Heat exchange assembly, indoor unit and heating and ventilation system

Abstract

The embodiment of the utility model provides a heat exchange assembly, an indoor unit and a heating and ventilation system, and relates to the technical field of heating and ventilation systems.The heat exchange assembly comprises a heat exchange module, the heat exchange module comprises a heat exchanger, the heat exchanger comprises a heat exchange pipe, and the heat exchange pipe comprises straight pipe sections and bent pipe sections which are sequentially and alternately connected in the extending direction of the heat exchange pipe; the first monitoring cavity is defined by the heat exchange module, the first surrounding plate structure and the shell, in this way, the first monitoring cavity can contain refrigerants leaked from the connecting position of the straight pipe section and the bent pipe section of the heat exchange pipe, the concentration of the refrigerants in the first monitoring cavity is increased, the first refrigerant sensor can accurately recognize the refrigerants, and therefore the stability of the product is improved.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC systems, and in particular to a heat exchange component, an indoor unit, and a HVAC system. Background Art

[0002] A heat exchanger with compromised sealing may leak refrigerant, which can reduce heat transfer efficiency and pose a safety hazard. Therefore, a refrigerant sensor is required to monitor for leaks.

[0003] In related technologies, due to the uncertainty of the exact location of refrigerant leaks and the diversity of air conditioner installation methods, the placement of refrigerant sensors varies depending on the air conditioner's internal component layout. Consequently, refrigerant sensors are unable to promptly and accurately detect and provide feedback on refrigerant leaks at various locations within the heat exchanger, resulting in poor refrigerant monitoring reliability. Utility Model Content

[0004] The present application provides a heat exchange component, an indoor unit and a HVAC system. By placing a refrigerant sensor in a first monitoring cavity, the refrigerant leakage in the first monitoring cavity can be monitored in a timely manner, thereby increasing the stability of the product.

[0005] In a first aspect, an embodiment of the present application provides a heat exchange assembly for placement in a housing of an indoor unit, comprising:

[0006] A heat exchange module includes a heat exchanger, the heat exchanger includes a heat exchange tube, the heat exchange tube includes a straight tube section and a curved tube section alternately connected in sequence along the extension direction thereof, the straight tube section is distributed along a first direction, and the curved tube section is located on one side of the straight tube section along the first direction;

[0007] a first enclosure structure, located on one side of the heat exchange module along the first direction and connected to the heat exchange module, wherein a side of the first enclosure structure away from the heat exchange module is configured to abut against the outer shell, and the heat exchange module, the first enclosure structure, and the outer shell enclose a first monitoring cavity; and

[0008] The first refrigerant sensor is connected to the heat exchange module and is located in the first monitoring cavity.

[0009] In some embodiments, the first refrigerant sensor is located at the bottom end of the first monitoring cavity along the direction of gravity.

[0010] In some embodiments, the heat exchange module comprises:

[0011] at least two heat exchangers spaced apart from each other along a second direction, the second direction being perpendicular to the first direction; and

[0012] A first mounting plate connected between two adjacent heat exchangers, the first mounting plate being arranged on one side of the heat exchanger along a first direction;

[0013] Wherein, the first refrigerant sensor is installed on the first installation plate.

[0014] In some embodiments, the first enclosure structure comprises:

[0015] Two first side panels are respectively installed on the sides of the two heat exchangers facing away from each other along the edge in the second direction, and the sides of the two first side panels away from the heat exchanger abut against the outer shell. The first side panels, the heat exchanger, the first mounting plate and the outer shell enclose a first monitoring cavity.

[0016] In some embodiments, the heat exchange assembly further includes a first heat exchange main pipe and a second heat exchange main pipe, and the first heat exchange main pipe, the second heat exchange main pipe and the heat exchange pipe are connected to form a refrigerant flow path;

[0017] One of the two first side panels is provided with at least one opening, in which a sealing plug is embedded. The sealing plug is provided with a first pipe hole for inserting the first heat exchange main pipe, and a second pipe hole for inserting the second heat exchange main pipe.

[0018] In some embodiments, at least one of the two first side panels bulges in a direction away from the first monitoring cavity and forms an expansion cavity communicating with the first monitoring cavity.

[0019] In some embodiments, the heat exchange assembly further comprises:

[0020] Multiple branch pipes, the heat exchanger includes multiple heat exchange pipes, each branch pipe is connected to one end of each heat exchange pipe, and the other end of each branch pipe is connected to the first heat exchange main pipe;

[0021] Wherein, a plurality of branch pipes are located in the first monitoring cavity.

[0022] In some embodiments, the heat exchange assembly further comprises:

[0023] The refrigerant distribution pipe includes a header and a plurality of capillary tubes, one end of each capillary tube is connected to the other end of each heat exchange tube, and the other end of each capillary tube is connected to the header, and the header is connected to the second heat exchange main pipe;

[0024] Wherein, the refrigerant distribution pipe is located in the first monitoring cavity.

[0025] In some embodiments, the first side panel comprises:

[0026] A first body and a first vertical side formed by bending two ends of the first body along a first direction;

[0027] The first vertical side adjacent to the heat exchanger is connected to the heat exchanger, and the first vertical side away from the heat exchanger is used to abut against the shell.

[0028] In some embodiments, the heat exchange assembly further comprises:

[0029] The electrical connection line is electrically connected to the first refrigerant sensor. The first mounting plate has a wire hole through which the electrical connection line passes. An elastic shielding portion surrounding the electrical connection line is provided in the wire hole.

[0030] In some embodiments, the two heat exchangers are arranged obliquely relative to the direction of gravity, and the distance between the two heat exchangers gradually increases along the direction of gravity; wherein the first direction is perpendicular to the direction of gravity.

[0031] In some embodiments, the heat exchange assembly also includes a second enclosure structure, which is located on two sides opposite to the first enclosure structure along the first direction of the heat exchange module. The second enclosure structure is connected to the heat exchange module, and the side of the second enclosure structure away from the heat exchange module is used to abut the outer shell. The heat exchange module, the second enclosure structure and the outer shell enclose a second monitoring chamber.

[0032] In a second aspect, an embodiment of the present application provides an indoor unit, comprising:

[0033] The housing has an air inlet and an air outlet, and the air inlet and the air outlet are respectively located on opposite sides of the housing along the third direction; wherein the first direction is perpendicular to the third direction;

[0034] a first water receiving tray located inside the housing and on a side of the housing where the air inlet is located along the third direction; and

[0035] Like the heat exchange assembly mentioned above, the heat exchange assembly is arranged at the upper end of the first water receiving tray along the third direction.

[0036] In some embodiments, along the third direction, a distance between the refrigerant sensor and the first water receiving tray is h, and h satisfies: 50 mm ≤ h ≤ 70 mm.

[0037] In some embodiments, the heat exchange module includes two heat exchangers spaced apart along the second direction, the two heat exchangers are arranged obliquely relative to the direction of gravity, and the distance between the two heat exchangers gradually increases along the direction of gravity, and the two heat exchangers form a vent on the side close to the air inlet;

[0038] The first water receiving tray is surrounded to form a ventilation channel;

[0039] The ventilation opening, the ventilation channel and the air inlet are connected along the third direction.

