.14 It is a structural schematic diagram of a water retaining portion in one embodiment of the present invention;

[0042] Fig.15 This is a schematic diagram of an air handling unit observed along a third direction in another embodiment of the present invention; wherein, along the first direction, the sensor is located on a side of the heat exchanger adjacent to the first water receiving pan;

[0043] Fig.16It is a schematic diagram of an air handling unit observed along a third direction in another embodiment of the present invention; wherein, along the second direction, the sensor is located on a side of the heat exchanger adjacent to the second water receiving pan;

[0044] Fig.17 It is a structural schematic diagram of an air handling unit in another embodiment of the present invention;

[0045] Fig.18 for Fig.17 A partial enlarged view of point C in the middle;

[0046] Fig.19 It is a structural schematic diagram of an air handling unit observed along the third direction in another embodiment of the present invention; wherein the air handling unit is arranged vertically along the second direction;

[0047] Fig. 20 It is a structural schematic diagram of an air handling unit observed along a first direction in another embodiment of the present invention;

[0048] Fig.21 for Fig. 20 A partial enlarged view of point D in the middle;

[0049] Fig. 22 is a schematic diagram of a heat exchanger and a sensor in another embodiment of the present invention;

[0050] Fig.23 for Fig. 22 A partial enlarged view of point E in the middle;

[0051] Fig.24 It is a structural schematic diagram of an air handling unit observed along a third direction in another embodiment of the present invention; wherein the air handling unit is arranged vertically along a first direction;

[0052] Fig.25 is a schematic diagram of a coil assembly observed along a second direction in another embodiment of the present invention;

[0053] Fig.26 A schematic structural diagram of a water receiving tray assembly in yet another embodiment of the present invention;

[0054] Fig. 27 It is a schematic diagram of a water receiving tray assembly observed along a first direction in yet another embodiment of the present invention;

[0055] Fig.28 This is a structural schematic diagram of an air handling unit in yet another embodiment of the present invention;

[0056] Fig.29 is a cross-sectional schematic diagram of an air handling unit observed along a second direction in yet another embodiment of the present invention;

[0057] Fig.30 for Fig.29 A partial enlarged view of the F in the middle;

[0058] Fig.31 This is a schematic diagram of an air handling unit observed along the second direction in another embodiment of the present invention; wherein the air handling unit is arranged vertically along the first direction;

[0059] Fig.32 This is a schematic diagram of an air handling unit observed along the second direction in yet another embodiment of the present invention; wherein the air handling unit is vertically arranged along the fourth direction.

[0060] Description of Figure Numbers:

[0061] Air handling unit 10;

[0062] Water tray assembly 101;

[0063] Heat exchanger 100; coil assembly 110; interface end 111; shunt pipe 112; first shunt assembly 1121;

[0064] Second flow dividing assembly 1122; guard plate 120; connecting plate 130;

[0065] First water receiving tray 200; first side plate 210; first drain port 211; water receiving chamber 220; water receiving port 230; bottom wall 240; air duct 250; inner wall surface 260; third side plate 270; fourth side plate 280;

[0066] Second water receiving tray 300; second side plate 310; second drain port 311;

[0067] Sensor 400; opening 410; heat insulating portion 420;

[0068] Housing 500;

[0069] Water retaining portion 600; water guiding end 610;

[0070] Control assembly 700;

[0071] Wiring harness 800; first connecting section 810; second connecting section 820; junction portion 830;

[0072] First direction X; second direction Y; third direction Z; fourth direction V;

[0073] First plane a; second plane b; third plane c.

[0074] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] In the related art, for different types of air conditioners, due to the uncertainty of the specific location of the refrigerant leakage point and the diversity of air conditioner installation methods, the relevant setting position of the refrigerant sensor is uncertain, and is only based on the normal layout requirements of the internal components of the air conditioner. Therefore, the refrigerant sensor cannot monitor and feedback the refrigerant leakage at different positions in the heat exchanger in a timely and accurate manner, and the reliability of refrigerant monitoring is poor.

[0077] In view of this, an embodiment of the present invention proposes an air handling unit 10 that can ensure the reliability of refrigerant monitoring. It can be understood that the air handling unit 10 can be an indoor unit of an air conditioner or an outdoor unit of an air conditioner. The specific details may depend on the actual situation. The embodiment of the present application takes the air handling unit 10 as an indoor unit of an air conditioner as an example for explanation. It should be noted that the refrigerant in the embodiment of the present application can be a flammable refrigerant or a non-flammable refrigerant. Some embodiments of the present application take the refrigerant as a flammable refrigerant as an example for explanation. The flammable refrigerant can be R32 or R454B, etc. The specific setting of the refrigerant can refer to the relevant known technology. Refer to the following Figures 15 to 25 The air handling unit 10 according to the embodiment of the present invention is introduced. Specifically, the air handling unit 10 includes a heat exchanger 100, a first water receiving tray 200, a second water receiving tray 300 and a sensor 400.

[0078] The heat exchanger 100 is used to exchange heat with the outside air. Fig.25 The heat exchanger 100 includes a coil assembly 110, which is used to conduct refrigerant. The refrigerant circulates inside the coil assembly 110 and evaporates or condenses adaptively to cool or heat the air. Specifically, when the air conditioner is cooling, the refrigerant evaporates and absorbs heat in the coil assembly 110 of the indoor unit, thereby absorbing indoor heat and lowering the indoor temperature. When the air conditioner is heating, the refrigerant condenses and releases heat in the coil assembly 110 of the indoor unit, thereby releasing heat indoors and increasing the indoor temperature. The specific configuration of the heat exchanger 100 can refer to the relevant known technology.

[0079] The first water receiving pan 200 is used to hold condensed water to prevent the condensed water from overflowing and flowing into the circuit components inside the air handling unit 10 to cause malfunctions. In order to facilitate the description and understanding of the relative position relationship between the first water receiving pan 200 and the heat exchanger 100, a first direction X is defined. The first water receiving pan 200 is disposed on one side of the heat exchanger 100 along the first direction X. The specific direction of the first direction X is described below. Fig.15 The orientation is used as a reference. In some embodiments, the first direction X can be an up-down direction, and the first water receiving pan 200 can be disposed on the upper side or the lower side of the heat exchanger 100 along the up-down direction. In other embodiments, the first direction X can also be a left-right direction, and the first water receiving pan 200 is disposed on the left side or the right side of the heat exchanger 100 along the left-right direction. In other embodiments, the first direction X can also be a front-to-back direction, and the first water receiving pan 200 is disposed on the front side or the rear side of the heat exchanger 100 along the front-to-back direction. The specific setting position of the first water receiving pan 200 can be determined according to actual conditions. Some embodiments of the present application are described by taking the first water receiving pan 200 being disposed on the left side of the heat exchanger 100 along the left-to-right direction as an example.

[0080] It should be noted that no matter where the first water receiving tray 200 is specifically located on the heat exchanger 100, when the air handling unit 10 is arranged vertically along the first direction X and operates, the first water receiving tray 200 should be located vertically below the heat exchanger 100 along the first direction X, so that the first water receiving tray 200 can vertically hold condensed water dripping from the heat exchanger 100 along the first direction X.

[0081] The second water receiving tray 300 has the same function as the first water receiving tray 200, which is to contain condensed water to prevent the condensed water from overflowing and flowing into the circuit inside the air handling unit 10 to cause a fault. It can be understood that the second water receiving tray 300 and the first water receiving tray 200 are arranged at different positions to meet the water holding requirements of the air handling unit 10 when it is installed in different scenarios.

[0082] The specific arrangement position of the second water receiving tray 300 is described below. In order to facilitate the description and understanding of the relative position relationship between the second water receiving tray 300 and the heat exchanger 100, a second direction Y is defined. The second water receiving tray 300 is arranged on one side of the heat exchanger 100 along the second direction Y. The second direction Y is perpendicular to the first direction X. Fig.15 As a reference, in some embodiments, when the first direction X is the up-down direction, the second direction Y can be the left-right direction, that is, the second water receiving tray 300 can be arranged on the left or right side of the heat exchanger 100 along the left-right direction. The second direction Y can also be the front-to-back direction, that is, the second water receiving tray 300 can be arranged on the front side or the rear side of the heat exchanger 100 along the front-to-back direction. In other embodiments, when the first direction X is the left-to-right direction, the second direction Y can be the up-down direction, that is, the second water receiving tray 300 can be arranged on the upper side or the lower side of the heat exchanger 100 along the up-down direction. Some embodiments of the present application are described by taking the second direction Y pointing to the up-down direction and the second water receiving tray 300 being arranged on the lower side of the heat exchanger 100 along the up-down direction as an example.

[0083] It can be understood that no matter where the second water receiving tray 300 is specifically located on the heat exchanger 100, when the air handling unit 10 is placed along the second direction Y and working, the second water receiving tray 300 should be located vertically below the heat exchanger 100 so that the second water receiving tray 300 can hold condensed water dripping vertically from the heat exchanger 100.

[0084] It should be noted that the air handling unit 10 of the embodiment of the present application can be installed vertically (see Fig.19 , vertically arranged along the second direction Y) or horizontally installed (refer to Fig.24 , arranged along the first direction X), that is, it can adapt to a variety of application scenarios. By setting the first water receiving tray 200 and the second water receiving tray 300, it can meet the water storage requirements of the heat exchanger 100 under different installation modes.

[0085] Reference Fig.15 The air handling unit 10 further includes a sensor 400, which is used to detect the refrigerant leaking from the heat exchanger 100. That is, when the refrigerant in the heat exchanger 100 leaks, the sensor 400 can monitor this abnormal situation and feedback it to the controller and relevant personnel, so that the relevant personnel can deal with the leakage in time, ensure the heat exchange effect of the heat exchanger 100, and eliminate related safety hazards. The specific setting of the sensor 400 can refer to the relevant known technology.

[0086] Reference Fig.15 , the meaning of "along the first direction X, the sensor 400 is located on the side of the heat exchanger 100 adjacent to the first water receiving tray 200" is defined as follows: the plane perpendicular to the first direction X is the first plane a, and the distances from the two opposite outermost end points of the heat exchanger 100 along the first direction X to the first plane a are equal. Along the first direction X, the sensor 400 is located on the side of the first plane a facing the first water receiving tray 200.

[0087] It can be seen from the above definition that when the sensor 400 is located on the side of the first plane a away from the first water receiving tray 200 , along the first direction X, the sensor 400 is disposed on the side of the heat exchanger 100 away from the first water receiving tray 200 .

[0088] Reference Fig.16 The meaning of "along the second direction Y, the sensor 400 is located on the side of the heat exchanger 100 adjacent to the second water receiving tray 300" is defined below: the plane perpendicular to the second direction Y is the second plane b, and the distances from the two opposite outermost end points of the heat exchanger 100 along the second direction Y to the second plane b are equal. Along the second direction Y, the sensor 400 is located on the side of the second plane b facing the second water receiving tray 300.

[0089] It can be seen from the above definition that when the sensor 400 is located on the side of the second plane b away from the second water receiving tray 300 , along the second direction Y, the sensor 400 is disposed on the side of the heat exchanger 100 away from the second water receiving tray 300 .

