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, a first refrigerant sensor, a heat exchange header pipe, a protection cover and a flow guide pipe, the first refrigerant sensor is connected with the heat exchange module, and the heat exchange header pipe communicates with the heat exchange module; the heat exchange module comprises a plurality of branch pipe sections which are sequentially communicated, the protection cover is arranged on the connection portion of the adjacent branch pipe sections in a sleeving mode, one end of the flow guide pipe is communicated with the protection cover, and the other end of the flow guide pipe and the refrigerant sensor are located on the same side of the heat exchange module. The refrigerant can be quickly transferred to the first refrigerant sensor on the same side through the flow guide pipe, and the monitoring accuracy and timeliness of the first refrigerant sensor are guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of heating, ventilation and air conditioning (HVAC) systems, and particularly to a heat exchange component, an indoor unit and an HVAC system. Background Art

[0002] A refrigerant leak may occur in a heat exchanger due to its sealing performance. Such a leak can reduce the heat exchange efficiency of the heat exchanger and easily cause safety hazards. Therefore, a refrigerant sensor needs to be installed to monitor whether a refrigerant leak occurs.

[0003] In related technologies, for different types of air conditioners, due to the uncertainty of the specific location of the refrigerant leak point and the diversity of air conditioner installation methods, the relevant installation positions of the refrigerant sensors are not fixed, and are only determined to meet the normal layout requirements of the internal components of the air conditioner. Therefore, for refrigerant leaks at different positions within the heat exchanger, the refrigerant sensors cannot monitor and feedback in a timely and accurate manner, and the reliability of refrigerant monitoring is poor. Summary of the Utility Model

[0004] This application provides a heat exchange component, an indoor unit and an HVAC system, which can quickly identify the refrigerant through the installation position of the refrigerant sensor, thereby increasing the stability of the product.

[0005] In a first aspect, an embodiment of this application provides a heat exchange component, including:

[0006] A heat exchange module;

[0007] A first refrigerant sensor, connected to the heat exchange module and located on one side of the heat exchange module;

[0008] A heat exchange main pipe, communicating with the heat exchange module, the heat exchange main pipe including a plurality of sequentially communicating sub-pipe segments; a protective cover, sleeved on the connection part between adjacent sub-pipe segments; and

[0009] A diversion pipe, one end of the diversion pipe communicating with the protective cover, and the other end of the diversion pipe being on the same side of the heat exchange module as the first refrigerant sensor.

[0010] In some embodiments, the heat exchange component includes a plurality of protective covers and a plurality of diversion pipes, and the plurality of protective covers are connected to the plurality of diversion pipes in a one-to-one correspondence.

[0011] In some embodiments, the protective cover includes a first cover body and a second cover body which are opposite to each other, the first cover body and the second cover body are connected and form a pipe-passing hole for the heat exchange main pipe to pass through therebetween.

[0012] In some embodiments, sound insulation cotton is provided on the inner side wall of at least one of the first cover body and the second cover body.

[0013] In some embodiments, at least two protective covers are connected by a connecting pipe, and the diversion pipe communicates with the protective cover located at the lowermost end along the gravity direction.

[0014] In some embodiments, the heat exchange module includes a heat exchanger, the heat exchanger includes heat exchange tubes, the heat exchange tubes include straight tube segments and bent tube segments that are alternately connected in sequence along their extending direction, the straight tube segments are distributed along a first direction, the bent tube segments are located on one side of the straight tube segments along the first direction, and the first refrigerant sensor is located on one side of the heat exchange module along the first direction;

[0015] And / or, along the direction of gravity, the first refrigerant sensor is located at the bottom end of the heat exchange module, and the direction of gravity is perpendicular to the first direction.

[0016] In some embodiments, at least a part of the main heat exchange pipe is located on one side of the heat exchange module along a second direction and is connected with a protective cover, and the remaining part of the main heat exchange pipe is located on the same side of the heat exchange module as the first refrigerant sensor along the first direction, wherein the second direction is perpendicular to the first direction.

[0017] In some embodiments, the main heat exchange pipe includes:

[0018] A first main heat exchange pipe; and

[0019] A second main heat exchange pipe. Both the first main heat exchange pipe and the second main heat exchange pipe include a plurality of pipe segments, and the first main heat exchange pipe, the second main heat exchange pipe and the heat exchange tubes are communicated to form a refrigerant flow path.

[0020] In some embodiments, the heat exchange assembly further includes:

[0021] A plurality of branch pipes. The heat exchanger includes a plurality of heat exchange tubes. Each branch pipe is connected to one end of each heat exchange tube, and the other end of each branch pipe is communicated with the first main heat exchange pipe. Along the first direction, the plurality of branch pipes and the first refrigerant sensor are located on the same side of the straight tube segments.

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

[0023] A refrigerant distribution pipe. The refrigerant distribution pipe includes a header pipe 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 pipe. The header pipe is communicated with the second main heat exchange pipe. Along the first direction, the refrigerant distribution pipe and the plurality of branch pipes are located on the same side of the straight tube segments.

[0024] In some embodiments, the heat exchange module includes:

[0025] At least two heat exchangers; and

[0026] A first mounting plate connected between two adjacent heat exchangers. The first mounting plate is arranged on one side of the heat exchanger along the first direction;

[0027] Wherein, the first refrigerant sensor is mounted on the first mounting plate.

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

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

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

[0031] In a second aspect, an embodiment of the present application provides an indoor unit, including:

[0032] A housing having an air inlet and an air outlet. Along a third direction, the air inlet and the air outlet are respectively located on opposite sides of the housing; wherein, the first direction is perpendicular to the third direction;

[0033] A first water receiving tray, located inside the housing and on the side where the air inlet of the housing is located along the third direction; and

[0034] The heat exchange assembly as described above, the heat exchange assembly is disposed at the upper end of the first water receiving tray along the third direction.

[0035] In some embodiments, along the third direction, the distance between the first refrigerant sensor and the first water receiving tray is h, and h satisfies: 50 mm ≤ h ≤ 70 mm.

