Air Conditioner

Abstract

The utility model discloses an air conditioner in the technical field of ventilation devices. The air conditioner comprises an indoor unit and an outdoor unit. A newly added electric control box is arranged on the outdoor unit, and the electric control high-voltage part of the indoor unit is connected and arranged in the newly added electric control box. In the present application, the electric control high-voltage part of the indoor unit is moved to the outdoor unit by means of physical isolation. When a flammable refrigerant leaks in the indoor unit, it will not contact the high-voltage part here, thus avoiding accidents. Moreover, since the outdoor unit is located in an open environment with good air circulation, even if a refrigerant leaks in the outdoor system, it is easy to spread. Moreover, the outer shell of the outdoor unit is made of metal, which is non-flammable and has a higher safety factor than that of the indoor unit.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation devices, in particular to an air conditioner. Background Art

[0002] According to the current environmental protection needs, household air conditioners using environmentally friendly refrigerants R32 / R290 are currently being vigorously promoted and used. These two refrigerants have low GWP values ​​and little air pollution, but because they are alkane refrigerants, they are flammable. R32 (CH2F2) difluoromethane belongs to the A2 safety level and is flammable; R290 (C3H8) propane belongs to the A3 safety level and is highly flammable. With the large-scale listing of flammable refrigerant air conditioners, the number of cases of air conditioner indoor unit combustion in end-user homes is also increasing year by year. Indoor combustion accidents will cause significant property losses and casualties, and the consequences are relatively serious. Through investigation and tracing, the root causes of indoor unit combustion include the strong electric ignition of the indoor unit electronic control causing the surrounding combustibles to burn, and the rupture of the copper tube of the air conditioner evaporator causing the flammable refrigerant to leak into the indoor unit electronic control box. The local concentration of the flammable refrigerant in the indoor unit electronic control box reaches the upper limit, and the flammable refrigerant ignites when the strong electric components of the electronic control fail or short-circuit ignition, causing a combustion accident.

[0003] A large amount of survey data shows that any combustion accident involving the indoor unit of the air conditioner is basically caused by the ignition of the strong electricity of the indoor unit's electronic control. Therefore, the indoor unit's electronic control is crucial to the safety of the air conditioner, especially for air conditioners that use flammable refrigerants. If the flammable refrigerant leaks in the evaporator system of the indoor unit of the air conditioner and spreads to the electronic control box and accumulates, there will be major safety hazards.

[0004] The existing household air conditioner, whether it is a wall-mounted split unit or a floor-standing cabinet, has an internal electronic control box adjacent to the evaporator. Figure 1 It can be seen from the schematic diagram of the structural layout of the wall-mounted split unit that the evaporator and the indoor electronic control box are closely attached to each other, with a very small spacing in between, and many welding points of the end copper tube assembly of the evaporator are just on one side of the electronic control box. The weak points of the evaporator that are prone to leakage are precisely these welding points. If the connection points are not welded well, there are cold welds, leaking welds, and overburning, they can easily cause refrigerant leakage at the welding points. After the refrigerant leaks, it evaporates into gas in the air and can easily penetrate into the electronic control box through the gaps. Since the electronic control box involves many sets of wiring harnesses, it is difficult to achieve complete sealing, and it is also difficult to avoid gas penetration. Therefore, in the prior art, the electronic control box and the evaporator are in the same shell, and there will definitely be a risk of leakage, ignition, and combustion for flammable refrigerants; even if it is a non-flammable refrigerant, there is a risk of spontaneous combustion due to failure, short circuit, and aging of the high-voltage components in the electronic control box. Utility Model Content

[0005] In order to overcome the problem of burning of the indoor unit of the existing air conditioner, especially the air conditioner using flammable refrigerant, due to strong electric ignition of the indoor unit electronically controlled, the utility model provides an air conditioner.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The air conditioner comprises an indoor unit and an outdoor unit. A newly added electric control box is arranged on the outdoor unit, and the electric control high-voltage part of the indoor unit is connected and arranged in the newly added electric control box.

