Air conditioner

Abstract

An air conditioner, comprising: a housing, a heat exchanger, a fan assembly, and a controller, wherein the housing is provided with a return air vent and an air outlet. The heat exchanger is arranged in the housing and configured to exchange heat with an airflow flowing therethrough to form a heat-exchanged airflow. The fan assembly is arranged in the housing, and the fan assembly is configured to drive an airflow flowing in from the return air vent to flow to the heat exchanger, exchange heat with the heat exchanger, and then be outputted from the air outlet. The controller is coupled to the fan assembly, and the controller is configured to: compare the actual power of the fan assembly with isostatic pressing power on the basis of a preset isostatic pressing curve, so as to adjust the rotation speed of the fan assembly, wherein the preset isostatic pressing curve is used for determining a preset target rotation speed of the fan assembly corresponding to the isostatic pressing power.

Description

Air conditioner

[0001] This application claims priority to Chinese Patent Application No. 202411354661.4, filed on September 26, 2024; Chinese Patent Application No. 202422357940.8, filed on September 26, 2024; Chinese Patent Application No. 202422357931.9, filed on September 26, 2024; Chinese Patent Application No. 202422360474.9, filed on September 26, 2024; and Chinese Patent Application No. 202411352963.8, filed on September 26, 2024, the contents of all of which are incorporated by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of air conditioning technology, and in particular, to an air conditioner. BACKGROUND

[0003] Air conditioners are commonly used household appliances in people's daily life. There are various types of air conditioners, and ducted air conditioners are widely used because they can meet the temperature adjustment requirements of multiple rooms. The ducted air conditioner can deliver the heat-exchanged airflow to different rooms through multiple air ducts. Since the same ducted air conditioner needs to supply air to multiple rooms during operation, each room is usually equipped with an independent air valve to control the air supply switch. SUMMARY

[0004] To solve at least one of the technical problems existing in the related art, the present disclosure provides an air conditioner that can reduce the static pressure fluctuation and wind noise of the air conditioner to improve the overall performance of the air conditioner.

[0005] An air conditioner is provided, including a housing, a heat exchanger, a fan assembly, and a controller. The housing is provided with an air return port and an air outlet. The heat exchanger is arranged in the housing and between the air return port and the air outlet, and the heat exchanger can exchange heat with the airflow flowing through it to form a heat-exchanged airflow. The fan assembly is arranged in the housing, and the fan assembly can drive the airflow flowing into the air return port to flow to the heat exchanger and output from the air outlet after heat exchange with the heat exchanger. The controller is coupled to the fan assembly. The controller can compare the actual power of the fan assembly with the isostatic pressure power according to a preset isostatic pressure curve to adjust the rotational speed of the fan assembly. The preset isostatic pressure curve is used to determine the preset target rotational speed of the fan assembly corresponding to the isostatic pressure power.

[0006] The air conditioner in some embodiments of the present disclosure controls the operation of the fan assembly according to the preset isobaric pressure table or the preset isobaric pressure curve stored in the memory of the controller. During the operation of the fan assembly at the preset target rotating speed, if the actual power of the fan assembly is different from the corresponding isobaric pressure power, the rotating speed of the fan assembly is adjusted so that the actual power corresponding to the rotating speed of the fan assembly after adjustment matches the isobaric pressure power. In this way, the static pressure in the air duct connected to the fan assembly can be maintained at a relatively constant state, so as to realize the isobaric pressure control of the air conditioner, reduce the static pressure fluctuation of the air conditioner, and reduce the air noise of the air conditioner, thereby improving the overall performance of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0007] FIG. 1 is a structural diagram of an air conditioner according to some embodiments;

[0008] FIG. 2 is another structural diagram of an air conditioner according to some embodiments;

[0009] FIG. 3 is an exploded view of the air conditioner in FIG. 1;

[0010] FIG. 4 is an assembly view of the heat exchange assembly and the fan assembly in FIG. 1;

[0011] FIG. 5 is a partial enlarged view of circle A in FIG. 4;

[0012] FIG. 6 is a structural diagram of the heat exchange assembly in FIG. 1;

[0013] FIG. 7 is a partial enlarged view of circle B in FIG. 6;

[0014] FIG. 8 is a structural diagram of the fan assembly in FIG. 1;

[0015] FIG. 9 is a structural diagram of the return air duct assembly in FIG. 1;

[0016] FIG. 10 is a partial enlarged view of circle C in FIG. 9;

[0017] FIG. 11 is a structural diagram of the second shell in FIG. 1;

[0018] FIG. 12 is yet another structural diagram of an air conditioner according to some embodiments;

[0019] FIG. 13 is a sectional view of FIG. 12 along line D-D;

[0020] FIG. 14 is a partial enlarged view of circle E in FIG. 13;

[0021] FIG. 15 is a structural diagram of the electronic control assembly in FIG. 12;

[0022] FIG. 16 is an assembly view of the water pan and the heat exchanger in FIG. 1; and

[0023] FIG. 17 is a structural diagram of the water pan in FIG. 1. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure will be described clearly and completely with reference to the drawings, obviously, the described embodiments are only part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope protected by the present disclosure.

[0025] Unless otherwise required by context, the term "comprise" and its other forms such as "comprises" and "comprising" are to be construed as open, inclusive, meaning that "comprising" means "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to mean that a particular feature, structure, material or characteristic included in at least one embodiment or example of the present disclosure. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0026] Hereinafter, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0027] In describing some embodiments, "coupled" and "connected" and their derivatives can be used. The term "connected" should be interpreted broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components have direct physical or electrical contact. The term "coupled" or "communicatively coupled" can also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content herein.

[0028] "At least one of A, B, and C" has the same meaning as "at least one of A, B, or C," and includes the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0029] "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0030] The use of "adapted to" or "configured to" herein means open and inclusive language that does not exclude additional devices or steps not explicitly described.

[0031] As used herein, "about," "approximately," or "around" includes the recited value and the average value within an acceptable range of deviation from the recited value, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system).

[0032] As used herein, "parallel," "perpendicular," and "equal" include the recited condition and conditions that approximate the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can have an acceptable range of deviation of, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also have an acceptable range of deviation of, for example, within 5°. "Equal" includes absolute equality and near equality, where near equality can have an acceptable range of deviation of, for example, a difference between the two that is less than or equal to 5% of either.

[0033] During the process of supplying air to each room after the start of the ducted air conditioner, there can be a situation in which individual air valves are closed, which can change the air field parameters in the air duct connected to the ducted air conditioner. In the related art, a fan control method, device, and fan equipment are disclosed, in which the fan equipment adjusts the rotational speed of the fan according to the required power, thereby achieving the requirement of maintaining a constant air volume at the air outlet of different rooms.

[0034] However, in a state in which the ducted air conditioner is controlled to have a constant air volume, if some air valves of the ducted air conditioner are closed or the opening degrees of the air valves in different rooms are different, the static pressure in the air duct can increase, which can generate noise at the air outlet, thereby affecting the overall performance of the air conditioner 1000, and in a severe case, the air duct system can be damaged.

[0035] Therefore, how to reduce the static pressure fluctuation and the air noise of the air conditioner to improve the use reliability of the air conditioner is a technical problem to be solved by the disclosure.

[0036] To solve the above technical problem, some embodiments of the disclosure provide an air conditioner 1000, which controls the operation of the fan assembly according to a preset static pressure table or a preset static pressure curve stored in the controller. During the operation of the fan assembly at a preset target speed, if the actual power of the fan assembly is different from the corresponding static pressure power, the speed of the fan assembly is adjusted so that the actual power corresponding to the speed of the fan assembly after adjustment matches the static pressure power.

[0037] In this way, the static pressure in the air duct connected to the fan assembly can be maintained in a relatively constant state, so as to realize the static pressure control of the air conditioner, reduce the static pressure fluctuation of the air conditioner, and reduce the air noise of the air conditioner, thereby improving the overall performance of the air conditioner.

[0038] In some embodiments, the air conditioner 1000 comprises a compressor configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form high-pressure refrigerant.

[0039] In some embodiments, the air conditioner 1000 further comprises a condenser connected in communication with the outlet of the compressor, and the condenser is configured to release the heat of the refrigerant to the external air to achieve a heating effect.

[0040] In some embodiments, the air conditioner 1000 further comprises an evaporator connected in communication with the inlet of the compressor, and the refrigerant absorbs heat in the external air in the evaporator to achieve a refrigeration effect.

[0041] In some embodiments, the air conditioner 1000 further comprises an expansion valve arranged between the condenser and the evaporator to adjust the pressure and flow of the refrigerant flowing between the condenser and the evaporator.

[0042] In some embodiments of the disclosure, the air conditioner 1000 performs a refrigeration cycle of the air conditioner 1000 by using the compressor, the condenser, the expansion valve and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation. The air conditioner 1000 performs refrigeration or heating on the indoor space through the refrigeration cycle.

[0043] The low-temperature and low-pressure refrigerant enters the compressor, which compresses the low-temperature and low-pressure refrigerant into refrigerant gas in a high-temperature and high-pressure state and discharges it. The refrigerant gas discharged by the compressor flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and in the condensation process, the heat of the refrigerant is released to the surrounding environment through the condensation process.

[0044] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by exchanging heat with a material to be cooled using latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner 1000 can adjust the temperature of the indoor space.

[0045] The outdoor unit of the air conditioner 1000 refers to a portion of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioner 1000 includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0046] The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger serves as a condenser, the air conditioner 1000 serves as a heater in a heating mode, and when the indoor heat exchanger serves as an evaporator, the air conditioner 1000 serves as a cooler in a cooling mode.

[0047] In some embodiments of the disclosure, as shown in FIGS. 1 and 2, the air conditioner 1000 includes a housing 10. The housing 10 is provided with a return air inlet 311 and an air outlet 111.

[0048] In some embodiments of the disclosure, the housing 10 adopts a split design, that is, the housing 10 is divided into a first shell and a second shell, and correspondingly, the air conditioner 1000 is divided into a plurality of independent modules.

[0049] The modular design of the air conditioner 1000 is described below.

[0050] In some embodiments, as shown in FIGS. 1 to 3, the air conditioner 1000 includes a heat exchange assembly 1, the heat exchange assembly 1 is arranged in the housing 10, and the heat exchange assembly 1 is arranged between the return air inlet 311 and the air outlet 111.

[0051] In some embodiments, the heat exchange assembly 1 includes a first shell 11.

[0052] In some embodiments, the heat exchange assembly 1 further includes a heat exchanger 12, the heat exchanger 12 is arranged in the first shell 11. The heat exchanger 12 is configured to exchange heat with the airflow flowing therethrough to form a heat exchanged airflow.

[0053] In some embodiments, the first shell 11 is provided with an air outlet 111, and the airflow exchanged by the heat exchanger 12 can flow out of the air outlet 111.

[0054] In some embodiments, the first shell 11 is further provided with a first communication port 112, which is arranged opposite to the air outlet 111, and the heat exchanger 12 is located between the air outlet 111 and the first communication port 112. The first communication port 112 is further in communication with the air return port 311, and external airflow can enter the first shell 11 through the air return port 311 and the first communication port 112 to exchange heat with the heat exchanger 12.