[0036] In some embodiments, the heat exchange module includes two heat exchangers spaced apart along a second direction. The two heat exchangers are inclined with respect to the direction of gravity, and along the direction of gravity, the distance between the two heat exchangers gradually increases, and a ventilation opening is formed on the side of the two heat exchangers close to the air inlet;

[0037] The first water receiving tray surrounds and forms a ventilation channel;

[0038] Wherein, the ventilation opening, the ventilation channel, and the air inlet are communicated along the third direction.

[0039] In some embodiments, the first water receiving tray is formed with an annular water receiving groove. The water receiving groove includes two first water receiving grooves oppositely arranged along the first direction and two second water receiving grooves oppositely arranged along the second direction. The first water receiving grooves and the second water receiving grooves are communicated, and the two heat exchangers are respectively installed in the corresponding two second water receiving grooves; wherein, along the first direction, a drain opening is provided in the first water receiving groove on the same side of the heat exchange module as the first refrigerant sensor, wherein the first direction, the second direction, and the direction of gravity are perpendicular to each other.

[0040] In some embodiments, the bottom surface of the first water receiving groove includes a water guiding surface connecting the drain opening. From the side of the water guiding surface far from the drain opening to the side close to the drain opening, the water guiding surface gradually descends along the third direction.

[0041] In a third aspect, an HVAC system according to an embodiment of the present application includes:

[0042] A compressor;

[0043] An indoor unit as described above;

[0044] An outdoor unit;

[0045] A throttling assembly, and the compressor, the indoor unit, the throttling assembly and the outdoor unit are connected in sequence.

[0046] For the heat exchange component, indoor unit and HVAC system provided by the embodiments of the present application, the heat exchange component includes a heat exchange module, a first refrigerant sensor, a heat exchange main pipe, a protective cover and a diversion pipe. The first refrigerant sensor is connected to the heat exchange module, the heat exchange main pipe communicates with the heat exchange module and includes a plurality of sub-pipe segments connected in sequence. The protective cover is sleeved on the connection of adjacent sub-pipe segments. One end of the diversion pipe communicates with the protective cover, and the other end of the diversion pipe is on the same side as the refrigerant sensor of the heat exchange module. In this way, when there is a refrigerant leakage at the connection of adjacent two sub-pipe segments, the refrigerant can be quickly transferred to the first refrigerant sensor on the same side through the diversion pipe, ensuring the accuracy and timeliness of the monitoring by the first refrigerant sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1 is a schematic structural diagram of the HVAC system provided by the embodiment of the present application;

[0049] Figure 2 is a schematic structural diagram of the indoor unit provided by the embodiment of the present application;

[0050] Figure 3 For the present application Figure 2 is a schematic structural diagram of another perspective of the indoor unit shown;

[0051] Figure 4 For the present application Figure 2 is a schematic structural diagram of yet another perspective of the indoor unit shown;

[0052] Figure 5 is a schematic structural diagram of the heat exchange component provided by the embodiment of the present application;

[0053] Figure 6 is a schematic structural diagram of the connection of the protective cover to the sub-pipe segment provided by the embodiment of the present application;

[0054] Figure 7 Structural schematic diagram of the heat exchanger provided by the embodiment of the present application;

[0055] Figure 8 For the present application Figure 5 Structural schematic diagram of the first perspective of the heat exchange component shown;

[0056] Figure 9 For the present application Figure 5 Structural schematic diagram of the second perspective of the heat exchange component shown;

[0057] Figure 10 For the present application Figure 5 Structural schematic diagram of the third perspective of the heat exchange component shown;

[0058] Figure 11 The present application Figure 10 Enlarged structural schematic diagram of part A in the present application;

[0059] Figure 12 For the present application Figure 5 Structural schematic diagram of the fourth perspective of the heat exchange component shown;

[0060] Figure 13 For the present application Figure 12 Structural schematic diagram of the sectional view along the M-M section of the heat exchange component shown;

[0061] Figure 14 For the present application Figure 5 Structural schematic diagram of the fifth perspective of the heat exchange component shown;

[0062] Figure 15 For the present application Figure 14 Structural schematic diagram of the sectional view along the N-N section of the heat exchange component shown;

[0063] Figure 16 Structural schematic diagram of the first water receiving tray and the second water receiving tray provided by the embodiment of the present application;

[0064] Figure 17 The present application Figure 16 Enlarged structural schematic diagram of part B in the present application;

[0065] Figure 18 For the present application Figure 5 Structural schematic diagram of the sixth perspective of the heat exchange component shown. Description of the drawings:

[0067] 1. Indoor unit;

[0068] 1000. Heat exchange component;

[0069] 100, Heat exchange module; 110, Heat exchanger; 110a, Vent; 111, Heat exchange pipe; 1111, Straight pipe section; 1112, Elbow pipe section; 120, First mounting plate; 120a, Wire passing hole; 123, Elastic shielding part; 130, Second mounting plate; 200, First refrigerant sensor;

[0070] 300, Main heat exchange pipe; 310, Branch pipe section; 320, First main heat exchange pipe; 330, Second main heat exchange pipe;

[0071] 400, Protective cover; 410, First cover body; 420, Second cover body; 400a, Pipe passing hole;

[0072] 500, Diversion pipe;

[0073] 600, Branch pipe;

[0074] 700, Refrigerant distribution pipe; 710, Manifold pipe; 720, Capillary tube;

[0075] 2000, Outer shell; 2000a, Air inlet; 2000b, Air outlet;

[0076] 3000, First water receiving tray; 3000a, Ventilation channel; 3000b, Water receiving trough; 3100b, First water receiving trough; 3200b, Second water receiving trough; 3100, Drainage port; 3200, Water guiding surface;

[0077] 4000, Fan;

[0078] 5000, Second water receiving tray;

[0079] 2, Compressor;

[0080] 3, Outdoor unit;

[0081] 4, Throttling assembly;

[0082] 5, Four-way valve;

[0083] First direction XX; Second direction YY, Third direction ZZ; First central plane JJ; Second central plane KK. Specific embodiments

[0084] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be 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 the present application and are not used to limit the present application.

[0085] Please refer to Figure 1 , the embodiment of the present application provides a heating and ventilation system, which includes systems for heating or cooling such as air conditioners, multi-connected units, heat pumps, etc. The embodiment of the present application does not limit this.