[0008] In this application, the indoor unit's electronic control high-voltage part is moved to the outdoor unit by means of physical isolation. When flammable refrigerant leaks from the indoor unit, it will not come into contact with the high-voltage part here, thus avoiding accidents. Moreover, since the outdoor unit is located in an open environment with good air circulation, even if refrigerant leaks from the outdoor system, it is easy to spread. Moreover, the outdoor unit's outer casing is made of metal, which is non-flammable and has a higher safety factor than the indoor unit.

[0009] Obviously, the existing outdoor unit is equipped with components such as a fan and an outdoor unit electric control box. The location of the newly added electric control box here should meet basic requirements such as no interference. Technical personnel in this field can arrange the newly added electric control box according to the outdoor unit structure in implementation.

[0010] The high-voltage part of the indoor unit electronic control here can be understood by technical personnel in this field, including switching power supply transformers, fuses, relays and other components; while the receiving board and Internet gateway for the indoor unit remote control are low-voltage and there is no risk of fire, so they can still be designed to be placed in the indoor unit without affecting the user's operating experience.

[0011] In some embodiments, a fan is provided on one side of the interior of the outdoor unit, a fan outlet is provided on one side of the front panel of the outdoor unit correspondingly, and a newly added electric control box is fixedly provided on the side of the front panel of the outdoor unit away from the fan outlet.

[0012] In this embodiment, based on the existing outdoor unit structure, the fan is generally arranged on the left side of the outdoor unit, a condenser and pipelines are arranged behind the outdoor unit, and there are outdoor unit wiring and piping connections on the right side panel. The newly added electric control box is preferably arranged on the front panel of the outdoor unit, specifically, on the side of the front panel of the outdoor unit away from the fan outlet.

[0013] In some embodiments, a fresh air receiving chamber is arranged on the inner or outer side of the side wall of the outdoor unit away from the fan, and a shutter is provided on the outer wall of the fresh air receiving chamber to connect to the external space of the outdoor unit; it also includes a first heat dissipation duct and a second heat dissipation duct, the first heat dissipation duct connects the fresh air receiving chamber and the newly added electric control box, and the second heat dissipation duct connects the newly added electric control box and the negative pressure area formed by the rotation of the fan.

[0014] In this embodiment, the existing design is based on the fact that the ambient temperature of the outdoor unit is higher than that of the indoor unit, and the heat generated by the outdoor unit's electronic control device is higher than that of the indoor unit's electronic control device. Therefore, the existing outdoor unit's electronic control device is often designed with a radiator, and the temperature resistance level of the device selection should also be higher than that of the indoor unit's electronic control device to improve safety performance. In this application, the high-voltage part of the indoor unit is moved to the outdoor unit, and the heat dissipation of the newly added electronic control box must also be considered. Obviously, measures such as adding a radiator or improving the device selection can be adopted as implemented by the existing outdoor unit's electronic control device. Here, based on cost considerations, it is preferred to introduce fresh air for heat dissipation, and introduce fresh air by forming negative pressure through the outdoor unit fan to meet the heat dissipation requirements of the newly added electronic control box. It is easy to implement and has low cost.

[0015] In some embodiments, an outdoor unit electric control cover is provided on the side wall of the outdoor unit away from the fan, and a through hole is provided at the bottom of the outdoor unit electric control cover for the power line of the indoor unit electric control high-voltage part to pass through.

[0016] In this embodiment, the power line of the indoor unit electric control strong electric part, that is, the power line corresponding to the newly added electric control box, is inserted through the outdoor unit electric control cover plate arranged on the side wall of the outdoor unit away from the fan, so as to facilitate implementation. Further, the outdoor unit electric control cover plate can be implemented as a detachable connection on the side wall of the outdoor unit for easy maintenance.