[0090] In the technical solution of the present application, the air handling unit 10 includes a heat exchanger 100, a first water receiving pan 200, a second water receiving pan 300 and a sensor 400. Along the first direction X, the sensor 400 is arranged on the side of the heat exchanger 100 adjacent to the first water receiving pan 200. Along the second direction Y, the sensor 400 is arranged on the side of the heat exchanger 100 adjacent to the second water receiving pan 300. Since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be deposited on the first water receiving pan 200 or the second water receiving pan 300 under the influence of gravity. Therefore, the refrigerant concentration at the first water receiving pan 200 or the second water receiving pan 300 is significantly higher than other areas inside the air handling unit 10. The sensor 400 of the present solution is arranged adjacent to both the first water receiving pan 200 and the second water receiving pan 300, which can ensure the accuracy of refrigerant monitoring. In addition, no matter whether the air handling unit 10 is installed vertically or horizontally, the first water receiving tray 200 or the second water receiving tray 300 can meet the need of receiving condensed water accordingly, and can ensure the waterproof effect of the air handling unit 10. The sensor 400 is arranged near the first water receiving tray 200 and the second water receiving tray 300 at the same time to meet the refrigerant monitoring needs of the air handling unit 10 under different installation forms. Therefore, the air handling unit 10 of this solution can effectively improve the reliability of refrigerant monitoring, so that relevant personnel can deal with refrigerant leakage in a timely manner and ensure the continuous normal operation of the air handling unit 10.

[0091] Reference Fig.17 and Fig.25 In some embodiments, the heat exchanger 100 includes a coil assembly 110. The coil assembly 110 is used to conduct the refrigerant. To facilitate the description and understanding of the specific structure of the coil assembly 110, a third direction Z is defined. The third direction Z is perpendicular to the first direction X and the second direction Y. Fig.15 Taking the orientation of as a reference, the first direction X may be the left-right direction, the second direction Y may be the up-down direction, and the third direction Z may be the front-back direction.

[0092] One end of the coil assembly 110 along the third direction Z is the interface end 111. When the third direction Z points to the front-to-back direction, in some embodiments, the front end of the coil assembly 110 along the front-to-back direction is the interface end 111. In other embodiments, the rear end of the coil assembly 110 along the front-to-back direction is the interface end 111. Some embodiments of the present application are described by taking the front end of the coil assembly 110 along the front-to-back direction as the interface end 111 as an example.

[0093] Reference Fig.17, the specific positional relationship between the sensor 400 and the heat exchanger 100 is introduced below. Specifically, "along the third direction Z, the side of the sensor 400 close to the interface end 111 of the heat exchanger 100" is defined as follows: the plane perpendicular to the third direction Z is the third plane c, and the distances from the two opposite outermost end points of the heat exchanger 100 along the third direction Z to the third plane c are equal. Along the third direction Z, the sensor 400 is located on the side of the third plane c facing the interface end 111.

[0094] It should be noted that the first plane a, the second plane b and the third plane c divide the internal space of the air handling unit 10 into eight small spaces. Figure 3 , the sensor 400 can be arranged in a specific small space. For example, in some embodiments, along the first direction X, the sensor 400 is close to one side of the interface end 111 of the heat exchanger 100; along the second direction Y, the sensor 400 is close to one side of the heat exchanger 100 facing the first water receiving tray 200; along the third direction Z, the sensor 400 is close to one side of the interface end 111 of the heat exchanger 100. That is, it can be considered that the sensor is located Figure 3 In the small space located in the front, bottom and right of the orientation reference shown.

[0095] The applicant found that the refrigerant mainly leaked from the interface end 111 of the coil assembly 110. Compared with the prior art solution in which the sensor is directly arranged on the wall of the air-conditioning shell, the sensor 400 in this solution is arranged close to the interface end 111, that is, the distance from the sensor 400 to the interface end 111 is shorter, so the sensor 400 can monitor the refrigerant leakage more quickly, thereby ensuring the timeliness of the refrigerant monitoring.

[0096] When a refrigerant leak occurs in the heat exchanger 100, due to the influence of gravity, the refrigerant will be deposited from the coil assembly 110 in the heat exchanger 100 to the first water receiving tray 200 located below the heat exchanger 100. In some embodiments, the sensor 400 is connected to the heat exchanger 100. It can be understood that the sensor 400 can be fixedly connected to the heat exchanger 100, or it can be detachably connected to the heat exchanger 100. It depends on the actual situation. Some embodiments of the present application are described by taking the detachable connection between the sensor 400 and the heat exchanger 100 as an example. The sensor 400 is detachably connected to the heat exchanger 100, which is convenient for regular replacement of the sensor 400 and ensures the reliability of the refrigerant monitoring of the sensor 400.

[0097] Reference Fig.15 Furthermore, along the first direction X, the sensor 400 is located between the heat exchanger 100 and the first water receiving tray 200, that is, the leaked refrigerant can first contact the sensor 400 before flowing from the heat exchanger 100 and depositing on the first water receiving tray 200. Therefore, this solution can effectively shorten the distance from the leaked refrigerant to the sensor 400, and further improve the reliability of the refrigerant monitoring of the sensor 400.

[0098] Reference Fig.17 and Fig.18 In some embodiments, the heat exchanger 100 includes a guard plate 120 facing the first water receiving tray 200. The guard plate 120 can protect the fins in the heat exchanger 100. It can be understood that in addition to the guard plate 120 facing the first water receiving tray 200, other guard plates 120 can also be provided. A plurality of guard plates 120 enclose a receiving cavity that can accommodate the fins.

[0099] Reference Fig. 22 and Fig.23 , a connecting plate 130 is connected to one side of the guard plate 120 adjacent to the interface end 111. The sensor 400 is connected to the wall of the connecting plate 130 facing away from the guard plate 120, and the specific connection position of the sensor 400 can be determined according to the actual situation. It can be understood that since the refrigerant mainly leaks from the interface end 111, and the sensor 400 is connected to the connecting plate 130 adjacent to the interface end 111, on the one hand, the sensor 400 and the interface end 111 have a smaller distance to ensure the timeliness of monitoring the leaking refrigerant, on the other hand, the connecting plate 130 can also play a water-blocking role, that is, it can prevent condensed water from flowing from the heat exchanger 100 to the sensor 400, prevent the sensor 400 from getting water, and extend the service life of the sensor 400.

[0100] The first water receiving tray 200 is provided with a first drain port 211, and the first drain port 211 can discharge the condensed water collected by the first water receiving tray 200 out of the air handling unit 10. The specific setting position of the first drain port 211 on the first water receiving tray 200 is introduced below, and the first water receiving tray 200 is defined as having a first side plate 210. The first side plate 210 is a side plate of the first water receiving tray 200 along the third direction Z. Fig.19 As a reference, when the third direction Z points to the front-to-back direction, the first side plate 210 can be the side plate on the front side of the first water receiving tray 200 along the front-to-back direction, or can be the side plate on the rear side of the first water receiving tray 200 along the front-to-back direction. Some embodiments of the present application are described by taking the side plate on the front side of the first water receiving tray 200 as the first side plate 210 as an example.

[0101] Reference Fig.19, the first side plate 210 is provided with a first drain port 211. The first drain port 211 can be set to a variety of shapes. Specifically, the first drain port 211 can be set to a circular, square, trapezoidal or triangular shape, etc., depending on the actual situation. Some embodiments of the present application are described by taking the first drain port 211 as a circular shape as an example. It can be understood that the first drain port 211 can be provided on the lower side of the first side plate 210 along the water receiving depth direction of the first water receiving tray 200 to ensure the removal effect of the condensed water in the first water receiving tray 200, and avoid the situation where too much condensed water remains in the first water receiving tray 200 and the condensed water evaporates and enters the internal circuit of the air handling unit 10. It should be noted that the first drain port 211 can be set to be single or multiple. Some embodiments of the present application are described by taking the setting of two first drain ports 211 as an example.

[0102] It should be noted that, in some embodiments, when two first drain ports 211 are provided, one of the first drain ports 211 may be an overflow port, and the other first drain port 211 may be an outlet port. It is understood that the outlet port is closer to the bottom wall of the first water receiving tray 200 than the overflow port.

[0103] Since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be affected by gravity and deposited on the lower side of the first water receiving pan 200. Therefore, the refrigerant will gather and flow to the first drain port 211, that is, the refrigerant concentration at the first drain port 211 is higher than the refrigerant concentration at other positions of the first water receiving pan 200. Regardless of where the refrigerant leaks in the heat exchanger 100, the leaked refrigerant will be deposited and flow to the first drain port 211. In this solution, because the sensor 400 is arranged near the first side plate 210, the first side plate 210 is provided with a first drain port 211, that is, the sensor 400 is arranged near the first drain port 211. The sensor 400 of this solution can realize the monitoring of multiple positions of the air handling unit, further improving the reliability of refrigerant monitoring.

[0104] In some embodiments, the heat exchanger 100 includes a coil assembly 110. The coil assembly 110 is used to conduct refrigerant. One end of the coil assembly 110 along the third direction Z is an interface end 111. It should be noted that the third direction Z is perpendicular to the first direction X and the second direction Y. Fig.25 As a reference, the first direction X may be the left-right direction, the second direction Y may be the up-down direction, and the third direction Z may be the front-to-back direction. When the third direction Z points to the front-to-back direction, in some embodiments, the front end of the coil assembly 110 along the front-to-back direction may be the interface end 111. In other embodiments, the rear end of the coil assembly 110 along the front-to-back direction may be the interface end 111. Some embodiments of the present application are described by taking the front end of the coil assembly 110 along the front-to-back direction as the interface end 111 as an example.

[0105] The relative position relationship between the first side plate 210 and the interface end 111 of the coil assembly 110 is described below. The first side plate 210 and the interface end 111 are located on the same side along the third direction Z in the air handling unit 10. Fig.19 The orientation is used as a reference, that is, the interface end 111 can be located together with the first side plate 210 at the front side of the air handling unit 10.

[0106] In this solution, the sensor 400 is arranged near the first drain port 211 of the first side plate 210. Since the first side plate 210 and the interface end 111 are located on the same side, that is, the sensor 400 is also arranged near the interface end 111. Since the refrigerant mainly leaks from the interface end 111, this solution can effectively improve the accuracy of refrigerant monitoring of the sensor 400.

[0107] The relative position relationship between the first drain port 211 and the second water receiving tray 300 is described below. Fig.19 When the air handling unit 10 is installed vertically along the second direction Y (vertical installation), the leaked refrigerant is deposited and gathered in the second water receiving tray 300. Fig.24 When the air handling unit 10 is installed vertically (horizontally) along the first direction X, the leaked refrigerant is deposited and gathered in the first water receiving tray 200. In some embodiments, along the second direction Y, Fig. 22 As a reference, i.e., in the up-down direction, the first drain port 211 is disposed on the side of the first side plate 210 adjacent to the second water receiving pan 300, and since the first drain port 211 is disposed on the side of the first side plate 210 adjacent to the first water receiving pan 200, the first drain port 211 is disposed adjacent to both the first water receiving pan 200 and the second water receiving pan 300. Therefore, regardless of whether the air handling unit 10 is installed vertically or horizontally, the sensor 400 can detect the leaked refrigerant in a timely and accurate manner, thereby ensuring the reliability of the sensor 400 in monitoring the refrigerant.

[0108] The second water receiving tray 300 is provided with a second drain port 311, and the second drain port 311 can discharge the condensed water received by the second water receiving tray 300 out of the air handling unit 10. The specific setting position of the second drain port 311 on the second water receiving tray 300 is introduced below, and the second water receiving tray 300 is defined as having a second side plate 310. The second side plate 310 is a side plate of the second water receiving tray 300 along the third direction Z. Fig.19 As a reference, when the third direction Z points to the front-to-back direction, the second side plate 310 can be the side plate on the front side of the second water receiving tray 300 along the front-to-back direction, or can be the side plate on the rear side of the second water receiving tray 300 along the front-to-back direction. Some embodiments of the present application are described by taking the side plate on the front side of the second water receiving tray 300 as the second side plate 310 as an example.