[0086] The HVAC system includes a compressor 2, an indoor unit 1, an outdoor unit 3, and a throttling component 4. The compressor 2, the outdoor unit 3, the throttling component 4, and the indoor unit 1 are connected in sequence. Among them, the compressor 2 is used to compress the refrigerant, the indoor unit 1 and the outdoor unit 3 are used to realize the heat exchange between the refrigerant and the outside world, and the throttling component 4 is used to play a role in throttling and reducing pressure.

[0087] Among them, 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., and no limitation is made thereto. And the HVAC system has a refrigeration mode and a heating mode.

[0088] In the refrigeration mode, the compressor 2 outputs a high-temperature and high-pressure gaseous refrigerant. This high-temperature and high-pressure gaseous refrigerant is transmitted to the outdoor unit 3 and undergoes condensation heat exchange to become a high-pressure and normal-temperature liquid refrigerant. The high-pressure and normal-temperature liquid refrigerant 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. Then, the low-temperature and low-pressure gas-liquid mixed refrigerant enters the indoor unit 1 and undergoes evaporation 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 to complete a complete refrigeration cycle.

[0089] In the heating mode, the compressor 2 outputs a high-temperature and high-pressure gaseous refrigerant. This high-temperature and high-pressure gaseous refrigerant is transmitted to the indoor unit 1 and undergoes condensation heat exchange to become a high-pressure and normal-temperature liquid refrigerant. The high-pressure and normal-temperature liquid refrigerant 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. Then, the low-temperature and low-pressure gas-liquid mixed refrigerant enters the outdoor unit 3 and undergoes evaporation 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 to complete a complete heating cycle.

[0090] It should be noted that the HVAC system may further include a four-way valve 5, and the four-way valve 5 is used to switch the forward and reverse flow directions of the refrigerant. For example, in the refrigeration mode, the flow path of the refrigerant is: compressor 2 - four-way valve 5 - outdoor unit 3 - throttling component 4 - indoor unit 1 - four-way valve 5 - compressor 2; and in the heating mode, the flow path of the refrigerant is: compressor 2 - four-way valve 5 - indoor unit 1 - throttling component 4 - outdoor unit 3 - four-way valve 5 - compressor 2.

[0091] When the HVAC system is operating or on standby, the refrigerant may leak from the heat exchanger 110 due to the sealing performance, which will reduce the heat exchange efficiency of the air conditioner and easily cause potential safety hazards. Therefore, a refrigerant sensor is used to monitor whether the refrigerant leaks, so that relevant personnel can handle the leakage situation in a timely manner. Affected by the distribution of the entire HVAC system pipeline, the pipelines exposed outside the indoor unit 1 and the outdoor unit 3 are likely to diffuse into the air when the refrigerant leaks, affecting the monitoring accuracy of the refrigerant sensor. Also, since the outdoor unit 3 is located outdoors, when the refrigerant leaks, it is also likely to diffuse into the air, thus affecting the monitoring accuracy of the refrigerant sensor. Therefore, the refrigerant sensor is generally installed inside the indoor unit 1.

[0092] Based on this, referring to Figures 2 - 4 , an embodiment of the present application provides an indoor unit 1, which includes a housing 2000, a first water receiving tray 3000, a heat exchange component 1000, and a fan 4000. The indoor unit 1 has two usage states, one is vertical and the other is horizontal. In the embodiment of the present application, the indoor unit 1 is taken as vertical for exemplary illustration.

[0093] The housing 2000, as the appearance component of the indoor unit 1, is used to protect the components inside 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 respectively located on opposite sides of the housing 2000. The external air enters through the air inlet 2000a, and after heat exchange with the heat exchange component 1000, it is discharged through the air outlet 2000b. When the indoor unit 1 is vertical, the third direction ZZ is along the gravity direction.

[0094] The fan 4000 is used to accelerate the flow rate of the external air passing 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;

[0095] The first water receiving tray 3000 is located inside the housing 2000 and can receive the condensed water generated by the heat exchange component 1000 during operation;

[0096] The heat exchange component 1000 is used to exchange heat with the external air entering through the air inlet 2000a. The heat exchange component 1000 includes a heat exchange module 100, and the heat exchange module 100 includes a heat exchanger 110. The heat exchanger 110 includes heat exchange tubes 111, and the heat exchange tubes 111 are used to conduct the refrigerant. The refrigerant circulates inside the heat exchange tubes 111 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 heat exchange tubes 111 of the heat exchange component 1000, thereby absorbing the indoor heat and reducing the indoor temperature. When the air conditioner is heating, the refrigerant condenses and releases heat in the heat exchange tubes 111 of the heat exchange component 1000, thereby releasing heat indoors and increasing the indoor temperature.

[0097] In some embodiments, referring to Figure 5 , the heat exchange assembly 1000 further includes a first refrigerant sensor 200, a heat exchange main pipe 300, a protective cover 400, and a diversion pipe 500.

[0098] The first refrigerant sensor 200 is connected to the heat exchange module 100 and is located on one side of the heat exchange module 100. The first refrigerant sensor 200 is used to monitor the leaked refrigerant.

[0099] The heat exchange main pipe 300 is communicated with the heat exchange module 100, and the refrigerant is output and input through the heat exchange main pipe 300. In order to make the structural layout of the entire heat exchange assembly 1000 compact, the heat exchange main pipe 300 includes a plurality of sub-pipe segments 310 connected in sequence. The plurality of sub-pipe segments 310 include multiple straight pipes and multiple bent pipes. Along the flow direction of the refrigerant, the straight pipes and the bent pipes are alternately connected. Generally, the straight pipes and the bent pipes are connected by pipe connectors or by welding. Affected by the sealing performance, the refrigerant may leak from the connection. The leaked refrigerant may disperse everywhere, making it difficult for the first refrigerant sensor 200 to monitor it, or it may be monitored by the first refrigerant sensor 200 only after a long time of leakage. While affecting the heat exchange efficiency of the entire heat exchange assembly 1000, there are also certain potential safety hazards.