[0040] In some embodiments, the first water receiving tray is formed with an annular water receiving trough, which includes two first water receiving troughs arranged opposite to each other along a first direction and two second water receiving troughs arranged opposite to each other along a second direction. The first water receiving trough and the second water receiving trough are connected, and the two heat exchangers are respectively installed in the corresponding two second water receiving troughs; wherein, along the first direction, the first water receiving trough located on the same side of the heat exchange module as the first refrigerant sensor is provided with a drain outlet, wherein the first direction, the second direction and the third direction are arranged perpendicular to each other.

[0041] In some embodiments, the bottom surface of the first water receiving trough includes a water guiding surface connected to the drain outlet, and the water guiding surface gradually descends along the direction of gravity from the side of the water guiding surface away from the drain outlet to the side close to the drain outlet.

[0042] In a third aspect, an embodiment of the present application provides a HVAC system, comprising:

[0043] compressor;

[0044] Such as the indoor unit mentioned above;

[0045] Outdoor unit;

[0046] The throttling component, compressor, indoor unit, throttling component and outdoor unit are connected in sequence

[0047] The heat exchange component, indoor unit and HVAC system provided in the embodiments of the present application, the heat exchange component includes a heat exchange module, the heat exchange module includes a heat exchanger, the heat exchanger includes a heat exchange tube, the heat exchange tube includes a straight tube section and a curved tube section alternately connected in sequence along its extension direction, the heat exchange module, the first enclosure structure and the outer shell enclose a first monitoring cavity, so that the first monitoring cavity can accommodate refrigerant leaked at the connection between the straight tube section and the curved tube section of the heat exchange tube, so that the refrigerant concentration in the first monitoring cavity increases, and the first refrigerant sensor can accurately identify the refrigerant, thereby increasing the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 is a structural diagram of a HVAC system provided in an embodiment of the present application;

[0050] Figure 2 This is a structural diagram of the indoor unit provided in an embodiment of the present application;

[0051] Figure 3 For this application Figure 2A structural diagram of the indoor unit from another perspective is shown;

[0052] Figure 4 For this application Figure 2 A structural diagram of the indoor unit from another perspective is shown;

[0053] Figure 5 A schematic structural diagram of a heat exchanger provided in an embodiment of the present application;

[0054] Figure 6 A schematic diagram of the structure of the heat exchange assembly provided in an embodiment of the present application;

[0055] Figure 7 For this application Figure 6 A schematic structural diagram of the heat exchange assembly from a first perspective is shown;

[0056] Figure 8 For this application Figure 6 A schematic structural diagram of the heat exchange assembly from a second perspective is shown;

[0057] Figure 9 This application Figure 8 A schematic diagram of the enlarged structure of the middle part A;

[0058] Figure 10 For this application Figure 6 A schematic structural diagram of the heat exchange assembly from a third perspective is shown;

[0059] Figure 11 This application Figure 10 A schematic diagram of the enlarged structure of the middle part B;

[0060] Figure 12 For this application Figure 6 A schematic structural diagram of the heat exchange assembly from a fourth perspective is shown;

[0061] Figure 13 For this application Figure 12 A schematic cross-sectional structure diagram of the thermal component shown along the MM cross section;

[0062] Figure 14 For this application Figure 5 A schematic structural diagram of the heat exchange assembly from a fifth perspective is shown;

[0063] Figure 15 For this application Figure 14 A schematic cross-sectional structure diagram of the heat exchange component shown along the NN cross section;

[0064] Figure 16 A schematic structural diagram of a first water receiving tray and a second water receiving tray provided in an embodiment of the present application;

[0065] Figure 17 This application Figure 16Schematic diagram of the enlarged structure of the middle C part;

[0066] Figure 18 For this application Figure 5 A structural schematic diagram of the heat exchange component from a sixth perspective is shown. Description of the drawings:

[0068] 1. Indoor unit;

[0069] 1000. Heat exchange component;

[0070] 100, heat exchange module; 110, heat exchanger; 110a, vent; 111, heat exchange tube; 1111, straight tube section; 1112, curved tube section; 120, first mounting plate; 120a, wire hole; 123, elastic shielding portion; 130, second mounting plate;

[0071] 200, first refrigerant sensor;

[0072] 320, first heat exchange main pipe; 330, second heat exchange main pipe;

[0073] 600, branch pipe;

[0074] 700, refrigerant distribution pipe; 710, collecting pipe; 720, capillary tube;

[0075] 800, first enclosure structure; 800a, first monitoring cavity; 800b, expansion cavity; 810, first side enclosure; 811, first body; 812, first vertical edge; 820, sealing plug; 820a, first pipe hole; 820b, second pipe hole;

[0076] 900, second enclosure structure; 900a, second monitoring cavity; 910, second side enclosure;

[0077] 2000, housing; 2000a, air inlet; 2000b, air outlet;

[0078] 3000, first water receiving tray; 3000a, ventilation channel; 3000b, water receiving trough; 3100b, first water receiving trough; 3200b, second water receiving trough; 3100, drain outlet; 3200, water guide surface;

[0079] 4000, fan;

[0080] 5000, second water tray;

[0081] 2. Compressor;

[0082] 3. Outdoor unit;

[0083] 4. Throttle component;

[0084] 5. Four-way valve;

[0085] First direction XX; second direction YY, third direction ZZ; first center plane JJ; second center plane KK. DETAILED DESCRIPTION

[0086] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0087] See also Figure 1 , an embodiment of the present application provides a HVAC system, which includes air conditioning, multi-split units, heat pumps and other systems for heating or cooling, but the embodiment of the present application does not limit this.

[0088] The HVAC system includes a compressor 2, an indoor unit 1, an outdoor unit 3, and a throttling assembly 4. The compressor 2, outdoor unit 3, throttling assembly 4, and indoor unit 1 are sequentially connected. The compressor 2 compresses the refrigerant, the indoor unit 1 and outdoor unit 3 exchange heat between the refrigerant and the outside world, and the throttling assembly 4 throttles and reduces pressure.

[0089] The throttling component 4 can be any throttling component 4 in the related art. For example, the throttling component 4 can be an electronic expansion valve, a throttle valve, etc., which is not limited to this. The HVAC system has a cooling mode and a heating mode.

[0090] In the refrigeration mode, the compressor 2 outputs high-temperature and high-pressure gaseous refrigerant, which is transmitted to the outdoor unit 3 and undergoes condensation and heat exchange to become a high-pressure, normal-temperature liquid refrigerant. The high-pressure, normal-temperature liquid refrigerant is further transmitted to the throttling component 4 and undergoes throttling and pressure reduction to become a low-temperature, low-pressure gas-liquid mixed refrigerant. The low-temperature, low-pressure gas-liquid mixed refrigerant then enters the indoor unit 1 and undergoes evaporation and heat exchange to become a low-temperature, low-pressure gaseous refrigerant. Finally, the low-temperature, low-pressure gaseous refrigerant flows back to the compressor 2, completing a complete refrigeration cycle.