[0109] Reference Fig.19, the second side plate 310 is provided with a second drain outlet 311. The second drain outlet 311 may be the same as the relevant settings of the first drain outlet 211, or may be different. The second drain outlet 311 may be set to a variety of shapes. Specifically, the second drain outlet 311 may also be set to a circular, square, trapezoidal or triangular shape, etc., depending on the actual situation. Some embodiments of the present application are described by setting the second drain outlet 311 as a circular shape. It can be understood that the second drain outlet 311 can be provided on the lower side of the second side plate 310 along the water receiving depth direction of the second water receiving tray 300. It should be noted that the second drain outlet 311 can be provided individually or in multiples. Some embodiments of the present application are described by setting two second drain outlets 311 as an example.

[0110] This solution sets a second drain port 311 on the second side plate 310 to facilitate timely discharge of condensed water in the second water receiving tray 300, prevent condensed water from overflowing from the water receiving cavity 220 of the second water receiving tray 300 and entering the internal circuit components of the air handling unit 10, and ensure that the air handling unit 10 can continue to operate normally.

[0111] The specific location of the second drain port 311 on the second water receiving tray 300 is described below. In some embodiments, the second drain port 311 is located on a side of the second side plate 310 adjacent to the first water receiving tray 200 along the first direction X. Fig.19 The direction in is used as a reference, and the first direction X is the left-right direction, that is, the second drain port 311 is located on the side of the second side plate 310 adjacent to the first water receiving pan 200 along the left-right direction. Since the first drain port 211 is located on the side of the first side plate 210 adjacent to the second water receiving pan 300. Therefore, it can be understood that the sensor 400 is arranged adjacent to the first drain port 211 and the second drain port 311, that is, no matter what installation method the air handling unit 10 adopts, the sensor 400 can timely and accurately monitor the refrigerant deposited and gathered at the first drain port 211 or the second drain port 311, thereby ensuring the reliability of refrigerant monitoring.

[0112] The relative arrangement positions of the sensor 400 and the first drain port 211 are described in detail below using projection. The first projection plane is defined to be perpendicular to the first direction X. Fig.15 As a reference, the first direction X may refer to the left-right direction. It can be understood that in some embodiments, the first projection plane may be a plane on the air handling unit 10. In other embodiments, the first projection plane may also be a plane outside the air handling unit 10.

[0113] The first drain port 211 forms a first orthographic projection on the first projection plane, and the first orthographic projection forms a closed geometric figure. The sensor 400 forms a second orthographic projection on the first projection plane, and the second orthographic projection forms a closed geometric figure.

[0114] Along the third direction Z, the first orthographic projection at least partially overlaps with the second orthographic projection. It should be noted that in some embodiments, the first orthographic projection may partially overlap with the second orthographic projection. In other embodiments, the first orthographic projection may completely overlap with the second orthographic projection. In this solution, the first orthographic projection overlaps with the second orthographic projection along the third direction Z, that is, when observed along the third direction Z, the first drain outlet 211 and the sensor 400 are at least partially overlapped. In other words, the sensor 400 is arranged near the first drain outlet 211, that is, the distance from the sensor 400 to the first drain outlet 211 is shorter, and since the leaked refrigerant will be deposited and gathered at the first drain outlet 211, the sensor 400 can directly monitor the leaked refrigerant, thereby further improving the timeliness and accuracy of refrigerant detection.

[0115] In some embodiments, a side plate of the second water receiving tray 300 along the third direction Z is the second side plate 310. Fig.19 With reference to the position in FIG. 3 , the side plate on the front side of the second water receiving tray 300 may be a second side plate 310. The second side plate 310 is provided with a second drain port 311. The specific arrangement of the second drain port 311 may be the same as above, so it will not be repeated here.

[0116] The relative position of the sensor 400 and the second drain port 311 is described in detail below using projection. The second projection plane is defined to be perpendicular to the third direction Z. Fig.19 The direction in is used as a reference, and the third direction Z can refer to the front and back direction.

[0117] The second drain port 311 forms a third orthographic projection on the second projection plane, and the third orthographic projection forms a closed geometric figure. The sensor 400 forms a fourth orthographic projection on the second projection plane, and the fourth orthographic projection forms a closed geometric figure.

[0118] Along the third direction Z, the third orthographic projection at least partially overlaps with the fourth orthographic projection. In some embodiments, the third orthographic projection may partially overlap with the fourth orthographic projection. In other embodiments, the third orthographic projection may completely overlap with the fourth orthographic projection. In this solution, the third orthographic projection overlaps with the fourth orthographic projection along the third direction Z, that is, when observed along the third direction Z, the second drain port 311 and the sensor 400 are at least partially overlapped. That is, the distance from the sensor 400 to the second drain port 311 is shorter, and because the leaked refrigerant will be deposited and gathered at the second drain port 311, the sensor 400 can monitor the leaked refrigerant faster and more accurately, thereby ensuring the reliability of the refrigerant detection of the sensor 400.

[0119] Reference Figures 1 to 14, another embodiment of the present invention proposes an air handling unit 10, which can ensure the reliability of refrigerant monitoring. It can be understood that the air handling unit 10 can be an indoor unit of an air conditioner or an outdoor unit of an air conditioner. It can be determined according to the actual situation. The embodiment of the present application takes the air handling unit 10 as an indoor unit of an air conditioner as an example for explanation. It should be noted that the refrigerant in the embodiment of the present application can be a flammable refrigerant or a non-flammable refrigerant. Some embodiments of the present application take the refrigerant as a flammable refrigerant as an example for explanation. The flammable refrigerant can be R32 or R454B, etc. The specific setting of the refrigerant can refer to the relevant known technology. The air handling unit 10 of the embodiment of the present invention is described in detail below. Specifically, the air handling unit 10 includes a heat exchanger 100, a first water receiving tray 200 and a sensor 400.

[0120] Reference Figure 1 and Figure 2 , the heat exchanger 100 is used to exchange heat with the outside air. The heat exchanger 100 includes a coil assembly 110, and the coil assembly 110 is used to conduct refrigerant. The refrigerant circulates inside the coil assembly 110 and evaporates or condenses adaptively to cool or heat the air. Specifically, when the air conditioner is cooling, the refrigerant evaporates and absorbs heat in the coil assembly 110 of the indoor unit, thereby absorbing indoor heat and lowering the indoor temperature. When the air conditioner is heating, the refrigerant condenses and releases heat in the coil assembly 110 of the indoor unit, thereby releasing heat indoors and increasing the indoor temperature. The specific configuration of the heat exchanger 100 can refer to the relevant known technology.

[0121] Reference Figure 2 In order to facilitate the description and understanding of the specific structure of the coil assembly 110, a first direction X is defined. One end of the coil assembly 110 along the first direction X is an interface end 111, which is used to communicate with a connecting pipe to connect multiple base pipes in the coil assembly 110 as a whole to achieve evaporation and cooling of the refrigerant. It can be understood that the connecting pipe can be a U-shaped connecting pipe. The specific direction of the first direction X is described below. Figure 1 The first direction X is used as a reference. In some embodiments, the first direction X may be a front-to-back direction, that is, the first direction X may be a direction from front to back, or a direction from back to front. In other embodiments, the first direction X may also be a left-to-right direction, that is, the first direction X may be a direction from left to right, or a direction from right to left. The specific direction of the first direction X may depend on the actual situation. Some embodiments of the present application are described by taking the first direction X as a direction from front to back as an example.

[0122] Reference Figure 1, in order to facilitate the description and understanding of the arrangement position of the first water receiving tray 200 relative to the heat exchanger 100, a second direction Y is defined. The second direction Y is perpendicular to the first direction X. In some embodiments, when the first direction X is the front-to-back direction, the second direction Y can be the up-and-down direction, and can also be the left-to-right direction. In other embodiments, when the first direction X is the left-to-right direction, the second direction Y can be the front-to-back direction, and can also be the up-and-down direction. Some embodiments of the present application are described by taking the first direction X as the front-to-back direction and the second direction Y as the up-and-down direction as an example. The first water receiving tray 200 is used to hold the condensed water generated by the operation of the heat exchanger 100 when the air handling unit 10 is arranged vertically along the second direction Y.

[0123] Specifically, the first water receiving tray 200 is located at one side of the heat exchanger 100 along the second direction Y. Figure 1 The orientation in is used as a reference. In some embodiments, when the second direction Y is the up-down direction, the first water receiving pan 200 may be located at the lower side of the heat exchanger 100 along the up-down direction, or may be located at the upper side of the heat exchanger 100 along the up-down direction. In other embodiments, when the second direction Y is the left-right direction, the first water receiving pan 200 may also be located at the left side of the heat exchanger 100 along the left-right direction, or may be located at the right side of the heat exchanger 100 along the left-right direction. The specific position of the first water receiving pan 200 depends on the actual situation. Some embodiments of the present application are described by taking the second direction Y pointing to the up-down direction and the first water receiving pan 200 being located at the lower side of the heat exchanger 100 along the up-down direction as an example.

[0124] The first drain port 211 can discharge the condensed water collected by the first water receiving tray 200 out of the air handling unit 10. The specific setting position of the first drain port 211 on the first water receiving tray 200 is described below, and the first water receiving tray 200 is defined as having a first side plate 210. The first side plate 210 is a side plate of the first water receiving tray 200 along the first direction X. Figure 3 The first side plate 210 can be a side plate on the front side of the first water receiving tray 200 along the front-to-back direction, or can be a side plate on the rear side of the first water receiving tray 200 along the front-to-back direction. Some embodiments of the present application are described by taking the side plate on the front side of the first water receiving tray 200 as the first side plate 210 as an example. Figure 3 and Figure 4 It should be noted that the first side panel 210 and the interface end 111 are located on the same side along the first direction X in the air handling unit 10 , that is, the interface end 111 can be located together with the first side panel 210 at the front side of the air handling unit 10 .

[0125] The first side plate 210 is provided with a first drain port 211. The first drain port 211 can be set in various shapes. Specifically, the first drain port 211 can be set in a circular shape, a square shape, a trapezoidal shape, or a triangular shape, etc., depending on the actual situation. Fig. 9 It can be understood that the first drain port 211 can be provided on the lower side of the first side plate 210 along the second direction Y to ensure the drainage effect of the condensed water in the first water receiving tray 200 and avoid the situation where too much condensed water remains in the first water receiving tray 200 and the condensed water evaporates and enters the internal circuit components of the air handling unit 10.

[0126] Reference Figure 3 The air handling unit 10 further includes a sensor 400, which is used to detect the refrigerant leaking from the heat exchanger 100. That is, when the refrigerant in the heat exchanger 100 leaks, the sensor 400 can monitor this abnormal situation and feedback it to the controller and relevant personnel, so that the relevant personnel can deal with the leakage in time, ensure the heat exchange effect of the heat exchanger 100, and eliminate related safety hazards. The specific setting of the sensor 400 can refer to the relevant known technology.

[0127] Reference Figure 3 The meaning of "along the first direction X, the sensor 400 is disposed on one side of the interface end 111 of the heat exchanger 100" is defined as follows: the plane perpendicular to the first direction X is the first plane a, and the distances from the two opposite outermost end points of the heat exchanger 100 along the first direction X to the first plane a are equal. Along the first direction X, the sensor 400 is located on the side of the first plane a facing the interface end 111.

[0128] It can be seen from the above definition that when the sensor 400 is located on the side of the first plane a away from the interface end 111 , then along the first direction X, the sensor 400 is disposed on the side of the heat exchanger 100 away from the interface end 111 .