[0100] In order to ensure the accuracy and timeliness of the first refrigerant sensor 200 in monitoring the leaked refrigerant at the connection of two adjacent sub-pipe segments 310, in the embodiment of the present application, the protective cover 400 is sleeved on the connection of the adjacent sub-pipe segments 310. In this way, the leaked refrigerant at the connection of the adjacent sub-pipe segments 310 will flow into the protective cover 400 to avoid dispersing everywhere. One end of the diversion pipe 500 is communicated with the protective cover 400, so that the refrigerant located in the protective cover 400 can flow out along the diversion pipe 500. Since the other end of the diversion pipe 500 and the first refrigerant sensor 200 are on the same side of the heat exchange module 100, in this way, the first refrigerant sensor 200 can quickly and accurately monitor the leaked refrigerant at the connection of the adjacent sub-pipe segments 310, so as to guide the increase of the fan speed to quickly take away the leaked gaseous refrigerant, or guide the user or worker to carry out replacement and repair.

[0101] Further, please continue to refer to Figure 5, Since there may be refrigerant leakage at the connection of adjacent two branch pipe segments 310, it is possible to cover all the connections of adjacent two branch pipe segments 310 with a protective cover 400, or there may be multiple protective covers 400, and multiple protective covers 400 are respectively covered on the connections of adjacent two branch pipe segments 310. In some embodiments of the present application, considering the compact structure of the entire heat exchange assembly 1000, the heat exchange assembly 1000 includes multiple protective covers 400, and multiple protective covers 400 are respectively covered on the connections of adjacent two branch pipe segments 310, and each protective cover 400 is correspondingly connected with a diversion pipe 500, which can set the protective cover 400 at the corresponding connection of the branch pipe segment 310, reduce the space occupied by the protective cover 400, and thus make the entire heat exchange assembly 1000 have a compact structure.

[0102] In some other embodiments, when there are multiple protective covers 400 and they are respectively covered on the connections of adjacent two branch pipe segments 310, at least two protective covers 400 are connected by a connecting pipe, and the diversion pipe 500 communicates with the protective cover 400 located at the lowermost end along the gravity direction. In this way, the number of diversion pipes 500 is simplified, the system structure is more compact and concise, which helps to reduce the manufacturing cost and the maintenance difficulty.

[0103] In addition, since the refrigerant is heavier than air, after the refrigerant leaks, the leaked refrigerant will move downward under the influence of gravity. Therefore, in the embodiments of the present application, the diversion pipe 500 communicates with the protective cover 400 located at the lowermost end along the gravity direction, which can ensure that the leaked refrigerant in multiple protective covers 400 is discharged in time through the diversion pipe 500, thereby ensuring the accuracy and timeliness of the monitoring by the first refrigerant sensor 200.

[0104] Please refer to Figure 6 , the protective cover 400 includes opposite first cover body 410 and second cover body 420. The first cover body 410 is connected to the second cover body 420 and a pipe passing hole 400a for the heat exchange main pipe 300 to pass through is formed therebetween. The first cover body 410 and the second cover body 420 can be connected together by bolts or by a snap connection, which is convenient for the user to install the protective cover 400 on the heat exchange main pipe 300. Similarly, when the first refrigerant sensor 200 detects the leaked refrigerant, it is also convenient to disassemble the first cover body 410 and the second cover body 420, and then it is convenient to repair and maintain the refrigerant leakage.

[0105] In addition, the user can set sound insulation cotton on the inner side wall of the first cover body 410, or set sound insulation cotton on the inner side wall of the second cover body 420, or set sound insulation cotton on the inner side walls of both the first cover body 410 and the second cover body 420. The sound insulation cotton absorbs and isolates the noise generated during the operation of the heat exchange main pipe 300, thereby being able to reduce the noise pollution.

[0106] Specifically, please refer toFigure 7 The heat exchange tube 111 includes a straight tube section 1111 and a bent tube section 1112 that are alternately connected in sequence along its extending direction. The straight tube section 1111 is distributed along the first direction XX, and the bent tube section 1112 is located on one side of the straight tube section 1111 along the first direction XX. The straight tube section 1111 and the bent tube section 1112 form a coiled pipeline. In this way, when the refrigerant passes through the heat exchange tube 111, the heat exchange time with the external space can be increased, thereby improving the heat exchange efficiency.

[0107] The connection between the bent tube section 1112 and the straight tube section 1111 in the heat exchange tube 111 is generally achieved by welding or using a pipe connector. The applicant has found that at the connection between the bent tube section 1112 and the straight tube section 1111, the refrigerant is more likely to leak, which will reduce the heat exchange efficiency of the heat exchanger 110 and easily cause safety hazards.

[0108] Therefore, in the embodiment of the present application, referring to Figure 8 , the first refrigerant sensor 200 is located on one side of the heat exchange module 100 along the first direction XX. In this way, the refrigerant leaking through the connection between the bent tube section 1112 and the straight tube section 1111 of the heat exchange tube 111 can be monitored more quickly by the first refrigerant sensor 200, ensuring the timeliness of refrigerant monitoring.

[0109] Based on the fact that the refrigerant is heavier than air, the refrigerant will sink under the action of gravity. Then, at the bottom end of the heat exchange module 100, the concentration of the refrigerant is relatively high. When the first refrigerant sensor 200 is located at the bottom end of the heat exchange module 100, the refrigerant can be monitored more quickly and accurately.

[0110] To facilitate the description and understanding of the specific structure of the heat exchange assembly 1000, a first direction XX and a second direction YY are defined. Taking Figure 8 the shown orientation as a reference, the first direction XX is the front-back direction, and the second direction YY is the left-right direction. Of course, it can be understood that in some embodiments, the first direction XX can also be the left-right direction, and the second direction YY is the front-back direction. That is, the direction of the first direction XX can be determined according to the visible situation in the actual use state. Some embodiments of the present application will be described by taking the first direction XX as the front-back direction as an example.

[0111] Referring to Figures 8 - 10 , the heat exchange module 100 includes at least two heat exchangers 110 and a first mounting plate 120 connected between adjacent two heat exchangers 110. The at least two heat exchangers 110 are spaced apart along the second direction YY, 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.

[0112] 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. And since the second direction YY is perpendicular to the first direction XX, it can make the arrangement of the heat exchange component 1000 more compact. The first mounting plate 120 can not only connect two adjacent heat exchangers 110, but also ensure the structural stability of the entire heat exchange module 100 after connection.