[0055] In some embodiments, as shown in FIGS. 1-3, the air conditioner 1000 further comprises a fan assembly 2, under the driving action of which, airflow flows into the housing 10 from the air return port 311 and is output from the air outlet 111 after heat exchange through the heat exchange assembly 1.

[0056] In some embodiments, the fan assembly 2 is arranged on the side of the heat exchange assembly 1 close to the air return port 311. For example, the fan assembly 2 is located between the first communication port 112 and the air return port 311 of the heat exchange assembly 1, and the fan assembly 2 is in communication with the first communication port 112.

[0057] In some embodiments, as shown in FIGS. 3 and 8, the fan assembly 2 comprises a mounting support 21, which is detachably connected with the first shell 11.

[0058] In some embodiments, the fan assembly 2 further comprises a motor 22, which is arranged on the mounting support 21.

[0059] In some embodiments, the fan assembly 2 further comprises a volute 23, which is arranged on the mounting support 21 and is in communication with the first communication port 112. The volute 23 is configured to accommodate the motor 22.

[0060] In some embodiments, the fan assembly 2 further comprises a fan 24, which is arranged in the volute 23 and is connected with the rotating shaft of the motor 22.

[0061] In some embodiments, the air conditioner 1000 further comprises an air return duct assembly 3. The air return duct assembly 3 comprises a second shell 31, which is connected with the first shell 11 and is configured to cover the fan assembly 2.

[0062] In some embodiments, the second shell 31 is provided with the air return port 311. The second shell 31 is arranged behind the first shell 11, and the air return port 311 is arranged opposite to and in communication with the air outlet 111.

[0063] In some embodiments of the present disclosure, the air conditioner 1000 adopts a split modular design, so that the heat exchange assembly 1, the fan assembly 2 and the return air duct assembly 3 are independent of each other. In this way, during the assembly process, the mounting support 21 of the fan assembly 2 can be fixedly installed on the first shell 11, and then the second shell 31 of the return air duct assembly 3 can be installed on the first shell 11 and cover the fan assembly 2. In this way, the installation of the air conditioner 1000 is facilitated, and the installation efficiency of the air conditioner 1000 is improved.

[0064] It can be understood that, since the fan assembly 2 is provided with the motor 22, the overall weight of the fan assembly 2 is large. In this case, if the fan assembly 2 and the return air duct assembly 3 are integrated, the volume of the fan assembly 2 will be too large, which is not convenient for the installation of the fan assembly 2. For the fan assembly 2 in some embodiments of the present disclosure, the fan assembly 2 and the return air duct assembly 3 are in a split structure, that is, the fan assembly 2 is separated from the second shell 31, so that the overall volume of the fan assembly 2 is reduced. In this way, although the overall weight of the fan assembly 2 is still large, the volume of the fan assembly 2 is reduced, so that the influence of the volume of the fan assembly 2 on the air conditioner 1000 during the installation process can be reduced, thereby improving the installation convenience of the fan assembly 2.

[0065] In summary, the air conditioner 1000 in some embodiments of the present disclosure can be divided into three independent assemblies, and during the assembly process, the heat exchange assembly 1, the fan assembly 2 and the return air duct assembly 3 can be assembled together. In this way, for the fan assembly 2, the fan assembly 2 is independent of the return air duct assembly 3, so that the overall volume of the fan assembly 2 is reduced, and then the operator can assemble the fan assembly 2 to the heat exchange assembly 1 on the installation site, and then assemble the large-volume return air duct assembly 3 to the heat exchange assembly 1 to cover the fan assembly 2, thereby completing the installation of the air conditioner 1000. In this way, the on-site assembly of the air conditioner 1000 is facilitated under the premise of meeting the modular design, the assembly convenience of the air conditioner 1000 is improved, and the assembly efficiency of the air conditioner 1000 is improved.

[0066] In addition, for the air conditioner 1000, during transportation, the heat exchange assembly 1, the fan assembly 2 and the return air duct assembly 3 can be assembled together for transportation at the factory production stage, or the heat exchange assembly 1, the fan assembly 2 and the return air duct assembly 3 can be independently packaged and transported. In this way, the transportation of the air conditioner 1000 is also facilitated.

[0067] In some embodiments, as shown in FIG. 8, the mounting support 21 is provided with a second communication port 211, the second communication port 211 communicates with the first communication port 112, and the outlet of the volute 23 communicates with the first communication port 112 through the second communication port 211.

[0068] In this way, by arranging the second communication port 211 on the mounting support 21, the outlet of the volute 23 can be conveniently communicated with the first communication port 112 of the first shell 11. During assembly, after the mounting support 21 is assembled to the first shell 11, the first communication port 112 can be arranged opposite the corresponding second communication port 211, so that the airflow output by the outlet of the volute 23 can smoothly enter the first shell 11.

[0069] In summary, in some embodiments of the present disclosure, by arranging the second communication port 211 on the mounting support 21, the second communication port 211 is precisely assembled with the outlet of the volute 23, and then the mounting support 21 is assembled to the first shell 11, so that the cooperation of the second communication port 211 and the first communication port 112 ensures that the volute 23 can smoothly deliver the airflow to the first shell 11.

[0070] In some embodiments, as shown in FIG. 8, the volute 23 includes a volute body 230 connected with the mounting support 21, and the outlet of the volute body 230 is communicated with the first communication port 211. The volute 23 further includes a first extension 231 (for example, an extension) arranged at the outlet of the volute body 230, which sequentially passes through the second communication port 211 and the first communication port 112 and extends into the first shell 11.

[0071] For the volute 23, the first extension 231 is formed at the outlet of the volute body 230. In this way, after the volute 23 is fixedly installed on the mounting support 21, the first extension 231 of the volute 23 will pass through the second communication port 211. Then, after the fixedly installed volute 23 and the mounting support 21 are installed and fixed on the first shell 11, the first extension 231 of the volute 23 will be inserted into the first communication port 112 through the second communication port 211. In this way, it is ensured that the airflow output by the volute 23 can enter the first shell 11.

[0072] In summary, in some embodiments of the present disclosure, by arranging the first extension 231 on the volute body 230 and enabling the first extension 231 to pass through the second communication port 211 and the first communication port 112 and be inserted into the first shell 11, the airflow output by the volute 23 can enter the first shell 11, so as to reduce the occurrence of airflow leakage of the volute 23 and improve the heat exchange efficiency of the heat exchanger 12.

[0073] In some embodiments, in order to facilitate quick assembly of the air conditioner 1000 on site, the following structural improvement design can be made for the assembly mode between the first shell 11, the mounting support 21 and the second shell 31.

[0074] In some embodiments, as shown in FIGS. 4-8, the mounting support 21 is provided with a first pre-assembly portion 212, and the first shell 11 is provided with a first matching portion 113 (e.g., a first pre-assembly matching portion). The first pre-assembly portion 212 and the first matching portion 113 are detachably connected together.

[0075] In some embodiments, the mounting support 21 is provided with a first fixing portion 213, and the first shell 11 is provided with a second matching portion 114 (e.g., a first fixing matching portion). The first fixing portion 213 and the second matching portion 114 are fixedly connected by screws.

[0076] In this way, the first pre-assembly portion 212 cooperates with the first matching portion 113, and the first fixing portion 213 cooperates with the second matching portion 114, facilitating the quick and convenient assembly of the mounting support 21 to the first shell 11.

[0077] During assembly, in order to improve the convenience of assembly, for the mounting support 21 and the first shell 11, the first pre-assembly portion 212 and the first matching portion 113 can be connected first to realize the pre-assembly of the mounting support 21 and the first shell 11. Then, the first fixing portion 213 and the second matching portion 114 are fixedly connected by screws to finally and firmly mount the mounting support 21 to the first shell 11.

[0078] It can be understood that the first pre-assembly portion 212 and the first matching portion 113 can realize the pre-assembly of the mounting support 21 and the first shell 11. During on-site assembly, the operator can first connect the mounting support 21 to the first shell 11, and then fasten it with screws. In this way, on the one hand, the assembly convenience of the air conditioner 1000 is improved, and on the other hand, the use amount of screws can be reduced to improve the assembly efficiency of the air conditioner 1000.

[0079] In summary, through the screw fixing mode, the connection reliability between the mounting support 21 and the first shell 11 can be ensured to meet the requirement for the connection strength between the mounting support 21 and the first shell 11 during use of the air conditioner 1000. Through the connection of the first pre-assembly portion 212 and the first matching portion 113, the air conditioner 1000 can be quickly assembled and combined on site to realize the pre-assembly of the mounting support 21 and the first shell 11, and realize the positioning of the corresponding fixed mounting positions between the mounting support 21 and the first shell 11, so as to facilitate the subsequent fixing of the mounting support 21 and the first shell 11 by screws, thereby improving the assembly efficiency of the air conditioner 1000.

[0080] In some embodiments, the first pre-assembly part 212 is a first tongue arranged on the mounting support 21, which extends towards the first shell 11. The first fitting part 113 is a first slot formed by the first shell 11, and the first tongue is inserted into the first slot.

[0081] The first pre-assembly part 212 adopts the structure of the first tongue, and in assembly, the first tongue can be inserted into the first slot formed by the first shell 11 to realize the pre-assembly of the mounting support 21 to the first shell 11.

[0082] In this way, by using the insertion method, the first tongue can be accurately inserted into the first slot, which can realize the positioning of the relative position between the mounting support 21 and the first shell 11 while meeting the requirements of the pre-assembly of the mounting support 21 and the first shell 11.

[0083] Alternatively, in other embodiments, the first pre-assembly part 212 is a first lap plate arranged on the mounting support 21, which is arranged in a bent manner relative to the mounting support 21. The first fitting part 113 is a first lap surface formed on the first shell 11, and the first lap plate is lapped on the first lap surface.

[0084] The first pre-assembly part 212 adopts the structure of the first lap plate, and in assembly, the first lap part can be lapped on the first lap surface formed by the first shell 11 to realize the pre-assembly of the mounting support 21 to the first shell 11.

[0085] In this way, by using the lapping method, the first lap plate can be lapped on the first shell 11, which improves the convenience of on-site operation, thereby facilitating the operator to quickly pre-assemble and install the mounting support 21 and the first shell 11.

[0086] In some embodiments, in order to facilitate the assembly of the second shell 31 and the first shell 11, the second shell 31 is further provided with a second fixing part 312. The first shell 11 is further provided with a third fitting part 115 (for example, a second fixed fitting part). The second fixing part 312 and the third fitting part 115 are fixedly connected by screws.

[0087] In the installation process of the second shell 31, the second fixing part 312 and the third fitting part 115 can be fixedly connected together by screws, so that the second shell 31 can be firmly and reliably fixedly installed on the first shell 11.

[0088] In this way, by using the screw fixing method, the connection reliability between the second shell 31 and the first shell 11 can be ensured to meet the requirements of the connection strength between the second shell 31 and the first shell 11 during the use of the air conditioner 1000.