[0129] Reference Figure 3 and Figure 4 The meaning of "along the second direction Y, the sensor 400 is located on the side of the heat exchanger 100 close to the first water receiving tray 200" is defined below: the plane perpendicular to the second direction Y is the second plane b, and the distances from the two opposite outermost end points of the heat exchanger 100 along the second direction Y to the second plane b are equal. Along the second direction Y, the sensor 400 is located on the side of the second plane b facing the first water receiving tray 200.

[0130] It can be seen from the above definition that when the sensor 400 is located on the side of the second plane b away from the first water receiving tray 200 , along the second direction Y, the sensor 400 is disposed on the side of the heat exchanger 100 away from the first water receiving tray 200 .

[0131] In the technical solution of the present application, one end of the coil assembly 110 in the heat exchanger 100 along the first direction X is the interface end 111. The first water receiving pan 200 is located on one side of the heat exchanger 100 along the second direction Y. The first side plate 210 of the first water receiving pan 200 along the first direction X is provided with a first drain port 211. The first side plate 210 and the interface end 111 are located on the same side of the air handling unit 10 along the first direction X, the sensor 400 is arranged on one side of the interface end 111 of the heat exchanger 100 along the first direction X, and the sensor 400 is arranged on one side of the heat exchanger 100 close to the first water receiving pan 200 along the second direction Y, that is, the sensor 400 is arranged close to one side of the interface end 111 and one side of the first water receiving pan 200 at the same time. Compared with the prior art solution in which the sensor is directly arranged on the wall of the air-conditioning housing, the distance from the sensor 400 to the interface end 111 in this solution is shorter. Since the refrigerant mainly leaks from the interface end 111, the arrangement of the sensor 400 near the interface end 111 in this solution can monitor the refrigerant leakage more quickly, thereby ensuring the timeliness of the refrigerant monitoring. In addition, since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be deposited on the lower side at the first water receiving tray 200 due to the influence of gravity. Therefore, the refrigerant concentration at the first water receiving tray 200 is relatively high. The arrangement of the sensor 400 near the first water receiving tray 200 in this solution can ensure the accuracy of the refrigerant monitoring. Therefore, the air handling unit 10 of this solution can effectively improve the reliability of refrigerant monitoring, facilitate relevant personnel to deal with refrigerant leakage in a timely manner, and ensure the continuous normal operation of the air handling unit 10.

[0132] In some embodiments, in order to further describe and understand the specific location of the first drain port 211, a third direction Z is defined. The third direction Z is perpendicular to the first direction X and the second direction Y. Figure 3 The direction is used as a reference, that is, when the first direction X is the front-to-back direction, the second direction Y can be the up-down direction, and the third direction Z can be the left-right direction.

[0133] Reference Figure 4 and Figure 5 , the first drain port 211 is located on one side of the first side plate 210 along the third direction Z. It can be understood that when the third direction Z is the left-right direction, the first drain port 211 can be located on the left side of the first side plate 210 along the left-right direction, or can be located on the right side of the first side plate 210 along the left-right direction. Some embodiments of the present application are described by taking the case where the first drain port 211 is located on the right side of the first side plate 210 along the left-right direction as an example.

[0134] The applicant discovered that since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be affected by gravity and deposited on the lower side at the first water receiving pan 200. Therefore, the refrigerant will gather and flow to the first drain port 211, that is, the refrigerant concentration at the first drain port 211 is higher than the refrigerant concentration at other positions of the first water receiving pan 200. Regardless of where the refrigerant leaks in the heat exchanger 100, the leaked refrigerant will be deposited and flow to the first drain port 211. In this solution, the Z sensor 400 is arranged on one side of the first drain port 211 adjacent to the first water receiving pan 200 along the third direction, that is, the distance from the sensor 400 to the first drain port 211 is shorter. Therefore, the solution arranges the sensor 400 at this position to improve the timeliness and accuracy of refrigerant monitoring and realize the monitoring of multiple positions of the air handling unit.

[0135] Reference Figure 6 , the relative position of the sensor 400 and the first drain port 211 is specifically described below using projection. The first projection plane is defined to be perpendicular to the first direction X. It can be understood that in some embodiments, the first projection plane can be a plane on the air handling unit 10. In other embodiments, the first projection plane can also be a plane outside the air handling unit 10.

[0136] The first drain port 211 forms a first orthographic projection on the first projection plane, and the first orthographic projection forms a closed geometric figure. The sensor 400 forms a second orthographic projection on the first projection plane, and the second orthographic projection forms a closed geometric figure.

[0137] Along the third direction Z, the first orthographic projection at least partially overlaps with the second orthographic projection. It should be noted that in some embodiments, the first orthographic projection may partially overlap with the second orthographic projection. In other embodiments, the first orthographic projection may completely overlap with the second orthographic projection. In this solution, the first orthographic projection overlaps with the second orthographic projection along the third direction Z, that is, when observed along the third direction Z, the first drain outlet 211 and the sensor 400 are at least partially overlapped. In other words, the sensor 400 is arranged near the first drain outlet 211, that is, the distance from the sensor 400 to the first drain outlet 211 is shorter, and since the leaked refrigerant will be deposited and gathered at the first drain outlet 211, it is convenient for the sensor 400 to directly monitor the leaked refrigerant, thereby further improving the timeliness and accuracy of refrigerant detection.

[0138] Reference Figure 7 and Figure 8In some embodiments, the sensor 400 is connected to the first side plate 210. The sensor 400 can be snap-fitted to the first side plate 210, or can be bolted to the first side plate 210, etc. The specific connection method and connection position between the sensor 400 and the first side plate 210 can be determined according to the actual situation. In this solution, the sensor 400 is arranged on the first side plate 210, and since the first side plate 210 is provided with a first drain port 211, the distance from the sensor 400 to the first drain port 211 can be further shortened, thereby ensuring the timeliness and accuracy of the refrigerant detection.

[0139] Reference Figure 7 In some embodiments, the air handling unit 10 further includes a housing 500, which can prevent external moisture or foreign matter such as dust from entering the air handling unit 10 to avoid line failure. The heat exchanger 100 and the first water receiving tray 200 are both arranged in the housing 500. In this solution, the sensor 400 is connected to the inner wall surface of the housing 500, which can prevent external foreign matter from affecting the normal operation of the sensor 400 and ensure the continuous normal operation of the sensor 400.

[0140] Reference Fig.10 In some embodiments, the first water receiving tray 200 defines a water receiving chamber 220. It is understood that the bottom wall surface of the water receiving chamber 220 away from the first drain port 211 may be higher than the bottom wall surface of the water receiving chamber 220 near the first drain port 211, that is, condensed water may flow and gather into the water receiving chamber 220 and be discharged from the first water receiving port 230 of the first water receiving tray 200.

[0141] The sensor 400 is connected to the side wall of the first side plate 210 away from the water receiving chamber 220. The sensor 400 can be arranged at the upper part, the middle part or the lower part of the side wall along the second direction Y. The specific arrangement position of the sensor 400 can be determined according to the actual situation. It can be understood that since condensed water will remain in the water receiving chamber 220, the present solution arranges the sensor 400 at the side wall of the first side plate 210 away from the water receiving chamber 220, which can prevent water from directly entering the sensor 400, prevent the sensor 400 from malfunctioning, and ensure that the sensor 400 can continuously and stably monitor the leakage of refrigerant.

[0142] Reference Fig.12 In some embodiments, the sensor 400 is provided with an opening 410 for obtaining the refrigerant, that is, the refrigerant can contact the identification module of the sensor 400 through the opening 410 to monitor and identify the refrigerant. The opening 410 of the sensor 400 can be set to be circular, square or other polygonal shapes, etc. The specific shape and size of the opening 410 depends on the actual situation.

[0143] The specific arrangement of the opening 410 of the sensor 400 is described below. It should be noted that the first direction X and the second direction Y mentioned below have the same meaning as the directions above, and will not be repeated here. In some embodiments, along the second direction Y, the opening 410 may exceed the edge of the first side plate 210 adjacent to the heat exchanger 100. In other words, the opening 410 of the sensor 400 may protrude from the edge of the first side plate 210, that is, the refrigerant may contact the opening 410 before the first side plate 210 when flowing. Therefore, the sensor 400 can monitor the leaking refrigerant in a shorter time, which can further improve the timeliness of the refrigerant detection. In other embodiments, along the second direction Y, the opening 410 may be flush with the edge of the first side plate 210 adjacent to the heat exchanger 100. In other embodiments, along the second direction Y, the edge of the first side plate 210 adjacent to the heat exchanger 100 may exceed the opening 410. The specific situation may depend on the actual situation. In some embodiments of the present application, an example is given in which the opening 410 exceeds the edge of the first side plate 210 adjacent to the heat exchanger 100 along the second direction Y.

[0144] Along the first direction X, the opening 410 of the sensor 400 is arranged toward the water receiving chamber 220. Compared with the arrangement of the opening 410 of the sensor 400 away from the water receiving chamber 220, the leaked refrigerant can enter the opening 410 along a shorter path, that is, the sensor 400 can monitor and identify the leaked refrigerant in a shorter time, further improving the timeliness of refrigerant monitoring.

[0145] Reference Figure 7 In some embodiments, the coil assembly 110 includes a shunt pipe 112, which is located at the interface end 111 of the coil assembly 110, that is, the shunt pipe 112 is located at one side of the coil assembly 110 along the first direction X. The shunt pipe 112 is used to shunt the refrigerant in the coil assembly 110, so that the refrigerant in multiple locations in the coil assembly 110 can evaporate and cool at the same time, thereby improving the heat exchange efficiency and ensuring the heat exchange effect.

[0146] The specific arrangement of the flow diverter 112 is described below. The flow diverter 112 includes a first flow diverter assembly 1121 located on the side of the sensor 400 away from the water receiving tray. Figure 7 As a reference, the first flow shunt component 1121 can be observed from bottom to top, and at least partially overlaps with the sensor 400. Specifically, in some embodiments, the sensor 400 can partially overlap with the first flow shunt component 1121. In other embodiments, the sensor 400 can also completely overlap with the first flow shunt component 1121. It can be understood that the first flow shunt component 1121 can be arranged at intervals with the sensor 400 along the second direction Y.

[0147] Reference Figures 10 to 14The air handling unit 10 also includes a water retaining portion 600, which can retain water for the sensor 400. Specifically, the water retaining portion 600 is disposed between the first diverter assembly 1121 and the sensor 400, and the specific location of the water retaining portion 600 depends on the structure of the sensor 400. The water retaining portion 600 can obtain condensed water dripping toward the sensor 400 from the first diverter assembly 1121. By disposing the water retaining portion 600 between the first diverter assembly 1121 and the sensor 400, this solution can effectively inhibit condensed water from contacting the sensor 400, prevent condensed water from entering the sensor 400 to cause equipment failure, and extend the service life of the sensor 400.

[0148] Reference Figures 10 to 12 , the relative arrangement relationship between the water retaining portion 600 and the sensor 400 is introduced below. In some embodiments, the water retaining portion 600 can be sleeved on the end of the sensor 400 facing the first diverter assembly 1121. It can be understood that a housing cavity can be provided inside the water retaining portion 600, and the end of the first diverter assembly facing the sensor 400 can be accommodated in the housing cavity to achieve assembly connection. In other embodiments, the water retaining portion 600 can also be detachably connected to the end of the sensor 400 facing the first diverter assembly 1121. Some embodiments of the present application are described by taking the end of the sensor 400 facing the first diverter assembly 1121 as an example in which the water retaining portion 600 is sleeved.