[0113] In addition, the first mounting plate 120 can provide an installation position for the first refrigerant sensor 200, making the overall heat exchange module 100 a modular structure design. In this way, the subsequent steps of separately installing the first refrigerant sensor 200 are reduced, thereby shortening the overall production cycle and improving production efficiency. At the same time, directly installing the first refrigerant sensor 200 on the heat exchange module 100 can use the structural characteristics of the heat exchange module 100 itself as a positioning reference to ensure the accurate installation position and angle of the first refrigerant sensor 200. This design reduces the performance deviation or failure risk caused by improper on-site installation, and improves the reliability and stability of the product.

[0114] It can be understood that, please refer back to Figure 7 , there are multiple straight pipe sections 1111 and bent pipe sections 1112 for each heat exchange tube 111. The straight pipe sections 1111 are distributed along the first direction XX, and some of the bent pipe sections 1112 are located on the front side of the first direction XX, and the remaining bent pipe sections 1112 are located on the rear side of the first direction XX. Therefore, refrigerant leakage is likely to occur on both the front side and the rear side of the first direction XX. In order to quickly detect the refrigerant, the embodiment of the present application also provides a second refrigerant sensor (not shown in the figure). The second refrigerant sensor and the first refrigerant sensor 200 are respectively arranged on both sides of the straight pipe section 1111 along the first direction XX, and the second refrigerant sensor is also located at the bottom end of the heat exchange module 100. In this way, the leaked refrigerant that will move downward under the influence of gravity can be accurately and quickly detected.

[0115] Furthermore, referring to Figures 9 - 10 , the heat exchange module 100 in the embodiment of the present application further 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 two adjacent heat exchangers 110. The second mounting plate 130 can cooperate with the first mounting plate 120 to more stably connect two adjacent heat exchangers 110. In addition, the second mounting plate 130 can also provide an installation position for the second refrigerant sensor.

[0116] Furthermore, please continue to refer to Figures 9 - 10, when the heat exchange module 100 includes two heat exchangers 110, the two heat exchangers 110 are arranged obliquely with respect to the gravity direction, and along the gravity direction, the distance between the two heat exchangers 110 gradually increases. In this way, the inclined arrangement of the heat exchangers 110 combined with the design of gradually increasing the distance is beneficial to forming a more uniform and effective heat exchange when the air flow passes through the heat exchangers 110. This design enables the air flow to come into contact with the surface of the heat exchangers 110 more fully during the flow process, thereby improving the heat transfer efficiency and accelerating the heating or cooling speed of the indoor air.

[0117] In the indoor unit 1, the leaked refrigerant may pose certain safety hazards, such as refrigerant deflagration. Therefore, when the first refrigerant sensor 200 detects the leaked refrigerant, a signal needs to be transmitted to the controller, and the controller can control and increase the rotational speed of the blower so that the refrigerant converted into a gaseous state can be discharged from the air outlet along with the external air.

[0118] The first refrigerant sensor 200 can be wirelessly connected to the controller or can be signal-connected through an 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.

[0119] For the convenience of routing the electrical connection line, refer to Figures 10 - 11 , the first mounting plate 120 is provided with a wire passing hole 120a, and the electrical connection line passes through the wire passing hole 120a. In order to reduce the possibility that the refrigerant leaking from the front end along the first direction XX leaks to other places through the wire passing hole 120a, thereby reducing the refrigerant concentration at the bottom end of the heat exchange module 100 and further affecting the accuracy and timeliness of the first refrigerant sensor 200 for monitoring the leaked refrigerant, in the embodiment of the present application, an elastic shielding portion 123 surrounding the electrical connection line is provided in the wire passing hole 120a. The elastic shielding portion 123 can tightly wrap the electrical connection line, effectively reducing the possibility of the refrigerant flowing into other places through the wire passing 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 refrigerant concentration, and further being accurately and quickly monitored by the first refrigerant sensor 200.

[0120] The elastic shielding portion 123 can be one or more, and can cover at least a partial area of the cross section of the wire passing hole 120a. Since the elastic shielding portion 123 has elasticity, 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 the leaked refrigerant flowing from the wire passing hole 120a to other places.

[0121] Specifically, the material of the elastic shielding portion 123 can be rubber, silicone, or other elastic materials in the prior art, and no further explanation will be given here.

[0122] When taking the Figures 2 - 4 indicated orientation as a reference, with the first direction XX being the front-back direction and the second direction YY being the left-right direction, please refer to Figures 8 - 9 , in the embodiment of the present application, at least a part of the heat exchange main pipe 300 is located on one side of the heat exchange module 100 along the second direction YY and is connected to a protective cover 400, and the remaining part of the heat exchange main pipe 300 is on the same side of the heat exchange module 100 as the first refrigerant sensor 200 along the first direction XX.

[0123] In some embodiments, at least a part of the heat exchange main pipe 300 can be located on the left or on the right. In this embodiment, at least a part of the heat exchange main pipe 300 is located on the left, and the remaining part is arranged on the front side together with the first refrigerant sensor 200.

[0124] Since at least a part of the heat exchange main pipe 300 is located on one side of the heat exchange module 100 along the second direction YY, the gap between the heat exchange module 100 and the housing can be fully utilized, making the internal structure of the entire indoor unit 1 more compact. Especially when the heat exchanger 110 is inclined, at least a part of the heat exchange main pipe 300 is arranged in the gap between the heat exchange module 100 and the housing along the second (left-right) direction, improving the space utilization rate.

[0125] Based on the connection between the heat exchange main pipe 300 and the heat exchange pipe 111 to realize the inflow or outflow of the refrigerant, that is, there may also be a situation of refrigerant leakage at the connection between the heat exchange main pipe 300 and the heat exchange pipe 111. Therefore, the remaining part of the heat exchange main pipe 300 is arranged on the front side together with the first refrigerant sensor 200. When there is refrigerant leakage through the connection between the heat exchange main pipe 300 and the heat exchange pipe 111, the first refrigerant sensor 200 on the same side can also detect it in time to ensure the continuous normal operation of the heat exchange assembly 1000.