[0089] In some embodiments, as shown in FIGS. 9-11, the second shell 31 is further provided with a second pre-assembly part 313, and the mounting support 21 is provided with a fourth matching part 214 (for example, a second pre-assembly matching part). The second pre-assembly part 313 and the fourth matching part 214 are detachably connected together.

[0090] It can be understood that, in order to conveniently and quickly assemble the second shell 31, the second pre-assembly part 313 can be arranged on the second shell 31, and the second pre-assembly part 313 can be connected with the fourth matching part 214 arranged on the mounting support 21 fixed to the first shell 11, so as to realize the pre-assembly of the second shell 31 to the mounting support 21. Then, the second fixing part 312 and the third matching part 115 are fixed together through screws, so as to realize the fixed assembly of the second shell 31 and the first shell 11.

[0091] Through the connection of the second pre-assembly part 313 and the fourth matching part 214, the second shell 31 and the mounting support 21 can be quickly assembled and combined at the installation site, so as to realize the pre-assembly of the mounting support 21 and the second shell 31, and realize the positioning of the corresponding fixed assembly position between the mounting support 21 and the second shell 31, so as to improve the assembly efficiency of the air conditioner 1000.

[0092] In some embodiments, the second pre-assembly part 313 is a clamping groove arranged on the inner wall of the second shell 31, and the fourth matching part 214 is a flange structure arranged on the mounting support 21, and the flange structure is clamped in the clamping groove.

[0093] The second pre-assembly part 313 is a clamping groove formed in the second shell 31, and correspondingly, the fourth matching part 214 is a flange structure arranged on the mounting support 21. In the process of pre-assembling the second shell 31 and the mounting support 21, the second shell 31 can be close to the mounting support 21, and the flange structure can be inserted into the clamping groove, so as to realize the pre-assembly of the second shell 31 and the mounting support 21.

[0094] In the clamping mode, the flange structure and the clamping groove are matched, so that the second shell 31 can be clamped on the mounting support 21 during pre-assembly, thereby improving the convenience of on-site assembly of the air conditioner 1000.

[0095] Alternatively, in other embodiments, the second pre-assembly part 313 is a second lap plate arranged on the second shell 31, and the second lap plate extends to the outside of the second shell 31. The fourth matching part 214 is a second lap surface formed by the mounting support 21, and the second lap plate is lapped on the second lap surface.

[0096] The second pre-assembly part 313 and the fourth matching part 214 can also adopt the lapping mode, that is, the second lap plate is lapped on the second lap surface formed by the mounting support 21.

[0097] The second lap plate can be lapped on the mounting support 21 in a lap manner, improving the convenience of on-site operation, and further facilitating the operator to quickly pre-assemble and install the second shell 31 with the mounting support 21.

[0098] In some embodiments, as shown in FIG. 11, the second shell 31 is provided with a second extension 314 (for example, an extension plate) at each end, and the second extension 314 is provided with a second fixing part 312.

[0099] In some embodiments of the present disclosure, in order to facilitate the fixing and connection of the second shell 31 with the first shell 11, the second shell 31 is provided with a second extension 314 at each side, and the second fixing part 312 is formed on the second extension 314. Since the second shell 31 does not need to bear the weight of the fan assembly 2, the requirement for the load-bearing capacity of the connecting part between the second shell 31 and the first shell 11 is relatively low. The second shell 31 can be connected and fixed with the third matching part 115 on the first shell 11 through the second fixing part 312 provided on the second extension 314 at each side of the second shell 31, which can meet the installation requirement.

[0100] In this way, by providing the second extension 314 and arranging the second fixing part 312 by using the second extension 314, the requirement for screw connection and fixed installation can be met, and the mounting support 21 that has been fixed and installed on the first shell 11 can be avoided, thereby improving the assembly convenience of the air conditioner 1000.

[0101] In some embodiments, as shown in FIGS. 13 to 15, the air conditioner 1000 further comprises an electric control assembly 4, which is arranged in the second shell 31.

[0102] The electric control assembly 4 comprises an electric control box 41, which is arranged in the second shell 31.

[0103] The electric control assembly 4 further comprises an electric control board 42, which is arranged in the electric control box 41. The electric control board 42 is at least coupled with the fan assembly 2.

[0104] In some embodiments of the present disclosure, the electric control assembly 4 is installed in the second shell 31, and the electric control box 41 is installed by using the end position of the second shell 31, so as to meet the installation requirement of the electric control assembly 4.

[0105] In addition, by integrating the electric control assembly 4 in the second shell 31, the return air duct assembly 3 is integrated with the electric control assembly 4, so that the electric control assembly 4 does not need to be separately installed on site during assembly, thereby improving the assembly efficiency of the air conditioner 1000.

[0106] In summary, in the above-mentioned embodiments of the present disclosure, by detachably arranging the fan assembly 2 and the return air duct assembly 3 on the heat exchange assembly 1, and arranging the fan assembly 2 in the return air cavity formed by the return air duct assembly 3, the assembly efficiency of the air conditioner 1000 is improved.

[0107] It can be understood that, as a separate module, the fan assembly 2 can be separately arranged and fixed on the first shell 11, so as to avoid the increase of the assembly difficulty of the fan assembly 2 due to the large volume. After the fan assembly 2 is separately arranged on the first shell 11, the second shell 31 with large volume and light weight is arranged on the first shell 11, so as to reduce the assembly difficulty of the air conditioner 1000 as a whole.

[0108] In some embodiments of the present disclosure, the air conditioner 1000 further comprises a controller 100, which can be integrated in the electric control board 42 in the electric control box 41. The controller 100 is configured to control the start and operation of the fan assembly 2.

[0109] The controller 100 can be a chip or a processor. For example, the processor can be a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or the like. Alternatively, the controller 100 can be a programmable device, including a complex programmable logic device (CPLD), an erasable programmable logic device (EPLD), or a field programmable gate array (FPGA). The chip can be an integrated circuit (IC).

[0110] In some embodiments of the present disclosure, the controller 100 is coupled with the fan assembly 2. During the operation of the fan assembly 2, the controller 100 can adjust the rotating speed of the fan assembly 2 in the way of the isostatic pressure to control the operation of the fan assembly 2, which is described as follows.

[0111] It should be noted that in fluid mechanics, the vertical force per unit area exerted by a fluid is called pressure, and the unit is Pa. When air flows along the inner wall of the air duct of the air conditioner 1000, the pressure generated by the impact of air molecules on the wall due to irregular motion is called static pressure. Static pressure is the potential energy possessed by a unit volume of gas and is a force that manifests itself as compression of the gas and pressure on the wall. The static pressure of the air conditioner 1000 is generally used to overcome system resistance, and the higher the static pressure, the stronger the ability to overcome system resistance, so the better the air supply effect of the air conditioner 1000.

[0112] In some embodiments, the controller 100 is configured to compare the actual power of the fan assembly 2 with the isostatic pressure power according to a preset isostatic pressure curve to adjust the speed of the fan assembly 2. The preset isostatic pressure curve is used to determine the preset target speed of the fan assembly 2 corresponding to the isostatic pressure power.

[0113] It should be noted that the air conditioner 1000 can be pre-set according to its own specifications and the influence of actual installation conditions, and the curve fitted by the power of the fan assembly 2 and the speed of the fan assembly 2 of the air conditioner 1000 under isostatic pressure in the actual running process, i.e., the preset isostatic pressure curve.

[0114] In actual operation, the controller 100 will adjust the speed of the fan assembly 2 according to the preset isostatic pressure curve and the actual power of the fan assembly 2. According to the preset isostatic pressure curve, if it is determined that the actual power of the fan assembly 2 is not the same as the isostatic pressure power, the actual power of the fan assembly 2 is adjusted by adjusting the speed of the fan assembly 2, so that the actual power of the fan assembly 2 is the same as the isostatic pressure power under the corresponding speed.

[0115] The air conditioner 1000 of some embodiments of the present disclosure controls the operation of the fan assembly 2 according to the preset isostatic pressure curve stored in the controller 100, adjusts the speed of the fan assembly 2 in the case where the actual power corresponding to the speed of the fan assembly 2 is different from the isostatic pressure power, so that the actual power corresponding to the speed of the fan assembly 2 after adjustment matches the isostatic pressure power. In this way, the static pressure in the air duct connected to the fan assembly 2 can be maintained in a relatively constant state, so as to realize isostatic pressure control of the air conditioner 1000, reduce the static pressure fluctuation of the air conditioner 1000, and reduce the air noise of the air conditioner 1000, thereby improving the overall performance of the air conditioner 1000.

[0116] In some embodiments, the controller 100 is further configured to control the fan assembly 2 to operate at a preset target rotating speed, and determine whether the actual power of the fan assembly 2 at this time is equal to the corresponding isostatic pressure power. If it is determined that the actual power of the fan assembly 2 is not equal to the corresponding isostatic pressure power, the rotating speed of the fan assembly 2 is adjusted until the rotating speed of the fan assembly 2 is the preset target rotating speed that matches the actual power of the fan assembly 2. If it is determined that the actual power of the fan assembly 2 is equal to the corresponding isostatic pressure power, the rotating speed of the fan assembly 2 is controlled to remain at the preset target rotating speed.

[0117] It should be noted that the preset isostatic pressure curve is used to determine the preset target rotating speed of the fan assembly 2 corresponding to the isostatic pressure power.

[0118] In the actual control process, the isostatic pressure power corresponding to the preset target rotating speed of the fan assembly 2 is obtained according to the preset isostatic pressure curve. In this way, after the fan assembly 2 is started at a set power, the rotating speed of the fan assembly 2 operates at the preset target rotating speed corresponding to the corresponding isostatic pressure power, so that the air duct connected to the air conditioner 1000 can be in a state that the static pressure is relatively constant after the air conditioner 1000 is started.

[0119] In the running process, the static pressure in the air duct changes with the change of the user air volume. In this process, the actual power of the fan assembly 2 will change accordingly. If it is determined that the actual power of the fan assembly 2 at this time is not the same as the isostatic pressure power corresponding to the actual rotating speed of the fan assembly 2, the controller 100 adjusts the rotating speed of the fan assembly 2. The controller 100 adjusts the actual rotating speed of the fan assembly 2 to the corresponding preset target rotating speed according to the corresponding relationship between the isostatic pressure power and the preset target rotating speed in the preset isostatic pressure curve.

[0120] In some embodiments, for the control process according to the isostatic pressure curve, the corresponding formula can be derived according to the isostatic pressure curve formed by fitting, and the controller 100 calculates the rotating speed of the fan assembly 2 according to the derived formula. The process of deriving the formula of the isostatic pressure curve is different for different specifications and use scenarios of different air conditioners 1000.

[0121] It should be noted that the isostatic pressure curve is obtained by measuring a limited number of times, and the power of the fan assembly 2 corresponding to different rotating speeds of the fan assembly 2 is recorded under the condition that the isostatic pressure in the air duct is maintained, so as to finally obtain the isostatic pressure curve and derive the corresponding formula. In this regard, the obtaining of the isostatic pressure curve and the derivation of the formula will not be described here.