[0149] It can be understood that along the relative arrangement direction of the first diversion component 1121 and the sensor 400, the water retaining portion 600 can completely cover the entire sensor 400, or only cover the end of the sensor 400 facing the first diversion component 1121. Some embodiments of the present application take the water retaining portion 600 completely covering the sensor 400 as an example.

[0150] In this solution, the water retaining part 600 is provided with the sensor 400, that is, the condensed water generated by heat exchange can flow to the water retaining part 600 along the first diversion component 1121 and gather at the water retaining part 600, thereby preventing the condensed water from flowing to the sensor 400 along the first diversion component 1121, thereby improving the waterproof performance, and the water retaining part 600 and the sensor 400 are convenient to install and disassemble, which can ensure the assembly efficiency.

[0151] Reference Figure 12 to Figure 14 In some embodiments, the water retaining portion 600 includes a water guiding end 610, which is used to guide the condensed water in the water retaining portion 600. That is, after the water retaining portion 600 receives the condensed water dripping from the first diversion component 1121 to the sensor 400, the part of the condensed water can be guided out by the water guiding end 610 to prevent the condensed water from overflowing the water retaining portion 600 and flowing toward the sensor 400 and other circuit components.

[0152] The first water receiving tray 200 defines a water receiving chamber 220, and the water receiving chamber 220 can gather and discharge the condensed water generated by the heat exchange through the first drain port 211. It can be understood that the cavity opening of the water receiving chamber 220 faces the heat exchanger 100. Among them, when observed along the second direction Y, the water guide end 610 overlaps with the water receiving chamber 220. In other words, the water guide end 610 and the water receiving chamber 220 are arranged in an overlapping manner along the second direction Y. That is, the condensed water received by the water retaining portion 600 can flow from the water guide end 610 to the water receiving chamber 220 along the second direction Y.

[0153] By setting a water guide end 610, this solution can guide the condensed water collected by the water retaining part 600 to the first water receiving tray 200 and then discharge it, thereby preventing excessive accumulation of condensed water in the water retaining part 600 and overflowing onto the sensor 400 or other circuit components, thereby improving the waterproof performance and ensuring that the sensor 400 can continue to operate normally.

[0154] Reference Figure 7 and Figure 8 In some embodiments, the sensor 400 is connected to the first water receiving tray 200, and a heat insulating portion 420 is provided between the sensor 400 and the first water receiving tray 200. The heat insulating portion 420 may be a sponge or the like. One side of the heat insulating portion 420 is connected to the first water receiving tray 200, and the other side is connected to the sensor 400. It is understood that in some embodiments, the heat insulating portion 420 may be bonded or clamped to the first water receiving tray 200. In other embodiments, the heat insulating portion 420 may be bonded or clamped to the sensor 400, etc., depending on the actual situation. It should be noted that the specific coverage area and coverage thickness of the heat insulating portion 420 may be determined according to the actual situation. By providing the heat insulating portion 420, this solution can effectively suppress the heat transfer of the sensor 400 to the first water receiving tray 200, prevent the sensor 400 from transmitting cold to produce condensed water, improve the waterproof performance of the sensor 400, and further improve the reliability of the refrigerant monitoring of the sensor 400.

[0155] Reference Fig.10 In some embodiments, the air handling unit 10 includes a control component 700. It is understood that the control component 700 may include a control panel and a control unit. The control panel is an interface for a user to interact with the air conditioner. Through the control panel, parameters such as temperature, humidity or wind speed of the air conditioner can be adjusted, and different working modes can be selected. The control unit can receive data from each sensor 400 and perform control according to the set parameters.

[0156] Reference Fig.10 and Fig.11 The air handling unit 10 further includes a wiring harness 800, which is used to supply power to the control component 700 and the sensor 400. Specifically, the wiring harness 800 is electrically connected to the control component 700 and the sensor 400, respectively.

[0157] Along the second direction Y, the control assembly 700 is disposed on the side of the sensor 400 away from the first water receiving tray 200. In other words, the sensor 400 is located between the first water receiving tray 200 and the control assembly 700. Therefore, the condensed water generated by the heat exchange of the heat exchanger 100 can flow to the first water receiving tray 200 without hindrance, that is, the condensed water will not contact the control assembly 700, eliminating the risk of water ingress to the control assembly 700, and ensuring that the air handling unit 10 can continue to operate normally.

[0158] The wiring harness 800 includes a first connection section 810, and the first connection section 810 is connected to the sensor 400. Specifically, one end of the first connection section 810 is electrically connected to the sensor 400, and the other end extends in a direction away from the control component 700 and away from the sensor 400. The specific extension length of the first connection section 810 can be determined according to actual conditions. Fig.11 The orientation in is used as a reference, that is, the end of the first connecting section 810 that is away from the sensor 400 is arranged obliquely downward. In other words, the end of the first connecting section 810 that is away from the sensor 400 is lower than the arrangement position of the sensor 400. Therefore, when the condensed water flows downward along the wiring harness 800 under the influence of gravity, a breakpoint will be formed at the end of the first connecting section 810 that is away from the sensor 400, and the condensed water can flow to the first water receiving tray 200 along the breakpoint, that is, it can prevent the condensed water from flowing along the first connecting section 810 of the wiring harness 800 to the heat exchanger 100, further reducing the risk of water ingress to the sensor 400, improving the waterproof performance, and ensuring that the sensor 400 can continuously and normally monitor the refrigerant.

[0159] Reference Fig.11 In some embodiments, the wiring harness 800 further includes a second connecting segment 820, and the second connecting segment 820 is connected to the control assembly 700. The extension length of the second connecting segment 820 may be equal to or different from the extension length of the first connecting segment 810, depending on the actual situation. Some embodiments of the present application are described by taking the example that the length of the second connecting segment 820 is greater than the length of the first connecting segment 810.

[0160] One end of the second connection segment 820 is electrically connected to the control component 700. Specifically, the second connection segment 820 can be plugged into the control component 700. The other end of the second connection segment 820 is electrically connected to the first connection segment 810. It can be understood that the second connection segment 820 can be arranged integrally with the first connection segment 810 or separately. Some embodiments of the present application take the first connection segment 810 and the second connection segment 820 as an example of an integral arrangement.

[0161] The air handling unit 10 also includes a hook, which is used to fix the wire harness 800 to prevent the wire harness 800 from shaking significantly inside the air handling unit 10, and to ensure the stability of the connection between the wire harness 800, the control component 700 and the sensor 400. The specific structure of the hook depends on the actual situation. The hook is connected to the heat exchanger 100. It can be understood that the hook can be detachably connected to the heat exchanger 100. When the clamping part of the hook is loose, so that the stability of the connection between the hook and the wire harness 800 deteriorates, the hook can be replaced in time. When multiple wire harnesses 800 need to be tightened at the same time, a large-sized hook can also be replaced to ensure the tightness of the clamping of the multiple wire harnesses 800. It should be noted that a single hook can be set, or multiple hooks can be set.

[0162] Reference Fig.11 , the specific arrangement of the wire harness 800 and the hook is described below. The hook is connected to the junction 830 of the first connecting section 810 and the second connecting section 820, that is, the first connecting section 810 and the second connecting section 820 can be arranged at a specific position, which can optimize the internal layout of the air handling unit 10 on the one hand, and can form a stable water flow breakpoint at the end of the first connecting section 810 away from the sensor 400 on the other hand, preventing condensed water from flowing along the first connecting section 810 of the wire harness 800 to the sensor 400, thereby improving the waterproof performance and ensuring the reliability of the monitoring of the sensor 400.

[0163] Reference Figure 7 and Fig. 9 The air handling unit 10 of the embodiment of the present application can be installed vertically (vertically arranged along the second direction Y) or horizontally (vertically arranged along the third direction Z), and can be adapted to a variety of application scenarios. Due to the different installation methods of the air handling unit 10, there will also be differences in the position setting of the water receiving tray of the air handling unit 10. In some embodiments, the air handling unit 10 is equipped with a second water receiving tray 300 to cope with different installation methods of the air handling unit 10. It can be understood that the second water receiving tray 300 has the same function as the first water receiving tray 200.

[0164] Reference Figure 7 It should be noted that in some embodiments, when the air handling unit 10 is installed vertically, the condensed water can be collected by the first water receiving tray 200. Fig. 9 In other embodiments, when the air handling unit 10 is installed horizontally, the condensed water can be collected by the second water receiving tray 300. It can be understood that the first water receiving tray 200 or the second water receiving tray 300 needs to be located at the lower part of the air handling unit 10 in the vertical direction when collecting water.

[0165] In order to facilitate description and understanding of the arrangement position of the second water receiving tray 300 relative to the heat exchanger 100, a third direction Z is defined. The third direction Z here has the same direction as the third direction Z mentioned above, and will not be repeated here. The third direction Z is perpendicular to the first direction X and the second direction Y. Figure 7 Taking the orientation of as a reference, the first direction X may be a front-to-back direction, the second direction Y may be an up-down direction, and the third direction Z may be a left-right direction.

[0166] The specific location of the second water receiving tray 300 is described below. The second water receiving tray 300 is disposed on one side of the heat exchanger 100 along the third direction Z. Figure 7 As a reference (the air handling unit 10 is installed vertically), the second water receiving tray 300 can be arranged on the left side of the heat exchanger 100 along the left-right direction, or on the right side of the heat exchanger 100 along the left-right direction. Some embodiments of the present application are described by taking the second water receiving tray 300 being arranged on the right side of the heat exchanger 100 along the left-right direction as an example. It can be understood that when the air handling unit 10 is installed horizontally, the second water receiving tray 300 is located at the lower side of the air handling unit 10 along the vertical direction.

[0167] This solution provides a second water receiving tray 300, that is, no matter the air handling unit 10 is vertically installed along the second direction Y or the third direction Z, there is a water receiving tray to hold condensed water, which can ensure the waterproof performance of the air handling unit 10 and expand the application range of the air handling unit 10.

[0168] Reference Figure 7 When the air handling unit 10 is installed vertically along the second direction Y, the leaked refrigerant is deposited and gathered in the first water receiving tray 200. Fig. 9 When the air handling unit 10 is installed vertically along the third direction Z, the leaked refrigerant is deposited and gathered in the second water receiving pan 300. In some embodiments, the first drain port 211 is disposed on the side of the first side plate 210 adjacent to the second water receiving pan 300, and because the first drain port 211 is disposed on the side of the first side plate 210 adjacent to the first water receiving pan 200, the first drain port 211 is disposed adjacent to both the first water receiving pan 200 and the second water receiving pan 300. Therefore, regardless of whether the air handling unit 10 is installed vertically or horizontally, the sensor 400 can monitor the leaked refrigerant in a timely and accurate manner, thereby ensuring the reliability of the sensor 400 in monitoring the refrigerant.

[0169] In some embodiments, the second water receiving tray 300 includes a second side plate 310, and the second side plate 310 and the first side plate 210 are located on the same side along the first direction X in the air handling unit 10. Fig.10With reference to the orientation in the figure, when the first side plate 210 is the side plate on the front side of the first water receiving tray 200 along the front-to-back direction, the second side plate 310 may be the side plate close to the front side of the second water receiving tray 300 along the front-to-back direction. When the first side plate 210 is the side plate on the rear side of the first water receiving tray 200 along the front-to-back direction, the second side plate 310 may be the side plate close to the rear side of the second water receiving tray 300 along the front-to-back direction. Some embodiments of the present application are described by taking the former (the first side plate 210 is the front side plate of the first water receiving tray 200, and the second side plate 310 is the front side plate of the second water receiving tray 300) as an example.