[0017] In some embodiments, a fresh air receiving chamber is formed between the external unit electrical control cover and the side wall of the outdoor unit, the power cord of the high-voltage part of the internal unit electrical control is inserted into the fresh air receiving chamber, and is connected to a newly added electrical control box through a first heat dissipation guide tube.

[0018] In this embodiment, as implemented above, the first heat dissipation guide pipe is not only used for guiding fresh air, but also has the function of threading the newly added electric control box.

[0019] In some embodiments, the outdoor unit electrical control cover is separated into two parts by a partition, a fresh air receiving chamber is formed between the lower part and the side wall of the outdoor unit, and the upper part is connected to the internal space of the outdoor unit to shield the wiring part of the outdoor unit.

[0020] In this embodiment, the above implementation enables the electric control cover of the external unit to have three functions: shielding the wiring part of the external unit, threading the wires of the newly added electric control box, and forming a fresh air accommodating chamber.

[0021] In some embodiments, a sound insulation board is provided on one side of the fan close to the newly added electric control box, and one end of the second heat dissipation guide tube is fixed on the first accommodating cavity, and the other end is fixed on the sound insulation board.

[0022] In this embodiment, in the prior art, a sound insulation board is always provided on the side of the fan close to the electric control cover of the external unit, that is, the side close to the newly added electric control box, and the second heat dissipation guide pipe is preferably fixed on the sound insulation board without the need for an additional mounting structure. Further, it can be implemented as opening a hole on the sound insulation board for the second heat dissipation guide pipe to pass through and guide to the negative pressure area formed by the rotation of the fan.

[0023] In some embodiments, the newly added electric control box is formed by the protrusion of the front panel of the outdoor unit, and an electric control box baffle is provided in the newly added electric control box to shield and isolate the high-voltage electric control part of the indoor unit and the internal space of the outdoor unit.

[0024] In this embodiment, the front panel of the outdoor unit is convex to form a newly added electric control box, which has good waterproof performance and is safe and reliable; and the convex formation does not affect the original layout of the internal components of the outdoor unit, which is easy to implement.

[0025] In some embodiments, a new electric control box is provided on the outside of the front panel of the outdoor unit, and the new electric control box is embedded in the outside of the front panel of the outdoor unit. An electric control box baffle is provided in the new electric control box to shield and isolate the high-voltage electrical part of the indoor unit and the internal space of the outdoor unit.

[0026] In this embodiment, another implementation method of adding a new electric control box is provided. Similar to the previous scheme, the new electric control box is arranged on the outside of the front panel of the outdoor unit, which does not affect the original layout of the internal components of the outdoor unit and is easy to implement; the new electric control box is embedded in the front panel of the outdoor unit, which has little impact on the processing and manufacturing process of the front panel, and the new electric control box can be implemented as a detachable connection for easy maintenance.

[0027] The beneficial effects of the utility model are:

[0028] 1. Use the method of physical isolation to move the high-voltage electrical parts of the indoor unit to the outdoor unit. When the flammable refrigerant leaks from the indoor unit, it will not come into contact with the high-voltage electrical parts here and cause an accident. Moreover, since the outdoor unit is located in an open environment with good air circulation, even if the refrigerant leaks from the outdoor system, it is easy to spread. Moreover, the outer shell of the outdoor unit is made of metal, which is non-flammable and has a higher safety factor than the indoor unit.

[0029] 2. The newly added electric control box is set on the outside of the front panel of the outdoor unit, which does not affect the original layout of the internal components of the outdoor unit, is easy to implement, and does not affect the installation space of the outdoor unit.

[0030] 3. The electric control cover of the external unit is designed so that it can take into account the three functions of shielding the wiring part of the external unit, threading the new electric control box and forming a fresh air accommodating chamber.

[0031] 4. Fresh air is introduced through the negative pressure formed by the operation of the outdoor fan, which is easy to implement and does not require additional measures such as radiators, thus avoiding cost increases.