[0122] The air conditioner 1000 in some embodiments of the present disclosure controls the fan assembly 2 to operate according to the preset isostatic pressure curve stored in the controller 100. During the process of operating at the preset target speed, if the actual power of the fan assembly 2 is different from the corresponding isostatic pressure power, the speed of the fan assembly 2 is adjusted so that the actual power corresponding to the speed of the fan assembly 2 after adjustment matches the isostatic pressure power. In this way, the static pressure in the air duct connected to the fan assembly 2 can be maintained at a relatively constant state, so as to realize isostatic pressure control of the air conditioner 1000, reduce the static pressure fluctuation of the air conditioner 1000, and reduce the wind noise of the air conditioner 1000, thereby improving the overall performance of the air conditioner 1000.

[0123] In some embodiments, the controller 100 is further configured to, in the case that the power of the fan assembly 2 is the isostatic pressure power, determine the preset target speed of the fan assembly 2 according to the preset isostatic pressure curve, and control the fan assembly 2 to operate at the preset target speed.

[0124] In the starting stage of the air conditioner 1000, the speed of the fan assembly 2 when starting is determined according to the actual power of the fan assembly 2 when starting and the preset isostatic pressure curve, so as to ensure that the static pressure in the air duct can reach the operating requirement of isostatic pressure after the fan assembly 2 operates in the starting stage.

[0125] In this way, in the starting stage of the air conditioner 1000, the preset target speed matching the corresponding isostatic pressure power is determined according to the power of the fan assembly 2 when starting and the isostatic pressure curve, and then the fan assembly 2 operates at the corresponding preset target speed under the power when starting, so as to ensure that the static pressure in the air duct is constant in the starting stage.

[0126] In some embodiments, the controller 100 is further configured to control the fan assembly 2 to operate at the preset target speed, and determine whether the actual power of the fan assembly 2 at this time is equal to the corresponding isostatic pressure power. If it is determined that the actual power of the fan assembly 2 is not equal to the corresponding isostatic pressure power, the speed of the fan assembly 2 is adjusted until the speed of the fan assembly 2 is the preset target speed matching the actual power of the fan assembly 2. If it is determined that the actual power of the fan assembly 2 is equal to the corresponding isostatic pressure power, the speed of the fan assembly 2 is controlled to remain at the preset target speed.

[0127] It should be noted that the isostatic pressure power corresponding to the preset target speed of the fan assembly 2 is obtained by querying the preset isostatic pressure table.

[0128] The air conditioner 1000 of some embodiments of the present disclosure can also obtain the preset target rotating speed corresponding to the isostatic pressure power in the control process by using the look-up table. The preset isostatic pressure table can be preset according to the specifications of the air conditioner 1000 and the actual installation conditions. It can be understood that the power of the fan assembly 2 of the air conditioner 1000 under the isostatic pressure condition and the data table corresponding to the rotating speed of the fan assembly 2, i.e., the preset isostatic pressure table, are obtained in the actual running process of the air conditioner 1000.

[0129] In the running process, the controller 100 adjusts the rotating speed of the fan assembly 2 according to the preset isostatic pressure table and the actual power of the fan assembly 2. According to the preset isostatic pressure table, when the actual power of the fan assembly 2 is different from the isostatic pressure power, the controller 100 adjusts the rotating speed of the fan assembly 2 so that the actual power of the fan assembly 2 under the corresponding rotating speed is the same as the isostatic pressure power.

[0130] The air conditioner 1000 in some embodiments of the present disclosure controls the running of the fan assembly 2 according to the preset isostatic pressure table stored in the controller 100. If the actual power of the fan assembly 2 is different from the corresponding isostatic pressure power during the running of the fan assembly 2 at the preset target rotating speed, the rotating speed of the fan assembly 2 is adjusted so that the actual power corresponding to the adjusted rotating speed of the fan assembly 2 matches the isostatic pressure power. In this way, the static pressure in the air duct connected to the fan assembly 2 can be maintained at a relatively constant state, so as to achieve the isostatic pressure control of the air conditioner 1000, reduce the static pressure fluctuation of the air conditioner 1000, and reduce the wind noise of the air conditioner 1000, thereby improving the overall performance of the air conditioner 1000.

[0131] In some embodiments, the controller 100 is further configured to: in the case that the power of the fan assembly 2 is the isostatic pressure power, query the preset isostatic pressure table to obtain the preset target rotating speed of the fan assembly 2, and control the fan assembly 2 to run at the preset target rotating speed.

[0132] In the starting stage of the air conditioner 1000, the rotating speed of the fan assembly 2 at the start of the fan assembly 2 is determined according to the actual power of the fan assembly 2 at the start and the preset isostatic pressure table, so as to ensure that the static pressure in the air duct can reach the running requirement of the isostatic pressure after the fan assembly 2 runs in the starting stage.

[0133] In this way, in the starting stage of the air conditioner 1000, the preset target rotating speed corresponding to the isostatic pressure power is determined according to the power of the fan assembly 2 at the start and the preset isostatic pressure table, and then the fan assembly 2 runs at the corresponding preset target rotating speed under the power at the start, so as to ensure that the static pressure in the air duct is constant in the starting stage.

[0134] In some embodiments, the actual power of the fan assembly 2 is PT, the actual rotating speed of the fan assembly 2 is NT, and the actual rotating speed of the fan assembly 2 corresponds to an isostatic pressure power P0. The controller 100 is further configured to, after |PT-P0| / P0≥A% and the duration is greater than a first preset time length (i.e., a preset time length), take the preset target rotating speed corresponding to the actual power PT of the fan assembly 2 as a target value of the rotating speed adjustment of the fan assembly 2 to adjust the rotating speed of the fan assembly 2.

[0135] It should be noted that, during the operation of the air conditioner 1000, the air inlet amount of the room will change due to different user needs, which will cause the air pressure in the air duct connected with the air conditioner 1000 to change, and the actual power of the fan assembly 2 will also change accordingly. In this case, the actual power of the fan assembly 2 will be different from the isostatic pressure power corresponding to the current rotating speed of the fan assembly 2, which will cause a large change in the pressure in the air duct connected with the air conditioner 1000. At this time, the actual power of the fan assembly 2 and the preset isostatic pressure curve or the preset isostatic pressure table are used to obtain the adjusted rotating speed value of the fan assembly 2, so as to adjust the rotating speed of the fan assembly 2.

[0136] Since the actual power of the fan assembly 2 will fluctuate during actual control, the actual power cannot always be completely the same as the isostatic pressure power during isostatic pressure control. Therefore, the controller 100 can adjust the rotating speed of the fan assembly 2 after the difference between the actual power of the fan assembly 2 and the isostatic pressure power reaches a preset power difference.

[0137] In this way, after it is determined that the actual power of the fan assembly 2 is different from the isostatic pressure power corresponding to the rotating speed, and the duration in which the actual power is different from the isostatic pressure power is greater than the first preset time length, the controller 100 adjusts the rotating speed of the fan assembly 2 to improve the accuracy of the adjustment of the fan assembly 2, thereby improving the control accuracy. By comparing whether the difference between the actual power and the isostatic pressure power exceeds the preset power difference, and starting the adjustment of the rotating speed of the fan assembly 2 again in the case where the difference exceeds the preset power difference, the rotating speed of the fan assembly 2 can be adjusted less frequently, thereby simplifying the control process.

[0138] In some embodiments, the controller 100 is further configured to, after (PT-P0) / P0≥A% and the duration is greater than the first preset time length, increase the rotating speed of the fan assembly 2 until the rotating speed of the fan assembly 2 is consistent with the preset target rotating speed corresponding to the actual power PT of the fan assembly 2.

[0139] When it is necessary to adjust the fan assembly 2, if the actual power of the fan assembly 2 is greater than the isostatic pressure power corresponding to the current rotating speed, and the duration is greater than the first preset time length, the rotating speed of the fan assembly 2 can be adjusted. At this time, since the actual power of the fan assembly 2 is increased, the rotating speed of the fan assembly 2 can be increased to adjust the rotating speed of the fan assembly 2 to the preset target rotating speed corresponding to the isostatic pressure power matching the actual power value.

[0140] In this way, after the actual power of the fan assembly 2 is greater than the isostatic pressure power, the rotating speed of the fan assembly 2 is increased, so that the rotating speed of the fan assembly 2 is increased until the rotating speed of the fan assembly 2 is the preset target rotating speed corresponding to the actual power of the fan assembly 2, to improve the control accuracy of the fan assembly 2.

[0141] In some embodiments, the controller 100 is further configured to: after (P0-PT) / P0≥A% and the duration is greater than the first preset time length, reduce the rotating speed of the fan assembly 2 until the rotating speed of the fan assembly 2 is consistent with the preset target rotating speed corresponding to the actual power PT of the fan assembly 2.

[0142] When it is necessary to adjust the fan assembly 2, if the actual power of the fan assembly 2 is less than the isostatic pressure power corresponding to the current rotating speed, and the duration is greater than the first preset time length, the rotating speed of the fan assembly 2 can be adjusted. At this time, since the actual power of the fan assembly 2 is small, the rotating speed of the fan assembly 2 can be reduced to adjust the rotating speed of the fan assembly 2 to the preset target rotating speed corresponding to the isostatic pressure power matching the actual power value.

[0143] In this way, after the actual power of the fan assembly 2 is less than the isostatic pressure power, the rotating speed of the fan assembly 2 is reduced, so that the rotating speed of the fan assembly 2 is reduced until the rotating speed of the fan assembly 2 is the preset target rotating speed corresponding to the actual power of the fan assembly 2, to improve the control accuracy of the fan assembly 2.

[0144] In some embodiments, the controller 100 is further configured to: in the case of |PT-P0| / P0≥A% and the duration is less than or equal to the first preset time length, control the rotating speed of the fan assembly 2 to remain at the preset target rotating speed.

[0145] During the operation of the fan assembly 2, users in different rooms may cause the actual power of the fan assembly 2 to change during the adjustment of the air supply amount in the room. If the actual power of the fan assembly 2 changes and is maintained for a short time, the rotating speed of the fan assembly 2 does not need to be adjusted. In this way, in the case that the actual power and the corresponding isostatic pressure power are not the same for a short time, the rotating speed of the fan assembly 2 is not adjusted, which can avoid frequent adjustment of the rotating speed of the fan assembly 2, to simplify the control process.

[0146] In some embodiments, the controller 100 is further configured to, in the case that the actual power of the fan assembly 2 is not the same as the corresponding isostatic pressure power (i.e., |PT-P0| / P0≥A%), and the duration is greater than the first preset time length, adjust the rotating speed of the fan assembly 2 until the rotating speed of the fan assembly 2 is consistent with the preset target rotating speed corresponding to the actual power PT of the fan assembly 2. After the rotating speed of the fan assembly 2 is adjusted for N times continuously, if the actual power of the fan assembly 2 is still not the same as the corresponding isostatic pressure power, and the actual power of the fan assembly 2 exceeds the value range of the isostatic pressure power, the controller 100 controls the air conditioner 1000 to issue an alarm signal. Here, the adjustment of the rotating speed of the fan assembly 2 can be an increase or a decrease.