[0091] In the heating mode, the compressor 2 outputs high-temperature and high-pressure gaseous refrigerant, which is transmitted to the indoor unit 1 and undergoes condensation and heat exchange to become a high-pressure liquid refrigerant at normal temperature. The high-pressure liquid refrigerant at normal temperature is further transmitted to the throttling component 4 and undergoes throttling and pressure reduction to become a low-temperature and low-pressure gas-liquid mixed refrigerant. The low-temperature and low-pressure gas-liquid mixed refrigerant then enters the outdoor unit 3 and undergoes evaporation and heat exchange to become a low-temperature and low-pressure gaseous refrigerant. Finally, the low-temperature and low-pressure gaseous refrigerant flows back to the compressor 2, completing a complete heating cycle.

[0092] It should be noted that the HVAC system may also include a four-way valve 5, which is used to switch the forward and reverse flow direction of the refrigerant. For example, in cooling mode, the refrigerant flow path is: compressor 2 - four-way valve 5 - outdoor unit 3 - throttling assembly 4 - indoor unit 1 - four-way valve 5 - compressor 2; while in heating mode, the refrigerant flow path is: compressor 2 - four-way valve 5 - indoor unit 1 - throttling assembly 4 - outdoor unit 3 - four-way valve 5 - compressor 2.

[0093] When the HVAC system is running or in standby mode, the refrigerant may leak from the heat exchanger 110 due to sealing issues. This can reduce the air conditioning heat exchange efficiency and easily cause safety hazards. Therefore, a refrigerant sensor is used to monitor whether refrigerant leaks occur so that relevant personnel can promptly address any leaks. Due to the distribution of the entire HVAC system pipeline, refrigerant leaks from the pipes exposed to the outside of the indoor unit 1 and the outdoor unit 3 can easily spread into the air when a refrigerant leak occurs, affecting the monitoring accuracy of the refrigerant sensor. Furthermore, since the outdoor unit 3 is located outdoors, refrigerant leaks can also easily spread into the air, affecting the monitoring accuracy of the refrigerant sensor. Therefore, the refrigerant sensor is generally located inside the indoor unit 1.

[0094] Based on this, see Figure 2-4 The present embodiment provides an indoor unit 1, comprising a housing 2000, a first water receiving tray 3000, a heat exchange assembly 1000, and a fan 4000. The indoor unit 1 has two operating states: vertical and horizontal. In the present embodiment, the indoor unit 1 is described as vertical for example.

[0095] The housing 2000 serves as the exterior component of the indoor unit 1 and is used to protect the internal components of the indoor unit 1. The housing 2000 has an air inlet 2000a and an air outlet 2000b. Along the third direction ZZ, the air inlet 2000a and the air outlet 2000b are located on opposite sides of the housing 2000. Air from the outside enters through the air inlet 2000a, exchanges heat with the heat exchange component 1000, and is discharged through the air outlet 2000b.

[0096] The fan 4000 is used to accelerate the flow rate of the external air through the air inlet 2000a and the air outlet 2000b, thereby increasing the heat exchange capacity between the external air and the heat exchange component 1000;

[0097] The first water receiving tray 3000 is located in the housing 2000 and can receive condensed water generated by the heat exchange assembly 1000 during operation;

[0098] Heat exchange assembly 1000, heat exchange assembly 1000 is used to exchange heat with external air entering through air inlet 2000a. Heat exchange assembly 1000 includes heat exchange module 100, heat exchange module 100 includes heat exchanger 110, heat exchanger 110 includes heat exchange tube 111, and heat exchange tube 111 is used to conduct refrigerant. Refrigerant circulates inside heat exchange tube 111 and adaptively evaporates or condenses to cool or heat the air. Specifically, when the air conditioner is cooling, the refrigerant evaporates and absorbs heat in the heat exchange tube 111 of heat exchange assembly 1000, thereby absorbing indoor heat and lowering the indoor temperature. When the air conditioner is heating, the refrigerant condenses and releases heat in the heat exchange tube 111 of heat exchange assembly 1000, thereby releasing heat indoors and raising the indoor temperature.

[0099] In some implementations, see Figure 5-6 The heat exchange tube 111 includes straight tube sections 1111 and curved tube sections 1112 alternately connected in sequence along its extension direction. The straight tube sections 1111 are distributed along the first direction XX, and the curved tube section 1112 is located on one side of the straight tube section 1111 along the first direction XX.

[0100] The connection between the curved pipe section 1112 and the straight pipe section 1111 is generally achieved by welding or using a pipe connector. The applicant has found that the refrigerant is more likely to leak at the connection between the curved pipe section 1112 and the straight pipe section 1111, thereby reducing the heat exchange efficiency of the heat exchanger 110 and easily causing safety hazards.

[0101] Therefore, please refer to the examples in this application. Figure 6 The heat exchange assembly 1000 also includes a first enclosure structure 800 and a first refrigerant sensor 200. The first enclosure structure 800 is located on one side of the heat exchange module 100 along the first direction XX and is connected to the heat exchange module 100. The side of the first enclosure structure 800 away from the heat exchange module 100 is used to abut the outer shell 2000. The heat exchange module 100, the first enclosure structure 800 and the outer shell 2000 enclose a first monitoring cavity 800a. That is, the first monitoring cavity 800a can surround the connection between the straight pipe section 1111 and the curved pipe section 1112 of the heat exchange tube 111, so that the refrigerant leaked through the connection between the straight pipe section 1111 and the curved pipe section 1112 will accumulate in the first monitoring cavity 800a and will not spread to other places of the indoor unit 1, so that the refrigerant concentration in the first monitoring cavity 800a increases, and the first refrigerant sensor 200 located in the first monitoring cavity 800a can monitor the refrigerant faster and more accurately, effectively improving 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 heat exchange component 1000.

[0102] On the other hand, in the embodiment of the present application, since the first refrigerant sensor 200 is connected to the heat exchange module 100 and the first refrigerant sensor 200 and the heat exchange module 100 are assembled during the production stage, the subsequent step of separately installing the first refrigerant sensor 200 is reduced, thereby shortening the overall production cycle and improving production efficiency. At the same time, by directly installing the first refrigerant sensor 200 on the heat exchange module 100, the structural characteristics of the heat exchange module 100 itself can be used as a positioning reference to ensure that the installation position and angle of the first refrigerant sensor 200 are accurate. This design reduces the risk of performance deviation or failure caused by improper on-site installation and improves product reliability and stability.