[0126] Please continue to refer to Figures 8 - 9 , the heat exchange main pipe 300 includes a first heat exchange main pipe 320, a second heat exchange main pipe 330, a plurality of branch pipes 600, and a refrigerant distribution pipe 700. Both the first heat exchange main pipe 320 and the second heat exchange main pipe 330 include a plurality of pipe segments. 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. Among them, both the first heat exchange main pipe 320 and the second heat exchange main pipe 330 can be refrigerant inlet pipes or refrigerant outlet pipes. It can be understood that when the first heat exchange main pipe 320 is a refrigerant inlet pipe, the second heat exchange main pipe 330 is a refrigerant outlet pipe, and when the first heat exchange main pipe 320 is a refrigerant outlet pipe, the second heat exchange main pipe 330 is a refrigerant inlet pipe.

[0127] In order to improve the heat exchange efficiency, the heat exchanger 110 generally includes a plurality of heat exchange tubes 111. Each branch pipe 600 is connected to one end of each heat exchange tube 111, and the other end of each branch pipe 600 communicates with the first heat exchange main pipe 320. Along the first direction XX, the plurality of branch pipes 600 and the first refrigerant sensor 200 are located on the same side of the straight pipe section 1111. The refrigerant distribution pipe 700 includes a manifold 710 and a plurality of 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 manifold 710. The manifold 710 communicates with the second heat exchange main pipe 330. Along the first direction XX, the refrigerant distribution pipe 700 and the plurality of branch pipes 600 are located on the same side of the straight pipe section 1111.

[0128] In this way, it can ensure that the refrigerant is evenly distributed among the plurality of heat exchange tubes 111. This uniform refrigerant distribution helps to improve the heat exchange efficiency, reduce the temperature gradient during the heat exchange process, and thus improve the heat exchange performance of the entire heat exchange module 100.

[0129] Based on the fact that the plurality of branch pipes 600 need to be connected to the plurality of heat exchange tubes 111 and there may be refrigerant leakage at the connection between the branch pipes 600 and the heat exchange tubes 111, in the embodiment of the present application, refer to Figures 7 - 8 , along the first direction XX, the plurality of branch pipes 600 and the first refrigerant sensor 200 are located on the same side of the straight pipe section 1111. In this way, after the refrigerant leaked at the connection between the branch pipes 600 and the heat exchange tubes 111 sinks under the action of gravity, the first refrigerant sensor 200 can quickly and accurately detect the leaked refrigerant, facilitating relevant personnel to timely handle the refrigerant leakage situation and ensuring the continuous normal operation of the heat exchange component 1000.

[0130] Similarly, based on the fact that the plurality of capillary tubes 720 need to be connected to the plurality of heat exchange tubes 111 and there may be refrigerant leakage at the connection between the capillary tubes 720 and the heat exchange tubes 111, in the embodiment of the present application, refer to Figure 8 , along the first direction XX, the refrigerant distribution pipe 700 and the first refrigerant sensor 200 are located on the same side of the straight pipe section 1111. In this way, after the refrigerant leaked at the connection between the capillary tubes 720 and the heat exchange tubes 111 sinks under the action of gravity, the first refrigerant sensor 200 can quickly and accurately detect the leaked refrigerant, facilitating relevant personnel to timely handle the refrigerant leakage situation and ensuring the continuous normal operation of the heat exchange component 1000.

[0131] In the embodiment of the present application, since the indoor unit 1 has two usage states, vertical and horizontal, it can thus adapt to a variety of application scenarios. Due to the different usage states of the indoor unit 1, there will also be differences in the setting of the water receiving tray position of the indoor unit 1. In some embodiments, refer to Figures 2 - 4, the first water receiving tray 3000 is located inside the housing 2000 and is on the side where the air inlet 2000a of the housing 2000 is located along the third direction ZZ. This state is the 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.

[0132] In addition, please refer back to Figure 5 , Figure 9 and Figure 10 , the indoor unit 1 also adds a second water receiving tray 5000 to cope with the horizontal use 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.

[0133] In the embodiment of the present application, the second water receiving tray 5000 is communicated with the first water receiving tray 3000. The second water receiving tray 5000 is arranged on the side of the heat exchange component 1000 along the second direction YY. Here, the second direction YY has the same direction as the second direction YY above and will not be elaborated here. The second direction YY is perpendicular to the first direction XX and the third direction ZZ. Taking Figures 9 - 10 the orientation as a reference, the first direction XX can be the front-back direction, the second direction YY can be the left-right direction, and the third direction ZZ can be the up-down direction.

[0134] Next, the specific installation position of the second water receiving tray 5000 will be introduced. The second water receiving tray 5000 is arranged on one side of the heat exchange component 1000 along the second direction YY. Taking Figures 9 - 10 the orientation as a reference (the indoor unit 1 is in the vertical use state), the second water receiving tray 5000 can be arranged on the left side of the heat exchange component 1000 along the left-right direction, or can be arranged on the right side of the heat exchanger 110 along the left-right direction. Some embodiments of the present application will take the second water receiving tray 5000 arranged on the right side of the heat exchange component 1000 along the left-right direction as an example for illustration. It can be understood that when the indoor unit 1 is in the horizontal use state, the second water receiving tray 5000 is on the lower side of the indoor unit 1 along the direction of gravity. At this time, the second direction YY is the direction of gravity, and at least two heat exchangers 110 are spaced apart along the third direction ZZ. At the same time, at least part of the heat exchange main pipe 300 is located on one side of the heat exchange module along the third direction ZZ, and the remaining part of the heat exchange main pipe 300 is on the same side of the heat exchange module as the first refrigerant sensor along the first direction XX.

[0135] By setting the first water receiving tray 3000 and the second water receiving tray 5000 in this solution, that is, whether the indoor unit 1 is used vertically or horizontally, there is a water receiving tray to hold the condensed water, which can ensure the waterproof performance of the indoor unit 1 and expand the application range of the indoor unit 1.

[0136] When used vertically, both the condensate water and the leaked refrigerant will sink under the action of gravity and accumulate in the first water receiving tray 3000. To prevent the first refrigerant sensor 200 from being immersed in the condensate water and liquid refrigerant, please refer to Figures 12 - 13 , so 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 50mm, 55mm, 60mm, 65mm, 70mm or the range composed of any two of them. In this way, it can prevent the first refrigerant sensor 200 from being flooded, thereby ensuring the accuracy and timeliness of the monitoring of the first refrigerant sensor 200.