[0147] During the adjustment of the rotating speed of the fan assembly 2, there is a case that the actual power changes again after the rotating speed of the fan assembly 2 is adjusted and cannot be matched with the isostatic pressure power. At this time, the controller 100 will continue to adjust the rotating speed of the fan assembly 2. In the case that the controller 100 frequently adjusts the rotating speed of the fan assembly 2, but still cannot make the actual power the same as the isostatic pressure power corresponding to the adjusted rotating speed, it is indicated that there is a fault in the air conditioner 1000 or the air duct connected with the air conditioner 1000.

[0148] Therefore, during the adjustment of the fan assembly 2 by the controller 100, if the percentage of the power difference between the actual power of the fan assembly 2 and the isostatic pressure power is greater than or equal to A%, and the actual power of the fan assembly 2 exceeds the value range of the isostatic pressure power and cannot be the same as the isostatic pressure power corresponding to the adjusted rotating speed, it is determined that the air duct system connected with the air conditioner 1000 has a fault (for example, rupture or air leakage), and at this time the controller 100 controls the air conditioner 1000 to issue an alarm prompt. In this way, the damage degree of the components caused by the continuous operation of the air conditioner 1000 is reduced, and the use reliability of the air conditioner 1000 is improved.

[0149] In this way, during the adjustment of the rotating speed of the fan assembly 2, after multiple adjustments, if the actual power of the fan assembly 2 still cannot be the same as the isostatic pressure power corresponding to the adjusted rotating speed, it is determined that the air conditioner 1000 has a fault, and at this time the air conditioner 1000 issues an alarm prompt to reduce the damage degree of the components caused by the continuous operation of the air conditioner 1000, and improve the use reliability of the air conditioner 1000.

[0150] In some embodiments, the air conditioner 1000 further comprises a water collecting tray 13 arranged in the housing 10 and below the heat exchanger 12. For example, the water collecting tray 13 is arranged in the first housing 11. It can be understood that the heat exchanger 12 generates condensate water during use, and the condensate water generated by the heat exchanger 12 will flow to the water collecting tray 13 below. The water collecting tray 13 will collect the condensate water generated by the heat exchanger 12 and discharge it. The condensate water accumulated in the water collecting tray 13 will be blown to the outside of the water collecting tray 13 by the airflow on the leeward side of the heat exchanger 12.

[0151] To solve the above technical problems, some embodiments of the present disclosure make the following structural improvements to the water collecting tray 13.

[0152] As shown in FIGS. 3, 16 and 17, the water collecting tray 13 comprises a water collecting tray body 130, one end of the water collecting tray body 130 is provided with a water outlet 131. The fan assembly 2 is arranged on the windward side of the heat exchanger 12.

[0153] The water collecting tray 13 further comprises a first water blocking portion 132, which is located on the leeward side of the heat exchanger 12 away from the fan assembly 2. The first water blocking portion 132 is configured to store the water in the water collecting tray body 130 that is blown by the airflow and flows towards the second water blocking portion 133.

[0154] The water collecting tray 13 further comprises a second water blocking portion 133, which is located on the leeward side of the heat exchanger 12. The second water blocking portion 133 is configured to block the water in the water collecting tray body 130 that is blown by the airflow and flows towards the air outlet 111.

[0155] In some embodiments of the present disclosure, the first water blocking portion 132 and the second water blocking portion 133 are arranged on the water collecting tray body 130, and the first water blocking portion 132 is arranged closer to the heat exchanger 12 than the second water blocking portion 133. In the direction of airflow, the first water blocking portion 132 can buffer the condensate water flowing to the edge of the water collecting tray body 130, thereby playing a first blocking role for the condensate water. In addition, after part of the condensate water passes the first water blocking portion 132, the condensate water continues to flow towards the edge of the water collecting tray body 130 under the action of the airflow. During the flow of the condensate water, the second water blocking portion 133 will block the condensate water, thereby playing a second blocking role.

[0156] In some embodiments, the first water blocking portion 132 is a recessed structure, the second water blocking portion 133 is a protruding structure, and the first water blocking portion 132 is located between the heat exchanger 12 and the second water blocking portion 133.

[0157] It can be understood that the first water blocking part 132 is in a recessed structure in the water pan body 130. In this way, the water storage function of the first water blocking part 132 can be achieved, and the water flowing through the first water blocking part 132 can be stored in the recessed structure, thereby reducing the amount of condensed water blown by the airflow.

[0158] For the water that partially passes through the first water blocking part 132 or overflows from the first water blocking part 132, under the action of the airflow, it will continue to flow towards the edge of the water pan body 130 close to the air outlet 111, and this part of water will be blocked by the second water blocking part 133.

[0159] In use, through the double blocking of the first water blocking part 132 and the second water blocking part 133, the condensed water blown by the airflow on the leeward side of the heat exchanger 12 and output from the air outlet 111 can be reduced, thereby improving the use reliability of the air conditioner 1000.

[0160] The air conditioner 1000 in some embodiments of the present disclosure sets the first water blocking part 132 and the second water blocking part 133 on the water pan body 130, and arranges the first water blocking part 132 and the second water blocking part 133 on the leeward side of the heat exchanger 12. In use, the first water blocking part 132 can collect and store the condensed water affected by the airflow and flowing on the leeward side of the heat exchanger 12 to provide the first protection for the condensed water blown by the airflow. For the part of the condensed water passing through the first water blocking part 132, the second water blocking part 133 can be used to block it to provide the second protection for the condensed water blown by the airflow. Since the first water blocking part 132 can block most of the condensed water blown by the airflow, the overall height of the second water blocking part 133 can be reduced, which can improve the air outlet efficiency of the air outlet 111 while reducing the amount of condensed water blown by the airflow.

[0161] In some embodiments, the first water blocking part 132 and the second water blocking part 133 are arranged on the water pan body 130 along the length direction of the heat exchanger 12, and the first water blocking part 132 also communicates with the drain port 131. Here, the length direction of the heat exchanger 12 can be the X direction as shown in FIG. 6.

[0162] It can be understood that extending and distributing the first water blocking part 132 and the second water blocking part 133 in the water pan 13 along the length direction of the heat exchanger 12 can improve the water blocking effect, so that the first water blocking part 132 and the second water blocking part 133 can perform water blocking treatment on the condensed water flowing from each part of the heat exchanger 12 in the water pan 13 to improve the water blocking effect.

[0163] In some embodiments, the water pan 13 further comprises a mounting portion 134 (e.g., a mounting groove) disposed on the water pan body 130. The lower portion of the heat exchanger 12 (e.g., the side close to the water pan body 130) is disposed in the mounting portion 134.

[0164] It can be understood that the mounting portion 134 is further disposed in the water pan body 130, which can position the part of the heat exchanger 12 in contact with the water pan body 130, thereby facilitating the assembly of the heat exchanger 12 and the water pan 13. In addition, the mounting portion 134 is arranged at the bottom of the heat exchanger 12 and in contact with the heat exchanger 12, and can also collect the condensed water flowing down the heat exchanger 12 through the mounting portion 134. The condensed water collected by the mounting portion 134 flows to the drain port 131 of the water pan 13 to be discharged through the drain port 131.

[0165] In summary, by disposing the mounting portion 134 in the water pan body 130, on the one hand, the heat exchanger 12 can be fixed and mounted, and on the other hand, the condensed water generated by the heat exchanger 12 can be stored and guided, thereby reducing the amount of condensed water flowing to the leeward side of the heat exchanger 12 and the amount of condensed water dispersed by the air flow.

[0166] In some embodiments, the water pan 13 further comprises a drainage portion 135 (e.g., a flow collection groove) disposed on the water pan body 130, and the drainage portion 135 is located at the end portion where the drain port 131 is located. The drainage portion 135 is in communication with the drain port 131, and the first water retaining portion 132 and the mounting portion 134 are respectively in communication with the drainage portion 135.

[0167] The drainage portion 135 is arranged at the end portion of the water pan body 130 where the drain port 131 is located, and the drainage portion 135 is in communication with the drain port 131. In this way, the condensed water flowing from the first water retaining portion 132 and the mounting portion 134 will converge at the drainage portion 135 and finally be quickly discharged through the drain port 131.

[0168] In summary, by disposing the drainage portion 135 at the end portion of the water pan body 130 to converge the condensed water, the condensed water in the first water retaining portion 132 and the mounting portion 134 flows towards the drainage portion 135, so that the condensed water can flow to one side of the heat exchanger 12 as soon as possible. Since the air flow intensity is small along the length direction of the side of the heat exchanger 12, the influence of the air flow on the condensed water can also be reduced. In addition, the condensed water in the drainage portion 135 can also be quickly discharged from the drain port 131, thereby reducing the storage amount of the condensed water in the water pan 13.

[0169] In some embodiments, as shown in FIG. 16, the air conditioner 1000 further comprises a water level detector 14 disposed on the heat exchanger 12. For example, the water level detector 14 is disposed on the leeward side of the heat exchanger 12.

[0170] The water level detector 14 is configured to detect the water level in the water receiving tray 13. In the case that the water level in the water receiving tray 13 is higher than the set water level due to the fact that the condensate water cannot be timely discharged because of the blockage of the drain port 131, etc., the water level detector 14 will send a signal to the electric control panel 42 to execute corresponding operations such as alarm or shutdown, etc. through the electric control panel 42.

[0171] In this way, the arrangement of the water level detector 14 can realize the detection of the water level in the water receiving tray 13, and trigger the air conditioner 1000 to stop working when the water level exceeds the set value, so as to reduce the occurrence of condensate water overflow, and thus improve the use reliability of the air conditioner 1000.

[0172] In some embodiments, the water level detector 14 is arranged above the drainage portion 135, and the water level detector 14 is arranged between the first water retaining portion 132 and the mounting portion 134.

[0173] For the water in the water receiving tray 13, it will flow to the drainage portion 135 and then flow into the drain port 131 for discharge. Therefore, the water level detector 14 is arranged above the drainage portion 135, and the water level detector 14 judges the water level in the water receiving tray 13 by detecting the water level in the drainage portion 135, so as to improve the accuracy of the water level detection in the water receiving tray 13.

[0174] In summary, by arranging the water level detector 14 above the drainage portion 135, on the one hand, the water level in the water receiving tray 13 can be accurately detected by detecting the water in the drainage portion 135, and on the other hand, by arranging the water level detector 14 on the side of the heat exchanger 12 along the length direction, the influence on the airflow can be reduced, and the influence of the airflow on the water surface of the condensate water can also be reduced.

[0175] In some embodiments, the water level triggering height of the water level detector 14 is less than or equal to the highest water level height of the first water retaining portion 132.

[0176] When the water level detector 14 detects the water level height of the water receiving tray 13 and reaches the water level triggering height, the water level detector 14 will send a signal to the controller 100 of the electric control panel 42, so that the controller 100 in the electric control panel 42 controls the air conditioner 1000 to execute corresponding instructions such as shutdown, alarm, etc.