[0103] Understandably, see Figure 5-6 The heat exchange tube 111 is provided with a plurality of straight tube sections 1111 and curved tube sections 1112. The straight tube sections 1111 are distributed along the first direction XX. Figure 6 The orientation shown is for reference only. The first direction XX is the front-to-back direction. Part of the bend section 1112 is located at the front side of the first direction XX, and the remaining part of the bend section 1112 is located at the rear side of the first direction XX. Therefore, the refrigerant is easily leaked at both the front and rear sides of the first direction XX. Therefore, in the embodiment of the present application, refer to Figure 7-8 A second enclosure structure 900 may also be provided. The second enclosure structure 900 and the first enclosure structure 800 are respectively arranged on both sides of the heat exchange module 100 along the first direction XX, wherein when the first enclosure structure 800 is arranged on the front side, the second enclosure structure 900 is arranged on the rear side. In some other embodiments, when the first enclosure structure 800 is arranged on the rear side, the second enclosure structure 900 is arranged on the front side. In the embodiment of the present application, the first enclosure structure 800 is arranged on the front side, and the second enclosure structure 900 is arranged on the rear side for exemplary description.

[0104] The second enclosure structure 900 has the same function as the first enclosure structure 800, wherein the second enclosure structure 900 is connected to the heat exchange module 100, and the side of the second enclosure structure 900 away from the heat exchange module 100 abuts against the outer shell 2000. The heat exchange module 100, the second enclosure structure 900 and the outer shell enclose a second monitoring cavity 900a. In this way, the refrigerant leaked at the rear side is also contained in the second monitoring cavity 900a, which can prevent the refrigerant from scattering.

[0105] In order to quickly detect the refrigerant leakage in the second monitoring chamber 900a, the embodiment of the present application is also provided with a second refrigerant sensor (not shown in the figure). The second refrigerant sensor is arranged in the second monitoring chamber 900a, and can also monitor the refrigerant faster and more accurately. Combined with the first refrigerant sensor in the first monitoring chamber 800a, it can effectively improve the reliability of refrigerant monitoring, facilitate relevant personnel to deal with refrigerant leakage in a timely manner, and ensure the continued normal operation of the heat exchange component 1000.

[0106] At the same time, since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will move downward under the influence of gravity. Specifically, the refrigerant leaking in the first monitoring cavity 800a will sink to the bottom of the first monitoring cavity 800a under the action of gravity, and the refrigerant leaking in the second monitoring cavity 900a will sink to the bottom of the second monitoring cavity 900a under the action of gravity. Therefore, in the embodiment of the present application, please continue to refer to Figure 6 The first refrigerant sensor is located at the bottom of the first monitoring cavity 800a along the direction of gravity, and the second refrigerant sensor is located at the bottom of the second monitoring cavity 900a along the direction of gravity. In this way, both the first refrigerant sensor and the second refrigerant sensor can ensure the accuracy and timeliness of monitoring the leaked refrigerant.

[0107] In order to facilitate the description and understanding of the specific structure of the heat exchange component 1000, a first direction XX and a second direction YY are defined. Figure 6 The directions shown are for reference only. The first direction XX is the front-to-back direction, and the second direction YY is the left-to-right direction. It is understood that in some embodiments, the first direction XX may also be the left-to-right direction, and the second direction YY may be the front-to-back direction. That is, the orientation of the first direction XX may be determined based on the visual conditions in actual use. Some embodiments of this application are described using the first direction XX as the front-to-back direction.

[0108] See Figure 6 The heat exchange module 100 includes at least two heat exchangers 110 and a first mounting plate 120 connected between two adjacent heat exchangers 110. The at least two heat exchangers 110 are spaced apart along the second direction YY, and the second direction YY is perpendicular to the first direction XX. The first mounting plate 120 is arranged on one side of the heat exchanger 110 along the first direction XX, and the first refrigerant sensor 200 is installed on the first mounting plate 120.

[0109] At least two heat exchangers 110 can effectively increase the heat exchange area, thereby improving the heat exchange efficiency of the entire heat exchange module 100. Since the second direction YY is perpendicular to the first direction XX, the layout of the heat exchange component 1000 can be made more compact, and the first mounting plate 120 can not only connect the two adjacent heat exchangers 110, but also ensure the stability of the structure of the entire heat exchange module 100 after connection.

[0110] Furthermore, the first mounting plate 120 provides a mounting location for the first refrigerant sensor 200, giving the heat exchange module 100 a modular design. This reduces the need for subsequent, separate installation of the first refrigerant sensor 200, thereby shortening the overall production cycle and improving production efficiency. Furthermore, by directly mounting the first refrigerant sensor 200 on the heat exchange module 100, the module's inherent structural features can be used as a positioning reference, ensuring the precise installation position and angle of the first refrigerant sensor 200. This design reduces the risk of performance deviations or failures caused by improper on-site installation, thereby improving product reliability and stability.

[0111] For details about the embodiments of this application, please continue to refer to Figure 6-8 The heat exchange module 100 includes two heat exchangers 110, which are arranged at an angle relative to the direction of gravity. The distance between the two heat exchangers 110 gradually increases along the direction of gravity. This inclined arrangement of the heat exchangers 110, combined with the gradually increasing distance between them, facilitates more uniform and effective heat exchange as the air flows through the heat exchangers 110. This design allows the airflow to more fully contact the surface of the heat exchangers 110 during its flow, thereby improving heat transfer efficiency and accelerating the heating or cooling of the indoor air.

[0112] Further, see Figure 7-8 The heat exchange module 100 in the embodiment of the present application also includes a second mounting plate 130. The second mounting plate 130 and the first mounting plate 120 are respectively located on both sides of the straight pipe section 1111 of the heat exchange tube 111 along the first direction XX. The second mounting plate 130 also connects the two adjacent heat exchangers 110. The second mounting plate 130 can cooperate with the first mounting plate 120 to more stably connect the two adjacent heat exchangers 110. In addition, the second mounting plate 130 can also provide an installation position for the second refrigerant sensor.

[0113] In the indoor unit 1, leaked refrigerant may pose certain safety hazards, such as refrigerant explosion. Therefore, when the first refrigerant sensor 200 detects leaked refrigerant, it is necessary to transmit a signal to the controller. The controller can control and increase the speed of the fan so that the refrigerant converted into gas can be discharged from the air outlet together with the external air.

[0114] The first refrigerant sensor 200 can be connected to the controller by wireless signal or by electrical connection line. In the embodiment of the present application, in order to ensure stable signal transmission, an electrical connection line (not shown in the figure) is used for connection, that is, one end of the electrical connection line is electrically connected to the first refrigerant sensor 200, and the other end is electrically connected to the controller.

[0115] To facilitate the routing of electrical connections, refer to Figure 8-9The first mounting plate 120 is provided with a wire hole 120a, and the electrical connection wire passes through the wire hole 120a. In order to reduce the possibility of the refrigerant leaking from the front end along the first direction XX leaking to other places from the wire hole 120a, thereby reducing the refrigerant concentration at the bottom end of the heat exchange module 100, thereby affecting the accuracy and timeliness of the first refrigerant sensor 200 monitoring the leaked refrigerant, in this embodiment of the application, an elastic shielding portion 123 is provided in the wire hole 120a and is surrounded by the outer periphery of the electrical connection wire. The elastic shielding portion 123 can tightly wrap the electrical connection wire, effectively reducing the possibility of the refrigerant flowing to other places through the wire hole 120a, so that the refrigerant leaking from the front end along the first direction XX can accumulate under the action of gravity, thereby increasing the concentration of the refrigerant, and can be accurately and quickly monitored by the first refrigerant sensor 200.