[0137] 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 inclined relative to the gravity direction, and along the gravity direction, the distance between the two heat exchangers 110 gradually increases. When the indoor unit 1 is in the vertical state, the third direction ZZ is along the gravity direction. When the indoor unit 1 is in the horizontal state, the second direction YY is along the gravity direction. It can be understood that when the indoor unit 1 is in the horizontal state, the heat module 100 is rotated clockwise by 90° relative to the heat exchange module 100 in Figure 11 . At this time, the two heat exchangers 110 are still inclined relative to the gravity direction, and along the gravity direction, the distance between the two heat exchangers 110 gradually increases, and the end with a larger distance corresponds to the second water receiving tray 5000. The embodiment of the present application takes the indoor unit 1 in the vertical state as an example for illustration.

[0138] Please refer to Figures 14 - 15 , two ventilation openings 110a are formed on one side of the two heat exchangers 110 close to the air inlet 2000a. The first water receiving tray 3000 surrounds and forms a ventilation channel 3000a. The ventilation opening 110a, the ventilation channel 3000a, and the air inlet 2000a are communicated along the third direction ZZ. The inclined setting of the heat exchanger 110 and the design with gradually increasing distance are beneficial to forming a more uniform and effective heat exchange when the air flow passes through the heat exchanger 110. This design enables the air flow to come into more sufficient contact with the surface of the heat exchanger 110 during the flow process, thereby improving the heat transfer efficiency and accelerating the heating or cooling speed of the indoor air.

[0139] Due to the inclination and distance change of the heat exchanger 110, the air flow entering the heat exchange module 100 can naturally form a more reasonable distribution while being guided by the heat exchanger 110. This distribution helps to reduce the air flow dead angle, improve the air circulation efficiency of the entire system, and further enhance the heat exchange performance.

[0140] The ventilation channel 3000a formed by surrounding the water receiving tray is connected to the ventilation opening 110a and the air inlet 2000a in the third direction ZZ along the gravity direction, which can improve the drainage performance. In the refrigeration mode, water droplets may condense on the surface of the heat exchanger 110. The inclined heat exchanger 110 helps the water droplets slide rapidly along the gravity direction into the water receiving tray, reducing the wind resistance and energy efficiency loss caused by water droplets staying on the heat exchanger 110, and also avoiding the inconvenience caused by water droplets dripping into the indoor space.

[0141] For the convenience of supporting the heat exchanger 110, refer to Figures 15 - 16 , the first water receiving tray 3000 is formed with an annular water receiving groove 3000b. The water receiving groove 3000b includes two first water receiving grooves 3100b oppositely arranged along the first direction XX and two second water receiving grooves 3200b oppositely arranged along the second direction YY. The first water receiving grooves 3100b and the second water receiving grooves 3200b are connected. The two heat exchangers 110 are respectively installed in the corresponding two second water receiving grooves 3200b. The connectivity of the first water receiving grooves 3100b and the second water receiving grooves 3200b further ensures the uniform distribution and effective collection of condensed water in the entire water receiving groove 3000b, avoiding problems such as local water accumulation or poor water flow.

[0142] The two heat exchangers 110 are installed in the corresponding two second water receiving grooves 3200b, optimizing the layout of the entire heat exchange assembly 1000, making the installation between the heat exchange assembly 1000 and the first water receiving tray 3000 more compact. Moreover, the condensed water on the heat exchanger 110 can also flow along the housing of the heat exchanger 110 into the second water receiving groove 3200b. The condensed water of the elbow sections 1112 at the front end and the rear end in the first direction XX can fall into the first water receiving tray 3000, and the leaked refrigerant can also be received by the first water receiving tray 3000. Through the connected first water receiving grooves 3100b and second water receiving grooves 3200b, it can be ensured that the condensed water and the refrigerant do not flow into the room. At the same time, it ensures the uniform distribution and effective collection of condensed water in the entire water receiving groove 3000b, avoiding problems such as local water accumulation or poor water flow.

[0143] Since the bottom of the heat exchanger 110 is installed in the second water receiving groove 3200b, occupying the middle of the second water receiving groove 3200b, in order to improve the smoothness of drainage, a drain port 3100 is opened in the first water receiving groove 3100b on the same side as the first refrigerant sensor 200 in the heat exchange module 100. Through the drain port 3100, the liquid refrigerant and the condensed water can be discharged in time.

[0144] Please refer to Figure 17 , in order to quickly discharge the liquid refrigerant and the condensed water in the first water receiving groove 3100b, in the embodiment of the present application, refer to Figures 16 - 17, the bottom surface of the first water receiving tank 3100b includes a water guiding surface 3200 connecting to the drain port 3100. From the side of the water guiding surface 3200 away from the drain port 3100 to the side close to the drain port 3100, the water guiding surface 3200 gradually descends along the third direction ZZ. The design of the water guiding surface 3200 enables the liquid in the first water receiving tank 3100b to quickly flow along the water guiding surface 3200 towards the drain port 3100, thus accelerating the drainage process. This natural flow under the guidance of gravity reduces the time required for drainage and improves the drainage efficiency.

[0145] Considering that the indoor unit 1 also has a horizontal usage 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 drained in a timely manner, the second water receiving tray 5000 also has a water guiding surface 3200, as Figure 17 shown. From the side of the water guiding surface 3200 away from the drain port 3100 to the side close to the drain port 3100, the water guiding surface 3200 gradually descends along the second direction YY. In this way, the water guiding surface 3200 of the second water receiving tray 5000 can also quickly drain the condensed water and liquid refrigerant.

[0146] It should be understood that due to the existence of the water guiding surface 3200, the refrigerant will gather towards the drain port 3100. Therefore, the refrigerant concentration at the drain port 3100 is the highest. Therefore, in order to improve the accuracy of refrigerant monitoring, the first refrigerant sensor 200 is arranged at the drain port 3100.