[0170] Reference Fig.11 , the second side plate 310 is provided with a second drain outlet 311. The setting of the second drain outlet 311 may be the same as or different from the first drain outlet 211. The second drain outlet 311 may be provided singly or in plurality. Some embodiments of the present application are described by taking the first drain outlet 211 and the second drain outlet 311 as having the same setting, and both having two as an example. It can be understood that the second drain outlet 311 may be provided on the lower side of the second side plate 310 along the depth direction of its water receiving chamber 220 to ensure the removal effect of condensed water in the second water receiving tray 300.

[0171] This solution sets a second drain port 311 on the second side plate 310 to facilitate timely discharge of condensed water in the second water receiving tray 300, prevent condensed water from overflowing from the water receiving chamber 220 of the second water receiving tray 300 and entering the internal circuit of the air handling unit 10, and ensure that the air handling unit 10 can continue to operate normally.

[0172] The specific location of the second drain port 311 on the second water receiving tray 300 is described below. In some embodiments, the second drain port 311 is located on a side of the second side plate 310 adjacent to the first water receiving tray 200 along the second direction Y. Fig.10 The direction in is used as a reference, and the second direction Y is the up-down direction, that is, the second drain port 311 is located on the side of the second side plate 310 adjacent to the first water receiving pan 200 along the up-down direction. Since the first drain port 211 is located on the side of the first side plate 210 adjacent to the second water receiving pan 300. Therefore, it can be understood that the sensor 400 is arranged adjacent to the first drain port 211 and the second drain port 311, that is, no matter what installation method the air handling unit 10 adopts, the sensor 400 can timely and accurately monitor the refrigerant deposited and gathered at the first drain port 211 or the second drain port 311, thereby ensuring the reliability of refrigerant monitoring.

[0173] The relative position of the sensor 400 and the second drain port 311 is described in detail below using projection. The second projection plane is defined to be perpendicular to the third direction Z. Fig.10The third direction Z may refer to the left and right direction. It can be understood that in some embodiments, the second projection plane may be a plane on the air handling unit 10. In other embodiments, the second projection plane may also be a plane outside the air handling unit 10.

[0174] The second drain port 311 forms a third orthographic projection on the second projection plane, and the third orthographic projection forms a closed geometric figure. The sensor 400 forms a fourth orthographic projection on the second projection plane, and the fourth orthographic projection forms a closed geometric figure.

[0175] Along the first direction X, the third orthographic projection at least partially overlaps with the fourth orthographic projection. In some embodiments, the third orthographic projection may partially overlap with the fourth orthographic projection. In other embodiments, the third orthographic projection may completely overlap with the fourth orthographic projection. In this solution, the third orthographic projection overlaps with the fourth orthographic projection along the first direction X, that is, when observed along the first direction X, the second drain port 311 and the sensor 400 are at least partially overlapped. That is, the distance from the sensor 400 to the second drain port 311 is shorter, and because the leaked refrigerant will be deposited and gathered at the second drain port 311, the sensor 400 can detect the leaked refrigerant faster and more accurately, thereby ensuring the reliability of the refrigerant detection of the sensor 400.

[0176] Reference Figure 7 In some embodiments, the coil assembly 110 includes a shunt pipe 112, which is located at the interface end 111 of the coil assembly 110. The shunt pipe 112 is used to shunt the refrigerant in the coil assembly 110, so that the refrigerant in multiple locations in the coil assembly 110 evaporates and cools at the same time, thereby improving the heat exchange efficiency and ensuring the heat exchange effect.

[0177] The flow dividing pipe 112 includes a first flow dividing component 1121. The first flow dividing component 1121 is located on the side of the sensor 400 away from the water receiving tray. Figure 7 As a reference, the first flow diversion component 1121 can be observed from top to bottom, and at least partially overlaps with the sensor 400. It should be noted that the sensor 400 can partially overlap with the first flow diversion component 1121, or can completely overlap with the first flow diversion component 1121. It can be understood that the first flow diversion component 1121 can be arranged at intervals from the sensor 400 along the second direction Y.

[0178] The flow dividing pipe 112 further includes a second flow dividing component 1122. Along the third direction Z, the second flow dividing component 1122 is located on the side of the sensor 400 away from the second water receiving tray 300. When the third direction Z refers to the left-right direction, that is, when viewed from left to right, the sensor 400 is located between the second flow dividing component 1122 and the second water receiving tray 300. It can be understood that by adding the second flow dividing component 1122, the flow dividing effect can be further enhanced.

[0179] The spatial arrangement relationship between the sensor 400, the first flow diversion component 1121, and the second flow diversion component 1122 is described below. When viewed along the third direction Z, the sensor 400 and the second flow diversion component 1122 do not overlap. When the third direction Z refers to the left-right direction, that is, when viewed from left to right, the sensor 400 and the second flow diversion component 1122 have no overlapping parts.

[0180] In this solution, when observing along the second direction Y, the first diverter component 1121 overlaps with the sensor 400, and when observing along the third direction Z, the sensor 400 does not overlap with the second diverter component 1122, that is, the first diverter component 1121, the second diverter component 1122 and the sensor 400 are arranged in a spatially staggered manner, which can effectively prevent condensed water from dripping from the first diverter component 1121 to the second diverter component 1122 and then flowing from the second diverter component 1122 to the sensor 400, eliminate the risk of water ingress into the sensor 400, ensure that the sensor 400 can continuously and normally monitor the refrigerant, and further improve the reliability of the monitoring of the sensor 400.

[0181] Reference Figure 26 to Figure 32 In another embodiment of the present invention, a water tray assembly 101 is provided. The water tray assembly 101 can be used in an air handling unit 10. It should be noted that the air handling unit 10 can be an indoor unit of an air conditioner or an outdoor unit of an air conditioner. The specific details can be determined according to the actual situation. In the embodiment of the present application, the air handling unit 10 is taken as an indoor unit of an air conditioner for example. It can be understood that the air handling unit 10 includes a heat exchanger 100. The heat exchanger 100 is used for heat exchange with external air. Fig.28 The heat exchanger 100 includes a coil assembly 110, which is used to conduct refrigerant. The refrigerant circulates inside the coil assembly 110 and evaporates or condenses adaptively to cool or heat the air. Specifically, when the air conditioner is cooling, the refrigerant evaporates and absorbs heat in the coil assembly 110 of the indoor unit, thereby absorbing indoor heat and lowering the indoor temperature. When the air conditioner is heating, the refrigerant condenses and releases heat in the coil assembly 110 of the indoor unit, thereby releasing heat indoors and increasing the indoor temperature. The specific configuration of the heat exchanger 100 can refer to the relevant known technology.

[0182] It should be noted that the refrigerant in the embodiments of the present application can be a combustible refrigerant or a non-combustible refrigerant. Some embodiments of the present application are described by taking the refrigerant as a combustible refrigerant as an example. The combustible refrigerant can be R32 or R454B, etc. The specific setting of the refrigerant can refer to the relevant known technology. The water receiving tray assembly 101 of the embodiment of the present invention is described in detail below. Specifically, the water receiving tray assembly 101 includes a first water receiving tray 200 and a sensor 400.

[0183] Reference Figure 26 to Figure 28The first water receiving tray 200 is used to hold the condensed water generated by the operation of the heat exchanger 100 when the air handling unit 10 is working. The outer contour of the first water receiving tray 200 can be annular, which can be determined according to the actual structure of the heat exchanger 100. The first water receiving tray 200 has a water receiving chamber 220, and the water receiving chamber 220 can be set to be single or multiple. Some embodiments of the present application are described by setting two water receiving chambers 220 as an example. It can be understood that the condensed water generated by the heat exchange of the heat exchanger 100 can flow and converge into the water receiving chamber 220 to prevent moisture from entering the circuit in the air handling unit 10 and causing malfunctions.

[0184] Reference Fig.26 , the first water receiving tray 200 also includes a water receiving port 230. The water receiving port 230 may be annular, elliptical or elongated, etc., depending on the structure of the heat exchanger 100. Some embodiments of the present application are described by taking the water receiving port 230 as an example. It can be understood that the water receiving port 230 is connected to the water receiving chamber 220, that is, the condensed water generated by the heat exchange of the heat exchanger 100 can flow from the water receiving port 230 into the water receiving chamber 220.

[0185] The positional relationship between the water receiving port 230 and the first water receiving tray 200 is described in detail below. The water receiving port 230 is located on one side of the first water receiving tray 200 along the first direction X. Fig.26 As a reference, in some embodiments, the first direction X may be an up-down direction, and the water receiving port 230 is located at the upper side or the lower side of the first water receiving tray 200 along the up-down direction. In other embodiments, the first direction X may be a left-right direction, and the water receiving port 230 is located at the left side or the right side of the first water receiving tray 200 along the left-right direction. In other embodiments, the first direction X may be a front-to-back direction, and the water receiving port 230 is located at the front side or the rear side of the first water receiving tray 200 along the front-to-back direction. Some embodiments of the present application are described by taking the example that the first direction X points to the up-down direction, and the water receiving port 230 is located at the lower side of the first water receiving tray 200 along the up-down direction.

[0186] The first water receiving tray 200 is provided with a first drain port 211, that is, the condensed water in the first water receiving tray 200 can be discharged from the air handling unit 10 through the first drain port 211. The specific setting position of the first drain port 211 on the first water receiving tray 200 is introduced below, and the first water receiving tray 200 is defined as having a first side plate 210, and the first side plate 210 is a side plate of the first water receiving tray 200 along the second direction Y, and the second direction Y is perpendicular to the first direction X. Fig.26In some embodiments, when the first direction X is the up-down direction, the second direction Y may be the left-right direction, that is, the first side plate 210 may be the left side plate of the first water receiving tray 200 along the left-right direction, or the right side plate of the first water receiving tray 200 along the left-right direction. In other embodiments, when the first direction X is the up-down direction, the second direction Y may also be the front-back direction, that is, the first side plate 210 may be the front side plate of the first water receiving tray 200 along the front-back direction, or the rear side plate of the first water receiving tray 200 along the front-back direction. Some embodiments of the present application are described by taking the first direction X indicating the up-down direction and the second direction Y indicating the left-right direction as an example.

[0187] Reference Fig.28 , the first side plate 210 is provided with a first drain port 211 connected to the water receiving chamber 220. The first drain port 211 can be set to a variety of shapes. Specifically, the first drain port 211 can be set to a circular, square, trapezoidal or triangular shape, etc., depending on the actual situation. Some embodiments of the present application are described by setting the first drain port 211 to be circular as an example. In some embodiments, the first drain port 211 can be set to be single. In other embodiments, the first drain port 211 can be multiple. Some embodiments of the present application are described by setting two first drain ports 211 as an example. It can be understood that the first drain port 211 can be provided on the lower side of the first side plate 210 along the first direction X to ensure the removal effect of the condensed water in the first water receiving tray 200, and to avoid the situation where too much condensed water remains in the first water receiving tray 200 and the condensed water evaporates and enters the internal circuit of the air handling unit 10.

[0188] Reference Fig.26 The water tray assembly 101 further includes a sensor 400, which is used to detect the refrigerant leaking from the heat exchanger 100. That is, when the refrigerant in the heat exchanger 100 leaks, the sensor 400 can monitor this abnormal situation and feedback it to the controller and relevant personnel, so that the relevant personnel can deal with the leakage in time, ensure the heat exchange effect of the heat exchanger 100, and eliminate related safety hazards. The specific setting of the sensor 400 can refer to the relevant known technology.