[0116] The elastic shielding portion 123 can be one or more, and can cover at least part of the cross-section of the wire hole 120a. Since the elastic shielding portion 123 is elastic, when the electrical connection line passes through the elastic shielding portion 123, the elastic shielding portion 123 can fit the electrical connection line, thereby further reducing the possibility of leaked refrigerant flowing from the wire hole 120a to other places.

[0117] Specifically, the elastic shielding portion 123 may be made of rubber, silicone, or other elastic materials in the prior art, which will not be further explained here.

[0118] See also Figure 10 Specifically, the first enclosure structure 800 includes two first side enclosures 810, and the two first side enclosures 810 are respectively installed on the side of the two heat exchangers 110 that are away from each other along the edge of the second direction YY, and the two first side enclosures 810 are abutted against the outer shell 2000 on the side away from the heat exchanger. The first side enclosures 810, the heat exchanger 110, the first mounting plate 120 and the outer shell 2000 enclose a first monitoring cavity 800a, that is, when there are multiple heat exchangers 110, the formation of the first monitoring cavity 800a only requires two first side enclosures 810, the heat exchanger 110 and the outer shell 2000, which not only reduces the manufacturing cost, but also ensures that the first monitoring cavity 800a has enough space to arrange other components, thereby enhancing the flexibility of the installation layout of the entire indoor unit 1.

[0119] Furthermore, the first side panel 810 not only serves as a boundary separating the first monitoring chamber 800a but also strengthens the overall structural stability. Its close fit with the housing 2000 and its support for the heat exchanger 110 together form a stable framework, helping to resist external shock and vibration, extending the life of the equipment.

[0120] Similarly, the second panel structure 900 may also include two second side panels 910 . The second side panels 910 have the same functions as the first side panels 810 , and the connection and function of the second side panels 910 are not further explained here.

[0121] Among them, see Figure 11 The first side panel 810 includes a first body 811 and a first vertical edge 812 formed by bending the two ends of the first body 811 along the first direction XX. The first vertical edge 812 adjacent to the heat exchanger 110 is connected to the heat exchanger 110, and the first vertical edge 812 away from the heat exchanger 110 is used to abut against the outer shell 2000.

[0122] Since the first side panel 810 needs to be connected to the heat exchanger 110 and abut the housing 2000, in order to ensure the stability of the connection, refer to Figure 11 The first side panel 810 includes a first body 811 and a first vertical edge 812 . The first vertical edge 812 is formed by bending from the first body 811 , thereby increasing the rigidity and strength of the entire first side panel 810 .

[0123] It can be understood that the first side panel 810 can be formed by bending the two ends of the first body 811 along the first direction XX, or it can be formed by bending multiple edges to form multiple first vertical edges 812. The specific setting depends on the actual situation. In the embodiment of the present application, the first vertical edge 812 is approximately 90 degrees to the first body 811. In this way, the first vertical edge 812 adjacent to the outer shell can be fitted with the outer shell 2000, thereby increasing the contact area between the entire first side panel 810 and the outer shell, thereby improving the stability of the first side panel 810.

[0124] In addition, the first vertical edge 812 can also provide sufficient installation area to provide connection between the fasteners and the shell. At the same time, since the contact area between the entire first side panel 810 and the shell is increased, the possibility of the refrigerant in the first monitoring cavity 800a leaking from the connection between the first side panel 810 and the shell 2000 can be reduced, thereby further ensuring the accuracy and timeliness of the refrigerant monitoring by the first refrigerant sensor 200.

[0125] Please continue reading Figure 10 The heat exchange assembly 1000 includes a first heat exchange main pipe 320 and a second heat exchange main pipe 330. The first heat exchange main pipe 320, the second heat exchange main pipe 330 and the heat exchange pipe 111 are connected to form a refrigerant flow path, wherein the first heat exchange main pipe 320 and the second heat exchange main pipe 330 can both be refrigerant inlet pipes and refrigerant outlet pipes. It can be understood that when the first heat exchange main pipe 320 is the refrigerant inlet pipe, the second heat exchange main pipe 330 is the refrigerant outlet pipe, and when the first heat exchange main pipe 320 is the refrigerant outlet pipe, the second heat exchange main pipe 330 is the refrigerant inlet pipe.

[0126] In order to reasonably distribute the internal space of the indoor unit 1, that is, to make the first heat exchange main pipe 320 and the second heat exchange main pipe 330 and the heat exchanger 110 compact, the first heat exchange main pipe 320 and the second heat exchange main pipe 330 need to pass through the first side panel 810 to connect with the pipes of the entire HVAC system. Figure 10 One of the two first side panels 810 is provided with at least one opening, in which a sealing plug 820 is embedded. A first through-tube hole 820a for connecting the first heat exchange main pipe 320 and a second through-tube hole 820b for connecting the second heat exchange main pipe 330 are formed in the sealing plug 820.

[0127] It is understood that one first side panel 810 may have one opening, and the other first side panel 810 may have one opening, with the first heat exchange manifold passing through the opening of one first side panel 810 and the second heat exchange manifold passing through the opening of the other first side panel 810. Alternatively, one first side panel 810 may have two openings, while the other first side panel 810 may have no openings. In this embodiment of the present application, for ease of manufacturing and connection to the HVAC system piping, the example of one first side panel 810 having two openings is used for illustration.

[0128] Furthermore, in order to reduce the leakage of refrigerant from the opening to the outside of the first monitoring cavity 800a, thereby affecting the accuracy and timeliness of the refrigerant monitoring by the first refrigerant sensor 200, in the embodiment of the present application, refer to Figure 10 A sealing plug 820 is embedded in the opening, and a first through-tube hole 820 a for plugging the first heat exchange main pipe 320 and a second through-tube hole 820 b for plugging the second heat exchange main pipe 330 are formed in the sealing plug 820 .

[0129] The sealing plug 820 can be made of a flexible material such as rubber or silicone. This allows the sealing plug 820 to fit snugly around the first and second heat exchange main pipes 320, 330 when they pass through it, reducing the possibility of refrigerant leakage from the first monitoring cavity 800a. If two openings are provided on a first side panel 810, two corresponding sealing plugs 820 are also provided, one of which has a first pipe hole 820a and the other has a second pipe hole 820b.

[0130] In some other embodiments, an opening may be provided on a first side panel 810 , a sealing plug 820 is provided in the opening, and a first pipe hole 820 a and a second pipe hole 820 b are provided on the sealing plug 820 .