[0177] During the installation of the water level detector 14, the water level trigger height of the water level detector 14 can be adjusted to be lower than the highest water level of the first water blocking portion 132. In this way, when the water level of the first water blocking portion 132 is higher than the water level trigger height of the water level detector 14, the controller 100 can timely control the air conditioner 1000 to perform corresponding instruction actions, such as shutdown, so as to reduce the occurrence of serious condensate water overflow caused by the high water level in the water pan 13.

[0178] In summary, by setting the water level trigger height of the water level detector 14 to be less than or equal to the highest water level height of the first water blocking portion 132, during use, the wind fan assembly 2 can be prevented from continuing to run to blow away the condensate water when the water level in the water pan 13 is higher than the highest water level of the first water blocking portion 132, so as to improve the overall performance of the air conditioner 1000.

[0179] In some embodiments, as shown in FIG. 17, the water pan 13 is formed with a first surface 136, a second surface 137, and a third surface 138 arranged at intervals. The first surface 136 and the second surface 137 form a mounting portion 134 therebetween, the second surface 137 and the third surface 138 form the first water blocking portion 132 therebetween, and the third surface 138 is located between the second water blocking portion 133 and the first water blocking portion 132.

[0180] In some embodiments, the first surface 136 and the second surface 137 are inclined surfaces respectively, which extend downwardly and inclinedly towards the direction of the drain port 131.

[0181] The first surface 136, the second surface 137, and the third surface 138 are arranged at intervals on the bottom surface of the water pan 13, and the corresponding mounting portion 134 and the first water blocking portion 132 are formed in the water pan 13 between the surfaces arranged at intervals. In addition, the first surface 136, the second surface 137, and the third surface 138 all extend inclinedly towards the direction of the drain port 131, so as to ensure that the condensate water can flow towards the direction of the drain port 131.

[0182] By arranging a plurality of inclined surfaces in the water pan 13, on the one hand, the first water blocking portion 132 and the mounting portion 134 can be formed by the surfaces arranged at intervals, and on the other hand, the condensate water can flow smoothly to the drain port 131 under the action of gravity, so as to improve the drainage efficiency.

[0183] In some embodiments of the present disclosure, for the case that the shell 10 adopts a split design, in order to facilitate the electrical devices in different shells to be connected with the electrical control board 42 in the electrical control box 41, the following structural improvement design is performed.

[0184] As shown in FIG. 3, FIG. 4 and FIG. 15, the air conditioner 1000 comprises a heat exchange device, the heat exchange device comprises a heat exchange assembly 1 and electrical devices, the heat exchange assembly 1 comprises a first shell 11 and a heat exchanger 12, and the first shell 11 is provided with an air outlet 111. The first shell 11 is further provided with a wiring portion outside, the heat exchanger 12 is configured to exchange heat with the airflow flowing therethrough to form a heat exchange airflow, and the electrical devices are located in the first shell 11 and coupled with the wiring portion.

[0185] The air conditioner 1000 further comprises an air supply device, the air supply device comprises a second shell 31, a fan assembly 2 and an electrical control assembly 4, the second shell 31 is provided with an air return port 311, the fan assembly 2 is arranged in the second shell 31, and the fan assembly 2 is communicated with the first shell 11 through a first communication port 112. The electrical control assembly 4 comprises an electrical control box 41 and an electrical control board 42, the electrical control board 42 is arranged in the electrical control box 41, the electrical control box 41 is arranged in the second shell 31, and the electrical control board 42 is further coupled with the fan assembly 2.

[0186] The second shell 31 is detachably arranged in the first shell 11, and the wiring portion is configured to be coupled with the electrical control board 42 outside the first shell 11 through a cable.

[0187] In this way, the first shell 11 of the heat exchange device is provided with the wiring portion, and the wiring portion is located outside the first shell 11 to enable the electrical devices in the first shell 11 to be connected outside the first shell 11.

[0188] In some embodiments, as shown in FIG. 6, the first shell 11 is further provided with a first plug-in terminal 116 as the wiring portion, the heat exchanger 12 is located between the air outlet 111 and the first communication port 112, the heat exchanger 12 is configured to exchange heat with the airflow flowing therethrough to form a heat exchange airflow, and the electrical devices are located in the first shell 11 and coupled with the first plug-in terminal 116.

[0189] For the heat exchange device, the heat exchange device is provided with the heat exchanger 12 and the electrical devices in the first shell 11, and the electrical devices in the first shell 11 are internally connected with the first end of the first plug-in terminal 116 through an electric wire in advance. The second end of the first plug-in terminal 116 is exposed outside the first shell 11 to facilitate connection outside the first shell 11.

[0190] In some embodiments, as shown in FIG. 15, for the air supply device, the electrical control box 41 is provided with a second opening 413 (for example, a wire port). The second shell 31 is detachably arranged in the first shell 11, the first plug-in terminal 116 is located in the second opening 413, and the first plug-in terminal 116 is coupled with the electrical control board 42 through a cable.

[0191] In the assembling process, after the second shell 31 is assembled to the first shell 11, the electrical devices inside the first shell 11 can be coupled with the electric control board 42 through the cable outside the first shell 11. In this way, in the assembling process, the electrical devices in the first shell 11 can be coupled with the electric control board 42 without the need of wiring inside the first shell 11, but only by connecting the first plug-in terminal 116 with the electric control board 42 through the cable outside the first shell 11.

[0192] By providing the first plug-in terminal 116 outside the first shell 11 of the heat exchange device, the electrical devices in the heat exchange device are connected with the first plug-in terminal 116 inside the first shell 11 in advance through the wire. When the operator assembles on site, after the second shell 31 is assembled with the first shell 11, the wire does not need to be drawn from the first shell 11, but the cable is connected between the first plug-in terminal 116 and the electric control board 42 outside the first shell 11 to complete the connection of the circuit, thereby facilitating on-site assembly and improving the convenience of assembly.

[0193] In some embodiments, the electric control board 42 is provided with a second plug-in terminal, and the two ends of the cable are respectively provided with a first plug-in head. The first plug-in head at the first end of the cable is inserted into the first plug-in terminal 116, and the first plug-in head at the second end of the cable is inserted into the second plug-in terminal.

[0194] It can be understood that the two ends of the cable are respectively provided with a first plug-in head, and the electric control board 42 is correspondingly provided with a second plug-in terminal. The first plug-in head is inserted between the corresponding first plug-in terminal 116 and the second plug-in terminal, which can conveniently and quickly connect the cable to facilitate the operator to quickly plug and assemble on site.

[0195] In some embodiments, the first end of the cable is provided with a second plug-in head, the second plug-in head is inserted into the first plug-in terminal 116, and the second end of the cable is coupled with the electric control board 42.

[0196] In this way, the first end of the cable is connected with the first plug-in terminal 116 by using the second plug-in head, and the second end of the cable can be connected by wire, for example, the second end of the cable has a terminal lug to be installed on the terminal post of the electric control board 42.

[0197] It can be understood that the plug-in head is used to realize the plug-in assembly with the plug-in terminal, which can realize the plug-in operation of the cable without the aid of tools during the plug-in process, thereby improving the convenience of assembly.

[0198] In some embodiments, as shown in FIG. 11, the air conditioner 1000 further comprises a support plate 32, which is arranged in the second shell 31, and the support plate 32 is arranged vertically (Y direction shown in FIG. 9). The electric control box 41 is located on one side of the support plate 32, and the fan assembly 2 is located on the other side of the support plate 32.

[0199] The support plate 32 is arranged in the second shell 31, and the fan assembly 2 and the electric control box 41 can be spaced apart by the support plate 32. The electric control box 41 will be installed on one side of the support plate 32.

[0200] It can be understood that by arranging the support plate 32 in the second shell 31, on the one hand, the support plate 32 can improve the structural strength of the second shell 31 itself, and on the other hand, the support plate 32 can also separate two spaces in the second shell 31 to respectively place the electric control box 41 and the fan assembly 2.

[0201] In some embodiments, as shown in FIG. 11, the air conditioner 1000 further comprises a support frame 33, which is arranged at one end of the second shell 31, and the support frame 33 is arranged outside the support plate 32, that is, on the side away from the fan assembly 2. The electric control box 41 is arranged on the support frame 33.

[0202] The end of the second shell 31 is also provided with the support frame 33, which can meet the installation requirements of the electric control box 41 fixedly installed on the second shell 31. For example, the electric control box 41 can be fixedly installed on the support frame 33 by screws.

[0203] By increasing the support frame 33 at the end of the second shell 31, on the one hand, the support frame 33 can also enhance the structural strength of the second shell 31 at the end of the second shell 31, and on the other hand, the support frame 33 can also meet the installation requirements of the electric control box 41 to facilitate the assembly of the electric control box 41 on the second shell 31.

[0204] In some embodiments, as shown in FIG. 11 and FIG. 15, the support plate 32 is provided with a first opening 321 (for example, a heat dissipation opening). The electric control box 41 is provided with a heat sink 43, the heat sink 43 penetrates the electric control box 41, the heat sink 43 is in thermal conduction connection with the electric control board 42, and the end of the heat sink 43 extending out of the electric control box 41 passes through the first opening 321 and is arranged on one side of the fan assembly 2.

[0205] In the working process, the electric control box 41 is in a closed state, and the electric control board 42 is powered on to generate heat. Therefore, the heat of the electric control board 42 can be absorbed by the heat sink 43 and conducted to the outside of the electric control box 41. The part of the heat sink 43 located outside the electric control box 41 is arranged on one side of the fan assembly 2 through the first opening 321. In this way, the heat sink 43 can be cooled in time by using the airflow generated by the fan assembly 2 in the working process, so as to ensure that the electric control board 42 can work stably.

[0206] By arranging the first opening 321 on the support plate 32, the heat sink 43 can extend to the area where the fan assembly 2 is located through the first opening 321. The heat sink 43 uses the airflow generated by the fan assembly 2 to dissipate heat, so that the heat sink 43 can quickly release the heat generated by the electric control board 42 in time and efficiently, so as to ensure that the electric control board 42 can work smoothly.

[0207] In some embodiments, as shown in FIG. 15, the electric control box 41 includes a box body 411 arranged in the second shell 31, for example, the box body 411 is arranged in the support frame 33. The box body 411 is provided with an access hole and a second opening 413 (for example, a wire port).

[0208] The electric control box 41 further includes a maintenance cover 412 which is detachably connected with the box body 411, and the maintenance cover 412 is arranged at one end of the second shell 31. For example, the maintenance cover 412 is detachably arranged at the access hole.

[0209] In some embodiments of the present disclosure, the electric control box 41 includes the box body 411 and the maintenance cover 412, and the maintenance cover 412 can cover the access hole arranged on the box body 411, so as to facilitate the maintenance of the electric control assembly 4 in the later period. The access hole is arranged at the end position of the second shell 31 and covered by the maintenance cover 412. When maintenance is needed, the maintenance cover 412 can be detached to open the access hole, and the components such as the electric control board 42 in the box body 411 can be maintained.