[0189] The sensor 400 is connected to the wall of the first water receiving tray 200 away from the water receiving chamber 220, which can prevent the condensed water in the water receiving chamber 220 from contacting the sensor 400, thereby ensuring the waterproof effect of the sensor 400. It should be noted that the outer wall of the first water receiving tray 200 away from the water receiving chamber 220 can be the wall of the first side plate 210 away from the water receiving chamber 220 and the walls connected to the wall along the outer circumference of the first water receiving tray 200 (refer to Fig.26 , there are 4 outer walls), or the wall of the third side plate 270 away from the water receiving chamber 220 and the walls connected to the wall along the inner circumference of the first water receiving tray 200 (refer to Fig.26 , there are 4 outer walls), or the bottom walls of the two tanks of the first water receiving tray 200 away from the water receiving cavity 220. The specific direction of the outer wall can be determined according to the actual situation.

[0190] by Fig.26 In some embodiments, the sensor 400 may be disposed on a wall of the first water receiving tray 200 that is away from the water receiving cavity 220 and close to the outside. In other embodiments, the sensor 400 may be disposed on a wall of the first water receiving tray 200 that is away from the water receiving cavity 220 and close to the inside. Some embodiments of the present application are described by taking the example that the sensor 400 is disposed on a wall of the first water receiving tray 200 that is away from the water receiving cavity 220 and close to the inside.

[0191] The meaning of "along the second direction Y, the sensor 400 is located on one side of the first side plate 210 of the first water receiving tray 200" is defined as follows: the plane perpendicular to the second direction Y is the first plane a, and the distances from the two opposite outermost end points of the first water receiving tray 200 along the second direction Y to the first plane a are equal. Along the second direction Y, the sensor 400 is located on the side of the first plane a facing the first side plate 210.

[0192] It can be seen from the above definition that when the sensor 400 is located on the side of the first plane a away from the first side plate 210 , along the first direction X, the sensor 400 is disposed on the side of the first water receiving tray 200 away from the first side plate 210 .

[0193] In the technical solution of the present invention, the water receiving tray assembly 101 includes a first water receiving tray 200 and a sensor 400. The first water receiving tray 200 includes a water receiving chamber 220 and a water receiving port 230. The sensor 400 is connected to the wall of the first water receiving tray 200 away from the water receiving chamber 220, that is, it can avoid the condensed water contained in the water receiving chamber 220 from contacting the sensor 400, and prevent the risk of water ingress to the sensor 400. Compared with the solution in the prior art in which the sensor is directly arranged on the wall of the air-conditioning housing, in this solution, along the second direction Y, the sensor 400 is located on one side of the first side plate 210 of the first water receiving tray 200, that is, the sensor 400 is arranged adjacent to the first side plate 210, and the first side plate 210 is provided with a first drain port 211 connected to the water receiving chamber 220, that is, the sensor 400 of this solution is arranged adjacent to the first drain port 211. Since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will be deposited downward at the first water receiving pan 200 under the influence of gravity, and will gather and flow to the first drain port 211. Therefore, the sensor 400 of this solution can effectively improve the reliability of refrigerant monitoring, facilitate relevant personnel to deal with refrigerant leakage in a timely manner, and ensure the continuous normal operation of the air handling unit 10.

[0194] The following specifically describes the location of the sensor 400 on the first water receiving tray 200. In some embodiments, along the first direction X, the first water receiving tray 200 is provided with a bottom wall 240 opposite to the water receiving port 230. Fig.26 , that is, along the up-down direction, the first water receiving tray 200 is provided with a bottom wall 240 opposite to the water receiving port 230. Specifically, when the water receiving port 230 is located on the upper side of the first water receiving tray 200 along the up-down direction, the bottom wall 240 can be the lower side of the first water receiving tray 200 along the up-down direction. It can be understood that the bottom wall 240 can be the wall surface on the outside of the first water receiving tray 200 opposite to the water receiving port 230, or can be the wall surface on the inside of the first water receiving tray 200 opposite to the water receiving port 230. Some embodiments of the present application are described by taking the bottom wall 240 as the wall surface on the outside of the first water receiving tray 200 opposite to the water receiving port 230 as an example.

[0195] The meaning of “along the first direction X, the sensor 400 is located between the water inlet 230 and the bottom wall 240 ” is explained below, that is, when observed in a direction perpendicular to the first direction X, the water inlet 230 is located on one side of the sensor 400 , and the bottom wall 240 is located on the other side of the sensor 400 away from the water inlet 230 .

[0196] In some embodiments, the sensor 400 may be located at a position on one side of the first water receiving tray 200 close to the bottom wall 240. In other embodiments, the sensor 400 may also be located at a position of the first water receiving tray 200 away from the bottom wall 240. In other embodiments, the sensor 400 may also be located in the middle of the bottom wall 240 and the water receiving port 230 of the first water receiving tray 200 as an example. Some embodiments of the present application are described by taking the position of the sensor 400 located at a side of the first water receiving tray 200 close to the bottom wall 240 as an example.

[0197] In this solution, along the first direction X, the sensor 400 is located between the water inlet 230 and the bottom wall 240 , which can avoid interference between the sensor 400 and other components in the air handling unit 10 , optimize the spatial layout of the air handling unit 10 , and prevent condensed water from entering the sensor 400 .

[0198] Reference Fig.26 and Fig. 27 In some embodiments, the first water receiving tray 200 further defines an air duct 250, which is an air flow channel for the air handling unit 10 to exchange air with the outside air. It is understood that the air duct 250 can be provided with a plurality of air outlets to ensure the air flow exchange effect of the air handling unit 10. It should be noted that the air duct 250 can be provided with a filter assembly, which can inhibit large-volume external impurities from entering the air handling unit 10, extend the service life of the air handling unit 10, and ensure the continuous normal operation of the air handling unit 10.

[0199] The relative positional relationship between the water receiving chamber 220 and the air duct 250 is introduced below. Specifically, the water receiving chamber 220 is arranged around the air duct 250. It can be understood that the water receiving chamber 220 can be arranged partially around the air duct 250, or it can be arranged completely around the air duct 250. Some embodiments of the present application are described by taking the arrangement of the water receiving chamber 220 completely around the air duct 250 as an example. The first water receiving tray 200 also includes an inner peripheral wall surface 260, and the inner peripheral wall surface 260 is the wall surface of the first water receiving tray 200 close to the side of the water receiving chamber 220, and the inner peripheral wall surface 260 can be connected to the bottom wall 240 of the first water receiving tray 200. It should be noted that the inner peripheral wall surface 260 can define the air duct 250.

[0200] In this solution, the sensor 400 is connected to the inner wall 260 of the air duct 250, that is, the sensor 400 is arranged near the air duct 250. Compared with the solution in which the sensor is arranged inside the air duct, on the one hand, the sensor 400 of this solution will not hinder the circulation of gas, and can ensure the normal gas exchange inside the air handling unit 10. On the other hand, this solution can also prevent the circulating gas from disturbing the leakage of refrigerant, thereby ensuring the reliability of the sensor 400 in monitoring the leakage of refrigerant.

[0201] The following specifically describes the location of the sensor 400 on the first water receiving tray 200. In some embodiments, the first water receiving tray 200 further includes a third side plate 270. The third side plate 270 is arranged opposite to the first side plate 210 along the second direction Y and spaced apart. Fig.26 As a reference, when the first direction X points to the up-down direction and the second direction Y points to the left-right direction, the third side plate 270 and the first side plate 210 are arranged opposite to each other in the left-right direction and spaced apart. Specifically, the first side plate 210 may be a side plate close to the left side of one end of the first water receiving tray 200 in the left-right direction, and the third side plate 270 may be a side plate close to the right side of one end of the first water receiving tray 200 in the left-right direction. It should be noted that the air duct 250 may be located between the first side plate 210 and the third side plate 270, that is, the specific spacing between the first side plate 210 and the third side plate 270 may determine the spatial volume of the air duct 250.

[0202] The first water receiving tray 200 further includes a fourth side plate 280. To facilitate description and understanding of the positional relationship between the fourth side plate 280 and the third side plate 270, a third direction Z is defined. The fourth side plate 280 is located on one side of the third side plate 270 along the third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y. Fig.26In some embodiments, when the first direction X points to the up-down direction, the second direction Y may point to the left-right direction, and the third direction Z may point to the front-back direction, that is, the fourth side plate 280 may be a side plate located near the front side of the third side plate 270 along the front-back direction, or may be a side plate located near the rear side of the third side plate 270 along the front-back direction. Some embodiments of the present application are described by taking the fourth side plate 280 as a side plate located near the rear side of the third side plate 270 along the front-back direction as an example.

[0203] One end of the fourth side plate 280 along the second direction Y is connected to one end of the third side plate 270 along the third direction Z. Fig.26 The orientation in is used as a reference, that is, one end of the left side of the fourth side plate 280 along the left-right direction can be connected to one end of the rear side of the third side plate 270 along the front-back direction.

[0204] The sensor 400 is connected to the wall of the fourth side plate 280 away from the water receiving chamber 220. It can be understood that the sensor 400 can be arranged on the wall of the fourth side plate 280 away from the water receiving chamber 220 close to the outside, or can be arranged on the wall of the fourth side plate 280 away from the water receiving chamber 220 close to the inside. Some embodiments of the present application are described by taking the example of the sensor 400 being arranged on the wall of the fourth side plate 280 away from the water receiving chamber 220 close to the outside.

[0205] In this solution, the sensor 400 is connected to the wall of the fourth side plate 280 facing away from the water receiving chamber 220. On the one hand, it can prevent condensed water in the water receiving chamber 220 from entering the sensor 400 and causing malfunctions, thereby extending the service life of the sensor 400. On the other hand, it can enable the sensor 400 to be located inside the first water receiving tray 200 along a direction perpendicular to the first direction X, thereby optimizing the overall spatial layout of the air handling unit 10.

[0206] The meaning of "along the third direction Z, the first drain port 211 is located on the side of the first side plate 210 adjacent to the fourth side plate 280" is defined as follows: the plane perpendicular to the third direction Z is the second plane b, and the distances from the two opposite outermost end points of the first side plate 210 along the third direction Z to the second plane b are equal. Along the third direction Z, the first drain port 211 is located on the side of the second plane b facing the fourth side plate 280.

[0207] It can be seen from the above definition that when the first drain port 211 is located on the side of the second plane b away from the fourth side plate 280, along the third direction Z, the first drain port 211 is located on the side of the first side plate 210 away from the fourth side plate 280. Fig.26 With reference to the direction in , when the third direction Z points to the front-to-back direction, that is, along the front-to-back direction, the first drain port 211 is located on a side of the first side plate 210 adjacent to the fourth side plate 280 .

[0208] In the present solution, since the fourth side plate 280 is connected to the third side plate 270, the third side plate 270 is opposite to the first side plate 210, and the first drain port 211 is arranged on the first side plate 210, along the third direction Z, the first drain port 211 is located on the side of the first side plate 210 adjacent to the fourth side plate 280. That is, it can be understood that the sensor 400 of the present solution is arranged adjacent to the first drain port 211, so that the sensor 400 can timely monitor the leaked refrigerant deposited and gathered at the first drain port 211, thereby further improving the reliability of refrigerant monitoring.

[0209] The specific arrangement of the water receiving chamber 220 is described below. In some embodiments, along the first direction X, the first water receiving tray 200 is provided with a bottom wall 240 opposite to the water receiving port 230. Fig.29 As a reference, when the first direction X indicates the up-down direction, the water receiving port 230 is located on the upper side of the first water receiving tray 200 along the up-down direction, and the bottom wall 240 is the wall surface of the lower side of the first water receiving tray 200 along the up-down direction. Specifically, the bottom wall 240 can be the wall surface of the lower side of the first water receiving tray 200 close to the outer side along the up-down direction.