[0131] Please return to Figure 6 At least one of the two first side panels 810 bulges in a direction away from the first monitoring chamber 800a, and forms an expansion chamber 800b connected to the first monitoring chamber 800a. In this way, through the setting of the expansion chamber 800b, it is possible to ensure that there is sufficient space to meet the connection between the first heat exchange main pipe 320 and the heat exchange pipe 111, as well as the connection between the second heat exchange main pipe 330 and the heat exchange pipe 111. In addition, the space of the indoor unit 1 can be fully utilized, making the structural layout of the entire indoor unit 1 more compact and the space utilization more reasonable.

[0132] The expansion cavity 800b can be formed by the first side panel 810 itself bulging in the direction away from the first monitoring cavity 800a, or a hole can be opened on the first side panel 810, and a cover shell is set to be embedded in the opening, or a cover shell can be set to be fixed at the hole by a fixed connection method such as bolts. It should be understood that when setting the cover shell, a sealing ring needs to be set between the first side panel 810 and the cover shell to ensure an excellent sealing effect.

[0133] In the examples of this application, please continue to refer to Figure 10 The heat exchange assembly 1000 further includes a plurality of branch pipes 600 and a refrigerant distribution pipe 700 , wherein the plurality of branch pipes 600 and the refrigerant distribution pipe 700 are all located in the first monitoring cavity 800 a .

[0134] It is understood that, to improve heat exchange efficiency, the heat exchanger 110 generally includes multiple heat exchange tubes 111. Each branch tube 600 is connected to one end of each heat exchange tube 111, and the other end of each branch tube 600 is connected to the first heat exchange main pipe 320. The refrigerant distribution pipe 700 includes a header 710 and multiple capillary tubes 720. One end of each capillary tube 720 is connected to the other end of each heat exchange tube 111, and the other end of each capillary tube 720 is connected to the header 710, which is connected to the second heat exchange main pipe 330. In this way, the refrigerant can be evenly distributed among the multiple heat exchange tubes 111. This uniform refrigerant distribution helps to improve heat exchange efficiency, reduce temperature gradients during the heat exchange process, and thus improve the heat exchange performance of the entire heat exchange module 100.

[0135] Since multiple branch pipes 600 need to be connected to multiple heat exchange tubes 111, refrigerant leakage may also occur at the connection between the branch pipes 600 and the heat exchange tubes 111. Therefore, in an embodiment of the present application, multiple branch pipes 600 and the refrigerant distribution pipe 700 are all located in the first monitoring cavity 800a. In this way, after the refrigerant leaked at the connection between the branch pipe 600 and the heat exchange tube 111 sinks to the bottom of the first monitoring cavity 800a under the action of gravity, the first refrigerant sensor 200 can quickly and accurately monitor the leaked refrigerant, so that relevant personnel can deal with the refrigerant leakage in a timely manner and ensure the continued normal operation of the heat exchange component 1000.

[0136] Similarly, since multiple capillaries 720 need to be connected to multiple heat exchange tubes 111, refrigerant leakage may also occur at the connection between the capillary tube 720 and the heat exchange tube 111. In this way, after the refrigerant leaked at the connection between the capillary tube 720 and the heat exchange tube 111 sinks to the bottom of the first monitoring cavity 800a under the action of gravity, the first refrigerant sensor 200 can quickly and accurately monitor the leaked refrigerant, so that relevant personnel can deal with the refrigerant leakage in a timely manner and ensure that the heat exchange component 1000 continues to operate normally.

[0137] In the embodiment of the present application, since the indoor unit 1 has two use states, vertical and horizontal, it can adapt to a variety of application scenarios. Due to the different use states of the indoor unit 1, the position setting of the water tray of the indoor unit 1 will also be different. In some embodiments, refer to Figure 2-4 The first water receiving tray 3000 is located inside the shell 2000 and is located on the side of the air inlet 2000a of the shell 2000 along the third direction ZZ. This state is a vertical state. The third direction ZZ is the same as the direction of gravity. The first water receiving tray 3000 can receive the condensed water generated by the heat exchange component 1000 during operation and can also receive the leaked refrigerant that sinks under the action of gravity.

[0138] Also, please refer back to Figure 2-4 The indoor unit 1 is further provided with a second water receiving tray 5000 to cope with the horizontal usage state of the indoor unit 1. It can be understood that the second water receiving tray 5000 has the same function as the first water receiving tray 3000.

[0139] In the embodiment of the present application, the second water receiving tray 5000 is connected to the first water receiving tray 3000, and the second water receiving tray 5000 is arranged on one side of the heat exchange component 1000 along the second direction YY. The second direction YY here is the same as the second direction YY above, and will not be repeated here. The second direction YY is perpendicular to the first direction XX and the third direction ZZ. Figure 9-10 With reference to the orientation of , the first direction XX may be the front-to-back direction, the second direction YY may be the left-to-right direction, and the third direction ZZ may be the up-down direction.

[0140] The specific location of the second water receiving tray 5000 is described below. The second water receiving tray 5000 is located on one side of the heat exchange assembly 1000 along the second direction YY. Figure 10 As a reference (the indoor unit 1 is in an upright position), the second water receiving tray 5000 can be located on the left side of the heat exchange assembly 1000 along the left-right direction, or on the right side of the heat exchanger 110 along the left-right direction. Some embodiments of the present application illustrate the second water receiving tray 5000 being located on the right side of the heat exchange assembly 1000 along the left-right direction. It will be understood that when the indoor unit 1 is in a horizontal position, the second water receiving tray 5000 is located on the lower side of the indoor unit 1 along the direction of gravity. In this case, the second direction YY is the direction of gravity, and at least two heat exchangers 110 are spaced apart along the third direction ZZ.

[0141] This solution provides a first water receiving tray 3000 and a second water receiving tray 5000, that is, no matter whether the indoor unit 1 is used vertically or horizontally, there is a water receiving tray to hold condensed water, which can ensure the waterproof performance of the indoor unit 1 and expand the application range of the indoor unit 1.

[0142] When used vertically, condensed water and leaked refrigerant will sink under the action of gravity and settle in the first water receiving tray 3000. In order to prevent the first refrigerant sensor 200 from being soaked in condensed water and liquid refrigerant, please refer to Figure 12-13 Therefore, in the embodiment of the present application, along the third direction ZZ, the distance between the first refrigerant sensor 200 and the first water receiving tray 3000 is h, and h satisfies: 50mm≤h≤70mm, that is, h can be in the range of 50mm, 55mm, 60mm, 65mm, 70mm or any two thereof. In this way, the first refrigerant sensor 200 can be prevented from being soaked in water, thereby ensuring the accuracy and timeliness of the monitoring of the first refrigerant sensor 200.