[0210] In some embodiments, the access hole is arranged at the end of the box body 411 away from the fan assembly 2, and the second opening 413 is arranged on the side wall of the box body 411 opposite to the first shell 11. When the maintenance cover 412 is opened, the first plug-in terminal 116 arranged on the first shell 11 is arranged at the second opening 413, and then the disassembly and assembly of the cable on the first plug-in terminal 116 can be completed from the box body 411, so as to improve the convenience of assembly and maintenance.

[0211] In this way, by arranging the detachable maintenance cover 412 on the box body 411 of the electric control box 41, on one hand, the maintenance cover 412 can be opened during maintenance to facilitate maintenance by the operator, and on the other hand, by opening the maintenance cover 412, the second opening 413 of the side wall of the box body 411 can be exposed, and then the cable assembly of the first plug-in terminal 116 can be completed during assembly to improve the convenience of assembly and maintenance.

[0212] In some embodiments, the performance entity of the electrical device installed in the first shell 11 can have various forms, for example, the electrical device includes at least one of a temperature sensor, a water level detector 14 or a drain pump.

[0213] Correspondingly, the first shell 11 is provided with a plurality of first plug-in terminals 116, and the electrical device is connected with the corresponding first plug-in terminal 116.

[0214] By configuring a plurality of first plug-in terminals 116, the wiring requirements of electrical devices of different functional types are met, on one hand, the unified wiring in the first shell 11 is realized, and on the other hand, the efficiency of on-site assembly is improved by connecting different first plug-in terminals 116 with the electric control panel 42 through different cables by the on-site operator.

[0215] In some embodiments, the air supply device can be designed as an integrated structure, or the air supply device can also be designed as a split modular structure.

[0216] For example, in the case of an integrated structure design of the air supply device, the second shell 31 is provided with a fan bracket, the motor 22 and the volute 23 are arranged on the fan bracket, and the fan 24 is arranged on the rotating shaft of the motor 22 and located in the volute 23.

[0217] By arranging the fan bracket in the second shell 31, the installation requirements of the fan assembly 2 in the second shell 31 can be met, so that the fan assembly 2 is concentratedly installed in the second shell 31 to meet the requirement of the air supply device as an integrated modular structure.

[0218] Alternatively, the fan assembly 2 includes the installation support 21, the motor 22, the volute 23 and the fan 24, the installation support 21 is arranged in the first shell 11, the motor 22 and the volute 23 are arranged on the installation support 21, and the fan 24 is arranged on the rotating shaft of the motor 22 and located in the volute 23.

[0219] For the case of split modular design of the air supply device, the fan assembly 2 can be independent of the second shell 31 and independently assembled and fixed to the first shell 11, and for this purpose, the fan assembly 2 is configured with the installation support 21, and the motor 22, the volute 23 and the fan 24 and other components are concentratedly assembled on the installation support 21, and the fan assembly 2 is fixedly installed on the first shell 11 through the installation support 21.

[0220] By setting the mounting support 21, the modular design of the fan assembly 2 can be met, so that the motor 22, the volute 23 and the fan 24 and other components are assembled on the mounting support 21, so that the motor 22, the volute 23 and the fan 24 and other components are assembled with the first shell 11 through the mounting support 21. In this way, the overall size of the fan assembly 2 is small, which facilitates the on-site assembly of the fan assembly 2 on the first shell 11 by the operator.

[0221] It can be understood that, for the electric control assembly 4, since the electric control board 42 generates heat during operation and needs to be cooled by the heat sink 43. During the cooling process, the heat of the heat sink 43 will be taken away by the airflow flowing back through the return air inlet 311. In the refrigeration mode, the temperature of the airflow of the return air inlet 311 is low, and the airflow of the return air inlet 311 cools the heat sink 43, which may cause the temperature of the heat sink 43 to drop below the dew point temperature.

[0222] Since the heat sink 43 is in thermal contact with the electric control board 42, when the temperature of the heat sink 43 is lower than the dew point temperature, the temperature of the part of the electric control board 42 in thermal contact with the heat sink 43 in the electric control box 41 will be below the dew point temperature, which will cause condensation on the surface of the electric control board 42.

[0223] In order to solve the problem of condensation on the surface of the electric control board 42 in the refrigeration mode, the electric control assembly 4 further comprises a heating part 45, which is arranged on the heat sink 43. The heating part 45 can heat the heat sink 43 after being powered on.

[0224] As shown in FIGS. 13-15, the electric control assembly 4 further comprises a temperature sensing component 46, which is arranged on the heat sink 43. The temperature sensing component 46 is configured to detect the temperature of the heat sink 43.

[0225] In some embodiments, the controller 100 is further configured to control the heating part 45 to be powered on or off according to the temperature of the heat sink 43 detected by the temperature sensing component 46, so that the temperature of the heat sink 43 is higher than the dew point temperature.

[0226] In use, the air conditioner 1000 is in the refrigeration mode, and the temperature of the return air flow of the return air inlet 311 is lower than the temperature of the outside air, and the humidity of the return air flow is also lower than the humidity of the outside air. The return air flow flows through the heat sink 43 to cool the heat sink 43, so as to cool the electric control board 42 in the electric control box 41 through the heat sink 43.

[0227] When the temperature of the return air decreases and the temperature of the heat sink 43 is lower than the dew point temperature, the heat sink 43 is in thermal conduction with the electric control panel 42, and the temperature of the electric control panel 42 in thermal conduction with the heat sink 43 is substantially the same as the temperature of the heat sink 43. At this time, the temperature of the corresponding part of the electric control panel 42 is lower than the dew point temperature, and thus condensation is generated on the electric control panel 42.

[0228] The temperature sensing component 46 on the heat sink 43 can detect the temperature of the heat sink 43. The temperature sensing component 46 is configured to detect the temperature of the heat sink 43 and transmit a detected temperature signal to the controller 100 to control the on-off of the heating part 45 by the controller 100. The temperature sensing component 46 transmits the detected temperature signal to the controller 100 on the electric control panel 42, and the controller 100 controls the on-off of the heating part 45 according to the temperature signal detected by the temperature sensing component 46.

[0229] That is, after the temperature sensing component 46 detects that the temperature of the heat sink 43 is lower than the dew point temperature, the controller 100 can control the heating part 45 to be powered on as needed to perform auxiliary electric heating treatment on the heat sink 43 by the heating part 45. In this way, the temperature of the heat sink 43 can be increased to ensure that the temperature of the electric control panel 42 is not lower than the dew point temperature, and thus condensation can be prevented from being generated on the electric control panel 42 in the electric control box 41.

[0230] In this way, by configuring the temperature sensing component 46 on the heat sink 43, the temperature sensing component 46 can check the temperature of the heat sink 43. In use, in the refrigeration mode, the temperature of the airflow returned through the return air inlet 311 gradually decreases, and thus the temperature of the heat sink 43 decreases. When the temperature of the heat sink 43 is lower than the dew point temperature, the heating part 45 can be started to heat the heat sink 43 by being powered on, so as to increase the overall temperature of the heat sink 43, and thus the temperature of the heat sink 43 is higher than the dew point temperature. In this way, condensation can be avoided from being generated on the surface of the electric control panel 42 in thermal conduction with the heat sink 43 due to the temperature of the heat sink 43 being lower than the dew point temperature, and thus electrical failure of the electric control panel 42 caused by condensation generated in the electric control box 41 can be avoided, and the operation reliability of the air conditioner 1000 is improved.

[0231] In some embodiments, the controller 100 is further configured to control the heating part 45 to be powered on to heat when the temperature sensing component 46 detects that the temperature of the heat sink 43 is lower than the dew point temperature and the duration is greater than a second preset time length.

[0232] During the detection of the temperature of the heat sink 43 by the temperature sensing component 46 to control the operation of the heating part 45, when the temperature of the heat sink 43 is lower than the dew point temperature, condensation is not immediately generated on the electric control panel 42, and there is a phenomenon that the temperature of the heat sink 43 is lower than the dew point temperature for a short time and then rises again.

[0233] In order to avoid the controller 100 frequently starting and stopping the heating part 45, in the control process, when the temperature of the heat sink 43 detected by the temperature sensing part 46 is continuously lower than the dew point temperature and the time of maintaining is more than the second preset time stored in the controller 100, the controller 100 controls the heating part 45 to start to heat the heat sink 43 by the heating part 45.

[0234] By delaying the heating part 45 to start to heat by the controller 100, it can ensure that the heating part 45 starts to heat after the temperature of the heat sink 43 is continuously lower than the dew point temperature for the second preset time, which can not only ensure that the heat sink 43 can be heated in time to avoid the condensation of the electric control board 42, but also avoid the controller 100 frequently starting and stopping the heating part 45, so as to improve the use reliability of the heating part 45.

[0235] In some embodiments, after the heating part of the motor 22 is powered on, the controller 100 is further configured to: control the heating part 45 to be powered off when the temperature of the heat sink 43 detected by the temperature sensing part 46 is higher than the dew point temperature and the difference between the temperature of the heat sink 43 and the dew point temperature is greater than a preset temperature difference.

[0236] After the temperature of the heat sink 43 is lower than the dew point temperature and the heating part 45 is started, when the temperature of the heat sink 43 is higher than the dew point temperature during the heating process of the heat sink 43 by the heating part 45, the heating part 45 can be turned off. Similarly, in order to avoid the heating part 45 frequently starting and stopping, when the temperature of the heat sink 43 is higher than the dew point temperature and the temperature difference is greater than the preset temperature difference, the controller 100 controls the heating part 45 to be powered off.

[0237] In this way, by controlling the heating part 45 to heat the heat sink 43 to a temperature higher than the dew point temperature by a set temperature difference, it can ensure that after the heating part 45 is turned off, the heat sink 43 has enough heat to exchange with the return air flow of the return air inlet 311, which can prolong the time for the heat sink 43 to be cooled again to below the dew point temperature, so as to avoid the controller 100 frequently starting and stopping the heating part 45, thereby improving the use reliability of the heating part 45.

[0238] In some embodiments, the controller 100 is further configured to: calculate the corresponding dew point temperature according to the ambient temperature of the air conditioner 1000.

[0239] The controller 100 will be affected by external environmental factors when controlling the air conditioner 1000 to run. Therefore, the actual dew point temperature of the heat sink 43 will change under different external environmental conditions. Therefore, the controller 100 will calculate the dew point temperature of the heat sink 43 according to the ambient temperature of the air conditioner 1000 in the control process, so as to improve the accuracy of controlling the heating part 45 to be powered on.

[0240] It should be noted that for different environmental conditions, the dew point temperature calculation method can be used in the related art dew point temperature calculation method.

[0241] In some embodiments, the air conditioner 1000 further comprises a support plate 32, which is arranged in the shell 10, and the support plate 32 is provided with a first opening 321. The electric control box 41 is arranged on one side of the support plate 32, and the fan assembly 2 is arranged on the other side of the support plate 32. The electric control box 41 and the support plate 32 form a heat insulation space 44, and the heat sink 43 is inserted into the first opening 321.