[0210] by Fig.30 As a reference, along the direction from the bottom wall 240 to the water receiving port 230, that is, along the direction from bottom to top, the cross-sectional area of ​​the water receiving chamber 220 along the direction perpendicular to the first direction X gradually increases. It can be understood that the cross-sectional area of ​​the water receiving port 230 side of the water receiving chamber 220 is greater than the cross-sectional area of ​​the bottom wall 240 side, thereby improving the water receiving rate of the first water receiving tray 200 and reducing the situation where condensed water flows into the outside of the water receiving chamber 220. It should be noted that the cross-sectional area of ​​the water receiving chamber 220 along the direction perpendicular to the first direction X can be increased uniformly or non-uniformly. Some embodiments of the present application are described by taking the cross-sectional area of ​​the water receiving chamber 220 along the direction perpendicular to the first direction X as an example.

[0211] The specific configuration of the inner peripheral wall 260 is described below. The inner peripheral wall 260 can define the air duct 250, and the inner peripheral wall 260 has a central axis parallel to the first direction X. Fig.30 The direction in is used as a reference, that is, the inner peripheral wall surface 260 has a central axis parallel to the up-down direction. In the direction from the bottom wall 240 to the water inlet 230, the distance between the inner peripheral wall surface 260 and the central axis gradually decreases, that is, the inner peripheral wall surface 260 of this solution is arranged obliquely. The inclined inner peripheral wall surface 260 can provide space for the sensor 400 to be arranged, so that the sensor 400 does not occupy too much horizontal space, and the spatial arrangement of the air handling unit 10 is optimized.

[0212] Reference Fig.30In some embodiments, a heat insulating portion 420 is further provided between the sensor 400 and the first water receiving tray 200, and the heat insulating portion 420 may be a sponge or the like. One side of the heat insulating portion 420 is connected to the first water receiving tray 200, and the other side is connected to the sensor 400. It can be understood that in some embodiments, the heat insulating portion 420 may be bonded or clamped to the first water receiving tray 200. In other embodiments, the heat insulating portion 420 may be bonded or clamped to the sensor 400, etc., depending on the actual situation. It should be noted that the specific coverage area and coverage thickness of the heat insulating portion 420 may be determined according to the actual situation. By providing the heat insulating portion 420, this solution can effectively suppress the heat transfer of the sensor 400 to the first water receiving tray 200, prevent the sensor 400 from transmitting cold to produce condensed water, improve the waterproof performance of the sensor 400, and further improve the reliability of the refrigerant monitoring of the sensor 400.

[0213] Reference Fig.29 and Fig.30 The embodiment of the present invention provides an air handling unit 10, which includes a water receiving tray assembly 101 as described in the above embodiment, and also includes a heat exchanger 100. Specifically, the heat exchanger 100 is arranged on one side of the first water receiving tray 200 along the first direction X. Fig.29 In some embodiments, when the first direction X is the up-down direction, the heat exchanger 100 can be arranged on the upper side of the first water receiving pan 200 along the up-down direction, or on the lower side of the first water receiving pan 200 along the up-down direction. In other embodiments, when the first direction X is the left-right direction, the heat exchanger 100 can be arranged on the left side of the first water receiving pan 200 along the left-right direction, or on the right side of the first water receiving pan 200 along the left-right direction. In other embodiments, when the first direction X is the front-back direction, the heat exchanger 100 can also be arranged on the front side of the first water receiving pan 200 along the front-back direction, or on the rear side of the first water receiving pan 200 along the front-back direction. Some embodiments of the present application are described by taking the first direction X as the up-down direction and the heat exchanger 100 being arranged on the upper side of the first water receiving pan 200 along the up-down direction as an example. It should be noted that in order to facilitate the first water receiving tray 200 to directly receive the condensed water of the heat exchanger 100, when the heat exchanger 100 is not arranged on the upper side of the first water receiving tray 200 in the up and down direction, the position of the air handling unit 10 itself should be adjusted when installing the air handling unit 10 so that the heat exchanger 100 is on the upper side of the first water receiving tray 200 in the up and down direction, so that the first water receiving tray 200 can effectively receive the condensed water dripping along the up and down direction.

[0214] It should be noted that the air handling unit 10 of the embodiment of the present application can be installed vertically (vertically arranged along the first direction X) or horizontally (vertically arranged along the second direction Y), so that the air handling unit 10 can be adapted to a variety of application scenarios. Due to the different installation methods of the air handling unit 10, there will also be differences in the position setting of the water receiving tray of the air handling unit 10. In some embodiments, the air handling unit 10 is equipped with a second water receiving tray 300 to cope with different installation methods of the air handling unit 10. It can be understood that the second water receiving tray 300 has the same function as the first water receiving tray 200.

[0215] Reference Fig.31 It should be noted that in some embodiments, when the air handling unit 10 is installed vertically, the condensed water can be collected by the first water receiving tray 200. Fig.32 In other embodiments, when the air handling unit 10 is installed horizontally, the condensed water can be collected by the second water receiving tray 300. It can be understood that the first water receiving tray 200 or the second water receiving tray 300 needs to be located at the lower part of the air handling unit 10 in the vertical direction when collecting water, so as to collect the condensed water dripping from the heat exchanger 100.

[0216] In order to facilitate description and understanding of the arrangement position of the second water receiving tray 300 relative to the heat exchanger 100, a fourth direction V is defined, and the second water receiving tray 300 is arranged on one side of the first water receiving tray 200 along the fourth direction V, and the fourth direction V is perpendicular to the first direction X. It should be noted that the fourth direction V can be any direction perpendicular to the first direction X, that is, the direction of the fourth direction V can be the same as the direction of the second direction Y or the third direction Z mentioned in other embodiments. Some embodiments of the present application are described by taking the fourth direction V and the third direction Z as the same as an example. Fig.28 In some embodiments, when the first direction X indicates the up-down direction, the fourth direction V may indicate the front-to-back direction, that is, the second water receiving tray 300 is arranged at the front side of the first water receiving tray 200 along the front-to-back direction, or at the rear side of the first water receiving tray 200 along the front-to-back direction. In other embodiments, when the first direction X indicates the up-down direction, the fourth direction V may also indicate the left-to-right direction, that is, the second water receiving tray 300 is arranged at the left side of the first water receiving tray 200 along the left-to-right direction, or at the right side of the first water receiving tray 200 along the left-to-right direction. In some embodiments of the present application, the first direction X indicates the up-down direction, and the second water receiving tray 300 is arranged at the right side of the first water receiving tray 200 along the left-to-right direction. It can be understood that when the air handling unit 10 is installed horizontally, the second water receiving tray 300 should be at the lower side of the air handling unit 10 in the vertical direction.

[0217] This solution provides a second water receiving tray 300, that is, no matter the air handling unit 10 is vertically installed along the first direction X (vertical installation) or vertically installed along the second direction Y (horizontal installation), there is a water receiving tray for holding condensed water, that is, the waterproof performance of the air handling unit 10 can be guaranteed, and it is adapted to various application scenarios of the air handling unit 10.

[0218] Reference Fig.28 In some embodiments, the second water receiving tray 300 is provided with a second drain port 311. The second drain port 311 may be provided in the same manner as the first drain port 211 or may be different. The second drain port 311 may be provided in a single manner or in a plurality. Some embodiments of the present application are described by taking the first drain port 211 and the second drain port 311 as having the same settings and two of each as an example. It can be understood that the second drain port 311 may be provided on the lower side of the second water receiving tray 300 along the depth direction of its water receiving chamber 220 to ensure the removal effect of the condensed water in the second water receiving tray 300. By providing the second drain port 311, this solution facilitates the timely discharge of the condensed water in the second water receiving tray 300, prevents the condensed water from overflowing the water receiving chamber 220 of the second water receiving tray 300 and entering the internal circuit components of the air handling unit 10, and ensures that the air handling unit 10 can continue to operate normally.

[0219] The specific setting position of the second drain port 311 on the second water receiving tray 300 is introduced below. Specifically, along the second direction Y, the second drain port 311 and the first drain port 211 are located on the same side in the air handling unit 10. That is, the sensor 400 can be arranged near the first drain port 211 and the second drain port 311 at the same time, that is, when the air handling unit 10 is vertically installed along the first direction X or vertically installed along the fourth direction V, the sensor 400 can timely and accurately monitor the refrigerant deposited and gathered in the first drain port 211 or the second drain port 311, thereby ensuring the reliability of refrigerant monitoring.

[0220] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0221] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0222] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An air handling unit, characterized in that: include: Heat exchanger; A first water receiving tray, disposed on one side of the heat exchanger along the first direction, and located below the heat exchanger when the air handling unit is placed vertically along the first direction, for containing condensed water dripping from the heat exchanger; a second water receiving tray, disposed on one side of the heat exchanger along a second direction and located below the heat exchanger when the air handling unit is placed vertically along the second direction, for receiving condensed water dripping from the heat exchanger, the first direction being perpendicular to the second direction; A sensor for detecting refrigerant leakage from the heat exchanger; Wherein, along the first direction, the sensor is located on a side of the heat exchanger adjacent to the first water receiving tray, and along the second direction, the sensor is located on a side of the heat exchanger adjacent to the second water receiving tray.

2. The air handling unit according to claim 1, characterized in that: The heat exchanger comprises a coil assembly for conducting a refrigerant, one end of the coil assembly along a third direction is an interface end, and the third direction is perpendicular to the first direction and the second direction; Along the third direction, the sensor is adjacent to one side of the interface end of the heat exchanger.

3. The air handling unit according to claim 2, characterized in that: The sensor is connected to the heat exchanger, and along the first direction, the sensor is located between the heat exchanger and the first water receiving pan.

4. The air handling unit according to claim 3, characterized in that: The heat exchanger comprises a guard plate facing the first water receiving tray, a connecting plate is connected to a side of the guard plate adjacent to the interface end, and the sensor is connected to a wall surface of the connecting plate facing away from the guard plate.

5. The air handling unit according to claim 1, characterized in that: A side plate of the first water receiving tray along a third direction is a first side plate, the third direction is perpendicular to the first direction and the second direction, and the first side plate is provided with a first drain port; Along the third direction, the sensor is adjacent to one side of the first side plate of the first water receiving tray.

6. The air handling unit according to claim 5, characterized in that: The heat exchanger comprises a coil assembly for conducting a refrigerant, and one end of the coil assembly along the third direction is an interface end; The first side plate and the interface end are located on the same side along the third direction inside the air handling unit.

7. The air handling unit according to claim 5, characterized in that: Along the second direction, the first drain port is arranged on a side of the first side plate adjacent to the second water receiving tray.

8. The air handling unit according to claim 5, characterized in that: A side plate of the second water receiving tray along the third direction is a second side plate, and the second side plate is provided with a second drain port.

9. The air handling unit according to claim 8, characterized in that: Along the first direction, the second drain port is arranged on a side of the second side plate adjacent to the first side plate.

10. The air handling unit according to claim 5, characterized in that: A plane perpendicular to the first direction is a first projection plane, the first drain port forms a first orthographic projection on the first projection plane, the sensor forms a second orthographic projection on the first projection plane, and along the third direction, the first orthographic projection and the second orthographic projection at least partially overlap; and / or, A side plate of the second water receiving tray along the third direction is a second side plate, the second side plate is provided with a second drain outlet, the plane perpendicular to the second direction is a second projection plane, the second drain outlet forms a third orthographic projection on the second projection plane, the sensor forms a fourth orthographic projection on the second projection plane, and along the third direction, the third orthographic projection at least partially overlaps with the fourth orthographic projection.

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