[0143] Specifically, the heat exchange module 100 includes two heat exchangers 110 opposite to each other along the second direction YY. The two heat exchangers 110 are arranged obliquely relative to the direction of gravity, and the distance between the two heat exchangers 110 gradually increases along the direction of gravity. When the indoor unit 1 is in a vertical state, the third direction ZZ is along the direction of gravity. When the indoor unit 1 is in a horizontal state, the second direction YY is along the direction of gravity. It can be understood that when the indoor unit 1 is in a horizontal state, the heat exchange module 100 is inclined relative to Figure 8 The heat exchange module 100 in FIG. 1 is rotated 90° clockwise. Figure 10 For the heat exchange module 100, it is rotated 90° counterclockwise. At this time, the two heat exchangers 110 are still tilted relative to the direction of gravity, and the distance between the two heat exchangers 110 gradually increases along the direction of gravity, and the end with a larger distance corresponds to the second water receiving tray 5000. The embodiment of the present application is illustrated by taking the indoor unit 1 in a vertical state.

[0144] See also Figure 14-15 The two heat exchangers 110 form a vent 110a on one side near the air inlet 2000a. The first water tray 3000 is surrounded by a ventilation channel 3000a. The vent 110a, ventilation channel 3000a, and air inlet 2000a are connected along the third direction ZZ. The tilted arrangement of the heat exchangers 110 and the gradually increasing spacing between them facilitate more uniform and efficient heat exchange as the air flows through the heat exchangers 110. This design allows the airflow to more fully contact the surface of the heat exchanger 110 during flow, thereby improving heat transfer efficiency and accelerating the heating or cooling of the indoor air.

[0145] Due to the varying inclination and spacing of the heat exchangers 110, the airflow entering the heat exchange module 100 is guided by the heat exchangers 110 and naturally forms a more reasonable distribution. This distribution helps reduce dead spots and improve the air circulation efficiency of the entire system, thereby further enhancing heat exchange performance.

[0146] The ventilation channel 3000a formed by the first water tray 3000 connects to the vent 110a and the air inlet 2000a along the third direction ZZ, in the direction of gravity, to improve drainage performance. In cooling mode, water droplets may condense on the surface of the heat exchanger 110. The tilted heat exchanger 110 helps these droplets quickly slide down into the water tray, reducing wind resistance and energy efficiency loss caused by water droplets remaining on the heat exchanger 110. It also prevents the inconvenience caused by water droplets dripping into the interior space.

[0147] In order to facilitate the support of the heat exchanger 110, see Figure 15-16 The first water receiving tray 3000 is formed with an annular water receiving trough 3000b. The water receiving trough 3000b includes two first water receiving troughs 3100b arranged opposite each other along a first direction XX, and two second water receiving troughs 3200b arranged opposite each other along a second direction YY. The first water receiving troughs 3100b and the second water receiving troughs 3200b are connected, and the two heat exchangers 110 are respectively mounted in the corresponding two second water receiving troughs 3200b. The connectivity between the first water receiving troughs 3100b and the second water receiving troughs 3200b further ensures the uniform distribution and effective collection of condensed water throughout the water receiving trough 3000b, avoiding problems such as localized water accumulation or poor water flow.

[0148] The two heat exchangers 110 are installed in the corresponding two second water receiving tanks 3200b, which optimizes the layout of the entire heat exchange component 1000, makes the installation between the heat exchange component 1000 and the first water receiving pan 3000 more compact, and the condensed water on the heat exchanger 110 can also flow along the shell of the heat exchanger 110 into the second water receiving tank 3200b, and the condensed water in the curved pipe section 1112 at the front and rear ends of the first direction XX can fall into the first water receiving pan 3000, and the leaked refrigerant can also be received by the first water receiving pan 3000. The connected first water receiving tank 3100b and the second water receiving tank 3200b can prevent the condensed water and the refrigerant from flowing into the room. At the same time, the uniform distribution and effective collection of the condensed water in the entire water receiving tank 3000b are ensured, avoiding the problems of local water accumulation or poor water flow.

[0149] Since the bottom of the heat exchanger 110 is installed in the second water receiving tank 3200b, it will occupy the middle of the second water receiving tank 3200b. Therefore, in order to improve the smoothness of drainage, the first water receiving tank 3100b located on the same side of the heat exchange module 100 as the first refrigerant sensor 200 is provided with a drain outlet 3100, through which the liquid refrigerant and condensed water can be discharged in time.

[0150] See also Figure 17 In order to quickly discharge the liquid refrigerant and condensed water in the first water receiving tank 3100b, in the embodiment of the present application, refer to Figure 16-17 The bottom surface of the first water receiving trough 3100b includes a water guide surface 3200 connected to the drain outlet 3100. The water guide surface 3200 gradually descends along the third direction ZZ, from the side of the water guide surface 3200 away from the drain outlet 3100 to the side closer to the drain outlet 3100. The design of the water guide surface 3200 allows the liquid in the first water receiving trough 3100b to flow quickly along the water guide surface 3200 toward the drain outlet 3100, thereby accelerating the drainage process. This natural flow guided by gravity reduces drainage time and improves drainage efficiency.

[0151] Considering that the indoor unit 1 can also be used in a horizontal state, at this time, the second water receiving tray 5000 is used to receive the refrigerant and condensed water that sink under the action of gravity. Therefore, in order to enable the liquid in the second water receiving tray 5000 to be discharged in time, the second water receiving tray 5000 is also provided with a water guide surface 3200, such as Figure 17 As shown, the water guiding surface 3200 gradually descends along the second direction YY from the side of the water guiding surface 3200 away from the drain outlet 3100 to the side close to the drain outlet 3100. In this way, the condensed water and liquid refrigerant can also be quickly discharged through the water guiding surface 3200 of the second water receiving tray 5000.

[0152] It should be understood that due to the presence of the water guide surface 3200 , the refrigerant will gather at the drain outlet 3100 , so the refrigerant concentration at the drain outlet 3100 is the highest. Therefore, in order to improve the accuracy of refrigerant monitoring, the first refrigerant sensor 200 is set at the drain outlet 3100 .

[0153] Specifically, when the indoor unit 1 is in a vertical position, Figure 18 The first direction XX shown is the front-to-back direction, the second direction YY is the left-to-right direction, and the third direction ZZ is the gravity direction. The heat exchange module 100 is defined as having a first center plane JJ and a second center plane KK. The first center plane JJ and the second center plane KK are perpendicular to each other, and the first center plane JJ is perpendicular to the third direction ZZ, and the second center plane KK is perpendicular to the second direction YY. In this way, the first refrigerant sensor 200 is located on the lower side of the first center plane JJ and on the right side of the second center plane, and the drain outlet 3100 is also located at the lower end of the first center plane JJ and on the right side of the second center plane KK. In this way, the first refrigerant sensor 200 can ensure the accuracy and timeliness of refrigerant monitoring.

[0154] When the indoor unit 1 is in a horizontal state, the first direction XX is the front-to-back direction, the second direction YY is the gravity direction, and the third direction ZZ is the left-to-right direction. At this time, the indoor unit 1 is defined as having a first center plane JJ and a second center plane KK (consistent with the first center plane JJ and the second center plane KK mentioned above). In this way, the first refrigerant sensor 200 is located on the lower side of the second center plane KK and on the left side of the first center plane JJ. At this time, the drain outlet 3100 is also located on the lower side of the second center plane KK and on the left side of the first center plane JJ. The first refrigerant sensor 200 can ensure the accuracy and timeliness of refrigerant monitoring when the indoor unit 1 is in a horizontal state.