[0147] Specifically, when the indoor unit 1 is in a vertical state, with Figure 18 the shown first direction XX as the front-back direction, the second direction YY as the left-right direction, and the third direction ZZ as the gravity direction, it is defined that the heat exchange module 100 has a first central plane JJ and a second central plane KK. The first central plane JJ and the second central plane KK are perpendicular to each other, and the first central plane JJ is perpendicular to the third direction ZZ, and the second central plane KK is perpendicular to the second direction YY. In this way, the first refrigerant sensor 200 is located below the first central plane JJ and on the right side of the second central plane, while the drain port 3100 is also located at the lower end of the first central plane JJ and on the right side of the second central plane KK. In this way, the first refrigerant sensor 200 can ensure the accuracy and timeliness of refrigerant monitoring.

[0148] When the indoor unit 1 is in a horizontal state, the first direction XX is the front-back direction, the second direction YY is the gravity direction, and the third direction ZZ is the left-right direction. At this time, it is defined that the indoor unit 1 has a first central plane JJ and a second central plane KK (consistent with the first central plane JJ and the second central plane KK in the above). In this way, the first refrigerant sensor 200 is located below the second central plane KK and to the left of the first central plane JJ. At this time, the drain port 3100 is also located below the second central plane KK and to the left of the first central plane JJ. Then, the first refrigerant sensor 200 can ensure the accuracy and timeliness of refrigerant monitoring when the indoor unit 1 is in a horizontal state.

[0149] In the attached drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship described in the attached drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0150] The above is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A heat exchange component, characterized in that: include: Heat exchange module; A first refrigerant sensor is connected to the heat exchange module and is located on one side of the heat exchange module; A heat exchange main pipe, connected to the heat exchange modules, the heat exchange main pipe comprising a plurality of branch pipe sections connected in sequence; A protective cover is sleeved on the connection between the adjacent branch pipe sections; as well as A flow guide pipe, one end of which is connected to the protective cover, and the other end of which is located on the same side of the heat exchange module as the first refrigerant sensor.

2. The heat exchange assembly according to claim 1, characterized in that: The heat exchange assembly includes a plurality of the protective covers and a plurality of flow guide tubes, and the plurality of protective covers are connected to the plurality of flow guide tubes in a one-to-one correspondence.

3. The heat exchange assembly according to claim 1 or 2, characterized in that: The protective cover comprises a first cover body and a second cover body which are opposite to each other. The first cover body is connected to the second cover body and a pipe hole is formed between the first cover body and the second cover body for the heat exchange main pipe to pass through.

4. The heat exchange assembly according to claim 3, characterized in that: The inner side wall of at least one of the first cover body and the second cover body is provided with sound insulation cotton.

5. The heat exchange assembly according to claim 1, characterized in that: At least two of the protective covers are connected via a connecting pipe, and the flow guide pipe is connected to the protective cover located at the lowest end along the gravity direction.

6. The heat exchange assembly according to claim 1, characterized in that: 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 that are alternately connected in sequence along the extension direction thereof, the straight tube section is distributed along a first direction, the curved tube section is located at one side of the straight tube section along the first direction, and the first refrigerant sensor is located at one side of the heat exchange module along the first direction; And / or, along the direction of gravity, the first refrigerant sensor is located at the bottom end of the heat exchange module, and the direction of gravity is perpendicular to the first direction.

7. The heat exchange assembly according to claim 6, characterized in that: At least a portion of the heat exchange main pipe is located on one side of the heat exchange module along the second direction and is connected to the protective cover, and the remaining portion of the heat exchange main pipe is located on the same side of the heat exchange module as the first refrigerant sensor along the first direction, wherein the second direction is perpendicular to the first direction.

8. The heat exchange assembly according to claim 6, characterized in that: The heat exchange main pipe comprises: a first heat exchange header; and The second heat exchange main pipe, the first heat exchange main pipe and the second heat exchange main pipe each include a plurality of the pipe sections, the first heat exchange main pipe, the second heat exchange main pipe and the heat exchange pipes are connected to form a refrigerant flow path.

9. The heat exchange assembly according to claim 8, characterized in that: The heat exchange component also includes: Multiple branch pipes, the heat exchanger includes multiple heat exchange tubes, each branch pipe is connected to one end of each heat exchange tube, and the other end of each branch pipe is connected to the first heat exchange main pipe, along the first direction, the multiple branch pipes and the first refrigerant sensor are located on the same side of the straight pipe section.

10. The heat exchange assembly according to claim 9, characterized in that: The heat exchange component also includes: A refrigerant distribution pipe, the refrigerant distribution pipe includes a header and a plurality of capillaries, one end of each of the capillaries is connected to the other end of each of the heat exchange tubes, the other end of each of the capillaries is connected to the header, the header is connected to the second heat exchange main pipe, along the first direction, the refrigerant distribution pipe and the plurality of branch pipes are located on the same side of the straight pipe section.

11. The heat exchange assembly according to claim 6, characterized in that: The heat exchange module comprises: at least two of said heat exchangers; 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.

12. The heat exchange assembly according to claim 11, characterized in that: The heat exchange component also includes: The electrical connection line is electrically connected to the first refrigerant sensor. The first mounting plate has a wire passing hole. The electrical connection line passes through the wire passing hole. An elastic shielding portion surrounding the electrical connection line is provided in the wire passing hole.

13. The heat exchange assembly according to claim 11, 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.

14. 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 is located in the housing and is located along the third direction on a side of the housing where the air inlet is located; and The heat exchange assembly according to any one of claims 1 to 13, wherein the heat exchange assembly is arranged at an upper end of the first water receiving tray along a third direction.

15. The indoor unit according to claim 14, 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.

16. The indoor unit according to claim 14, characterized in that: The heat exchange module comprises two heat exchangers spaced apart along the second direction, the two heat exchangers are arranged obliquely relative to the gravity direction, and the distance between the two heat exchangers gradually increases along the gravity direction, and the two heat exchangers form a vent on a side close to the air inlet; The first water receiving tray is surrounded to form a ventilation channel; Wherein, the vent, the ventilation channel and the air inlet are connected along the third direction.

17. The indoor unit according to claim 16, 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 on the corresponding two second water receiving grooves; wherein, along the first direction, the first water receiving groove 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.

18. The indoor unit according to claim 17, characterized in that: 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 third direction from a side of the water guiding surface away from the drain outlet to a side close to the drain outlet.

19. A HVAC system, characterized in that: include: compressor; The indoor unit according to any one of claims 14 to 18; 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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