[0242] The support plate 32 is arranged in the shell 10 to isolate the fan assembly 2 and the electric control box 41, and the electric control box 41 is arranged apart from the support plate 32 to form a heat insulation space 44. The heat insulation space 44 can reduce the heat dissipation of the return air flow to the electric control box 41, thereby reducing the possibility of causing the overall temperature inside the electric control box 41 to decrease and condensation to occur.

[0243] The heat sink 43 is inserted into the first opening 321 and extends to the other side of the support plate 32 to be close to the fan assembly 2 to ensure that the heat sink 43 can rely on the airflow converged into the fan assembly 2 for heat dissipation during the operation of the fan assembly 2.

[0244] By arranging the support plate 32 in the shell 10, on the one hand, the support plate 32 can isolate the electric control box 41 and the fan assembly 2, and on the other hand, the heat insulation space 44 formed between the support plate 32 and the electric control box 41 can reduce the influence of the return air flow on the electric control box 41, thereby improving the use reliability of the air conditioner 1000.

[0245] In some embodiments, the heat sink 43 is arranged on the inlet side of the volute 23. At least part of the airflow flowing from the return air inlet 311 enters the inlet of the volute 23 after flowing through the heat sink 43.

[0246] After the heat sink 43 penetrates and extends from the first opening 321 of the support plate 32, the end of the heat sink 43 will be located on the side of the inlet of the volute 23 in the fan assembly 2. During the return air flow back to the inlet of the volute 23, part of the return air flow will flow through the heat sink 43 to perform heat dissipation on the heat sink 43.

[0247] By arranging the heat sink 43 on the inlet side of the volute 23, it can be ensured that the return air flow can flow through the heat sink 43 to perform heat dissipation on the heat sink 43.

[0248] In some embodiments, a heat insulation layer is arranged in the heat insulation space 44 and surrounds the outer periphery of the heat sink 43. The heat insulation layer is made of heat insulation material, such as heat insulation cotton, heat insulation pad, etc. The arrangement of the heat insulation layer can improve the heat insulation effect of the heat insulation space 44, so as to prevent the cold of the return air flow from being conducted into the electric control box 41 through the heat insulation layer.

[0249] By arranging the heat insulation layer between the electric control box 41 and the support plate 32, the heat insulation layer can improve the heat insulation effect of the heat insulation space 44, so as to reduce the cold of the return air flow from being conducted into the electric control box 41, reduce the temperature in the electric control box 41 from being reduced below the dew point temperature, and further reduce the condensation in the electric control box 41, thereby improving the use reliability of the air conditioner 1000.

[0250] It should be noted that any one of the technical solutions disclosed in the present disclosure can solve one or more of the above technical problems and achieve certain disclosed purposes to some extent; multiple technical disclosures can also be combined into one overall scheme to solve one or more of the above technical problems and achieve certain disclosed purposes; or part of the technical disclosures can be combined into one overall scheme, while related technologies and degraded schemes are used, but the degraded trend can be compensated by the technical disclosure means, and the overall technical problems and certain disclosed purposes can be solved to some extent; each technical disclosure is combined into a complete technical scheme, which constitutes an organic and indivisible overall scheme, and solves the technical problems and achieves certain disclosed purposes.

[0251] Any technical disclosure in the present disclosure, and the recombination of multiple technical disclosures can form a complete technical scheme, and can solve one or more of the above technical problems to achieve the disclosed purposes, which belongs to the content of the present disclosure and is directly and without doubt determined according to the content of the present disclosure.

[0252] Those skilled in the art will understand that the scope of the disclosure of the present disclosure is not limited to the above specific embodiments, and some elements of the embodiments can be modified and replaced without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. An air conditioner comprising: a housing provided with an air return opening and an air outlet opening; a heat exchanger arranged in the housing and capable of exchanging heat with an air flow passing through to form a heat exchanged air flow; a fan assembly arranged in the housing, the fan assembly being capable of driving an air flow flowing into the housing through the air return opening to flow to the heat exchanger and being capable of outputting the air flow from the air outlet opening after heat exchange with the heat exchanger; a controller coupled to the fan assembly; the controller being configured to compare an actual power of the fan assembly with an isostatic pressure power according to a preset isostatic pressure curve to adjust a rotational speed of the fan assembly; wherein the preset isostatic pressure curve is used to determine a preset target rotational speed of the fan assembly corresponding to the isostatic pressure power.

2. The air conditioner of claim 1, wherein, the controller being further configured to: determine the preset target rotational speed of the fan assembly according to the preset isostatic pressure curve when the power of the fan assembly is the isostatic pressure power, and control the fan assembly to operate at the preset target rotational speed.

3. The air conditioner according to claim 1 or 2, wherein an actual power of the fan assembly being PT, an actual rotational speed of the fan assembly being NT, and an actual rotational speed of the fan assembly corresponding to an isostatic pressure power being P0; the controller being further configured to: after |PT-P0| / P0≥A% and a duration being greater than a preset time length; regulate the rotational speed of the fan assembly by taking the preset target rotational speed corresponding to the actual power PT of the fan assembly as a target value of the rotational speed regulation of the fan assembly.

4. The air conditioner of claim 3, wherein, the controller being further configured to: after (PT-P0) / P0≥A% and the duration being greater than the preset time length; increase the rotational speed of the fan assembly until the rotational speed of the fan assembly is consistent with the preset target rotational speed corresponding to the actual power PT of the fan assembly.

5. The air conditioner of claim 3, wherein, the controller being further configured to: after (P0-PT) / P0≥A% and the duration being greater than the preset time length; decrease the rotational speed of the fan assembly until the rotational speed of the fan assembly is consistent with the preset target rotational speed corresponding to the actual power PT of the fan assembly.

6. The air conditioner of claim 3, wherein, the controller being further configured to: after |PT-P0| / P0≥A% and the duration being less than or equal to the preset time length; control the rotational speed of the fan assembly to remain at the preset target rotational speed.

7. The air conditioner of claim 3, wherein, the controller being further configured to: after |PT-P0| / P0≥A% and the duration being greater than the preset time length; after regulating the rotational speed of the fan assembly for N times continuously, if |PT-P0| / P0≥A% and the actual power of the fan assembly exceeds a value range of the isostatic pressure power, control the air conditioner to send an alarm signal.

8. An air conditioner comprising: a housing provided with an air return opening and an air outlet opening; a heat exchanger arranged in the housing and capable of exchanging heat with an air flow passing through to form a heat exchanged air flow; a fan assembly arranged in the housing, the fan assembly being capable of driving an air flow flowing into the housing through the air return opening to flow to the heat exchanger and being capable of outputting the air flow from the air outlet opening after heat exchange with the heat exchanger; a controller coupled to the fan assembly; the controller being configured to: control the fan assembly to operate at a preset target rotating speed, and determine whether the actual power of the fan assembly is equal to the corresponding isostatic pressure power; if the actual power of the fan assembly is not equal to the corresponding isostatic pressure power, adjust the rotating speed of the fan assembly until the rotating speed of the fan assembly is the preset target rotating speed that matches the actual power of the fan assembly; if the actual power of the fan assembly is equal to the corresponding isostatic pressure power, control the rotating speed of the fan assembly to remain at the preset target rotating speed; wherein the preset isostatic pressure curve is used to determine the preset target rotating speed of the fan assembly corresponding to the isostatic pressure power.

9. The air conditioner of claim 8, wherein, The controller is further configured to: determine the preset target rotating speed of the fan assembly according to the preset isostatic pressure curve in the case that the power of the fan assembly is the isostatic pressure power, and control the fan assembly to operate at the preset target rotating speed.

10. The air conditioner according to claim 8 or 9, wherein The actual power of the fan assembly is PT, the actual rotating speed of the fan assembly is NT, and the actual rotating speed of the fan assembly corresponds to the isostatic pressure power P0; The controller is further configured to: after |PT-P0| / P0≥A% and the duration is greater than a preset time length; take the preset target rotating speed corresponding to the actual power PT of the fan assembly as a target value for adjusting the rotating speed of the fan assembly, and adjust the rotating speed of the fan assembly.

11. The air conditioner of claim 10, wherein, The controller is further configured to: after (PT-P0) / P0≥A% and the duration is greater than the preset time length; increase the rotating speed of the fan assembly until the rotating speed of the fan assembly is consistent with the preset target rotating speed corresponding to the actual power PT of the fan assembly.

12. The air conditioner of claim 10, wherein, The controller is further configured to: after (P0-PT) / P0≥A% and the duration is greater than the preset time length; decrease the rotating speed of the fan assembly until the rotating speed of the fan assembly is consistent with the preset target rotating speed corresponding to the actual power PT of the fan assembly.

13. The air conditioner of claim 10, wherein, The controller is further configured to: in the case that |PT-P0| / P0≥A% and the duration is less than or equal to the preset time length; control the rotating speed of the fan assembly to remain at the preset target rotating speed.

14. The air conditioner of claim 10, wherein, The controller is further configured to: after |PT-P0| / P0≥A% and the duration is greater than the preset time length; after adjusting the rotating speed of the fan assembly continuously N times, if |PT-P0| / P0≥A% and the actual power of the fan assembly exceeds the value range of the isostatic pressure power, control the air conditioner to send an alarm signal.

15. An air conditioner, comprising: a housing, the housing being provided with an air return port and an air outlet port; a heat exchanger, disposed in the housing, and capable of exchanging heat with the airflow flowing therethrough to form a heat exchanged airflow; a fan assembly, disposed in the housing, capable of driving the airflow flowing into the housing from the air return port to flow to the heat exchanger, and output from the air outlet port after heat exchange with the heat exchanger; a controller, coupled with the fan assembly; the controller is configured to: The controller is further configured to: In the case that the power of the fan assembly is the isostatic pressure power, the controller is configured to query the preset isostatic pressure table to obtain the preset target rotating speed of the fan assembly, and control the fan assembly to operate at the preset target rotating speed. The actual power of the fan assembly is PT, the actual rotating speed of the fan assembly is NT, and the isostatic pressure power corresponding to the actual rotating speed of the fan assembly is P0. The controller is further configured to:

16. The air conditioner of claim 15, wherein, After |PT-P0| / P0≥A% and the duration is greater than the preset time length; The controller is further configured to:

17. The air conditioner of claim 15 or 16, wherein, After (PT-P0) / P0≥A% and the duration is greater than the preset time length; The controller is further configured to: After (P0-PT) / P0≥A% and the duration is greater than the preset time length; The controller is further configured to:

18. The air conditioner of claim 17, wherein, After |PT-P0| / P0≥A% and the duration is less than or equal to the preset time length; The controller is further configured to: After |PT-P0| / P0≥A% and the duration is greater than the preset time length; 19. The air conditioner of claim 17, wherein, After continuously adjusting the rotating speed of the fan assembly for N times, if |PT-P0| / P0≥A% and the actual power of the fan assembly exceeds the value range of the isostatic pressure power, the controller controls the air conditioner to send an alarm signal. ​ ​ 20. The air conditioner of claim 17, wherein, ​ ​ ​ 21. The air conditioner of claim 17, wherein, ​ ​ ​

Images