[0155] The same or similar numbers in the drawings of this embodiment correspond to the same or similar items; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0156] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A heat exchange assembly, for placement in a housing of an indoor unit, characterized in that: include: A heat exchange module, comprising a heat exchanger, wherein the heat exchanger comprises a heat exchange tube, wherein the heat exchange tube comprises a straight tube section and a curved tube section alternately connected in sequence along an extension direction thereof, wherein the straight tube section is distributed along a first direction, and the curved tube section is located on one side of the straight tube section along the first direction; a first enclosure structure, located on one side of the heat exchange module along the first direction and connected to the heat exchange module, wherein a side of the first enclosure structure away from the heat exchange module is used to abut the outer shell, and the heat exchange module, the first enclosure structure, and the outer shell enclose a first monitoring cavity; as well as The first refrigerant sensor is connected to the heat exchange module and is located in the first monitoring cavity.

2. The heat exchange assembly according to claim 1, characterized in that: The first refrigerant sensor is located at the bottom end of the first monitoring cavity along the direction of gravity.

3. The heat exchange assembly according to claim 1, characterized in that: The heat exchange module comprises: at least two heat exchangers spaced apart from each other along a second direction, the second direction being perpendicular to the first direction; and a first mounting plate connected between two adjacent heat exchangers, wherein the first mounting plate is arranged on one side of the heat exchanger along the first direction; Wherein, the first refrigerant sensor is installed on the first mounting plate.

4. The heat exchange assembly according to claim 3, characterized in that: The first enclosure structure comprises: Two first side panels are respectively installed on the sides of the two heat exchangers facing away from each other along the edges in the second direction, and the sides of the two first side panels away from the heat exchanger abut against the outer shell. The first side panels, the heat exchanger, the first mounting plate and the outer shell enclose the first monitoring cavity.

5. The heat exchange assembly according to claim 4, characterized in that: The heat exchange assembly further includes a first heat exchange main pipe and a second heat exchange main pipe, wherein the first heat exchange main pipe, the second heat exchange main pipe and the heat exchange pipe are connected to form a refrigerant flow path; One of the two first side panels is provided with at least one opening, a sealing plug is embedded in the opening, and a first tube hole for plugging in the first heat exchange main pipe and a second tube hole for plugging in the second heat exchange main pipe are formed in the sealing plug.

6. The heat exchange assembly according to claim 5, characterized in that: At least one of the two first side panels bulges in a direction away from the first monitoring cavity and forms an expansion cavity communicated with the first monitoring cavity.

7. The heat exchange assembly according to claim 5, characterized in that: The heat exchange component further includes: A plurality of branch pipes, the heat exchanger includes a plurality of the heat exchange pipes, each of the branch pipes is connected to one end of each of the heat exchange pipes, and the other end of each of the branch pipes is connected to the first heat exchange main pipe; Wherein, the multiple branch pipes are located in the first monitoring cavity.

8. The heat exchange assembly according to claim 7, characterized in that: The heat exchange component further includes: A refrigerant distribution pipe, comprising a header and a plurality of capillary tubes, one end of each capillary tube being connected to the other end of each heat exchange tube, the other end of each capillary tube being connected to the header, and the header being connected to the second heat exchange main pipe; Wherein, the refrigerant distribution pipe is located in the first monitoring cavity.

9. The heat exchange assembly according to claim 4, characterized in that: The first side panel comprises: a first body and first vertical edges formed by bending two ends of the first body along the first direction; The first vertical side adjacent to the heat exchanger is connected to the heat exchanger, and the first vertical side away from the heat exchanger is used to abut against the shell.

10. The heat exchange assembly according to claim 3, characterized in that: The heat exchange component further includes: An electrical connection line is electrically connected to the first refrigerant sensor. The first mounting plate has a wire hole through which the electrical connection line passes. An elastic shielding portion is provided in the wire hole and surrounds the electrical connection line.

11. The heat exchange assembly according to claim 3, characterized in that: The two heat exchangers are arranged obliquely relative to the direction of gravity, and the distance between the two heat exchangers gradually increases along the direction of gravity; wherein, the first direction is perpendicular to the direction of gravity.

12. The heat exchange assembly according to claim 1, characterized in that: The heat exchange assembly also includes a second enclosure structure, which is located on two sides opposite to the first enclosure structure along the first direction of the heat exchange module. The second enclosure structure is connected to the heat exchange module, and the side of the second enclosure structure away from the heat exchange module is used to abut the outer shell. The heat exchange module, the second enclosure structure and the outer shell enclose a second monitoring cavity.

13. An indoor unit, characterized in that: include: a housing, the housing having an air inlet and an air outlet, wherein the air inlet and the air outlet are respectively located on opposite sides of the housing along a third direction; wherein the first direction is perpendicular to the third direction; a first water receiving tray, located in the housing and located on a side of the housing where the air inlet is located along the third direction; and The heat exchange assembly according to any one of claims 1 to 12, wherein the heat exchange assembly is arranged at an upper end of the first water receiving tray along the third direction.

14. The indoor unit according to claim 13, characterized in that: Along the third direction, a distance between the first refrigerant sensor and the first water receiving tray is h, and h satisfies: 50 mm ≤ h ≤ 70 mm.

15. The indoor unit according to claim 13, wherein: The heat exchange module includes two heat exchangers spaced apart along the second direction, the two heat exchangers are arranged obliquely relative to the direction of gravity, and the distance between the two heat exchangers gradually increases along the direction of gravity, and the two heat exchangers form a vent on the side close to the air inlet; The first water receiving tray is surrounded to form a ventilation channel; Wherein, the ventilation opening, the ventilation channel and the air inlet are connected along the third direction.

16. The indoor unit according to claim 15, characterized in that: The first water receiving tray is formed with an annular water receiving groove, and the water receiving groove includes two first water receiving grooves arranged opposite to each other along the first direction and two second water receiving grooves arranged opposite to each other along the second direction, the first water receiving groove and the second water receiving groove are connected, and the two heat exchangers are respectively installed in the corresponding two second water receiving grooves; Wherein, along the first direction, the first water receiving tank located on the same side of the heat exchange module as the first refrigerant sensor is provided with a drain outlet, wherein the first direction, the second direction and the gravity direction are arranged perpendicular to each other.

17. The indoor unit according to claim 16, wherein: The bottom surface of the first water receiving trough includes a water guide surface connected to the drain outlet, and the water guide surface gradually descends along the third direction from a side of the water guide surface away from the drain outlet to a side close to the drain outlet.

18. A HVAC system, characterized in that: include: compressor; The indoor unit according to any one of claims 13 to 17; Outdoor unit; The throttling component, the compressor, the indoor unit, the throttling component and the outdoor unit are connected in sequence.

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