[0032] 5. The power cord of the indoor unit's electronic control high-voltage part is inserted into the fresh air receiving chamber, and connected to the newly added electric control box through the first heat dissipation guide tube, so that the first heat dissipation guide tube is not only used for fresh air diversion, but also has the function of threading the newly added electric control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the position of the evaporator and the indoor unit electric control in the prior art indoor unit;

[0034] Figure 2 The structure of the outdoor unit of the prior art is shown in FIG. Figure 1 ;

[0035] Figure 3 The structure of the outdoor unit of the prior art is shown in FIG. Figure 2 ;

[0036] Figure 4 A schematic diagram of the structure of an outdoor unit of an air conditioner provided by the utility model;

[0037] Figure 5 The utility model is a schematic structural diagram of an electric control cover plate on an outdoor unit of an air conditioner.

[0038] Marked in the figure, 1-indoor unit, 2-evaporator, 3-indoor unit electric control box, 100-outdoor unit, 101-outdoor unit top plate, 102-front panel, 103-outdoor unit electric control cover, 104-outdoor unit electric control box, 105-fan, 106-sound insulation board, 107-second heat dissipation guide pipe, 108-newly added electric control box, 109-electric control box baffle, 110-first heat dissipation guide pipe. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings.

[0040] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0041] like Figure 1-5 As shown, Figure 1-Figure 3 A schematic diagram of an indoor unit 1 and an outdoor unit 100 in the prior art is shown; Figure 4 and Figure 5 The focus is on demonstrating the improvements made in this embodiment over the prior art.

[0042] In the prior art, whether it is a wall-mounted split unit or a floor-standing cabinet unit, the internal electrical control box 3 is adjacent to the evaporator 2. Figure 1It can be seen from the schematic diagram of the structural layout of the wall-mounted split unit that the evaporator 2 and the indoor electrical control box 3 are closely attached to each other, with a very small spacing in between, and many welding points of the end copper tube assembly of the evaporator 2 are just on one side of the indoor electrical control box 3. The weak points of the evaporator 2 where leakage is prone to occur are precisely these welding points. If the connection points are not welded well, there are cold welds, leaking welds, and overburning, it is easy to cause refrigerant leakage at the welding points. After the refrigerant leaks, it evaporates into gas in the air and can easily penetrate into the indoor electrical control box 3 through the gap. Since the indoor electrical control box 3 involves many sets of wiring harnesses, it is difficult to achieve complete sealing, and it is also difficult to avoid gas penetration. Therefore, in the prior art, the indoor electrical control box 3 and the evaporator 2 are in the same shell, and there must be a risk of leakage, ignition, and combustion of flammable refrigerants.

[0043] The present application provides an air conditioner, comprising an indoor unit 1 and an outdoor unit 100 . A newly added electric control box 108 is provided on the outdoor unit 100 , and the electric control high-voltage part of the indoor unit 1 is connected and provided in the newly added electric control box 108 .

[0044] In the present application, the indoor unit's electronically controlled high-current part is moved to the outdoor unit 100 by means of physical isolation. When flammable refrigerant leaks from the indoor unit 1, it will not come into contact with the high-current part here and cause an accident. Moreover, since the outdoor unit 100 is located in an open environment with good air circulation, even if a refrigerant leak occurs in the outdoor system, it is easy to spread. Moreover, the outer shell of the outdoor unit 100 is made of metal and is non-flammable, so its safety factor is higher than that of the indoor unit 1.

[0045] Obviously, the existing outdoor unit 100 is provided with components such as a fan 105 and an outdoor unit electric control box 104. The upper part of the outdoor unit 100 is an outdoor unit top plate 101, and the front is a front panel 102 of the outdoor unit 100. The position of the newly added electric control box 108 here should meet basic requirements such as no interference. Those skilled in the art can arrange the newly added electric control box 108 according to the structure of the outdoor unit 100 during implementation.

[0046] The high-voltage electrical control part of the indoor unit 1 here can be understood by technical personnel in this field, and includes components such as a switching power supply transformer, a fuse, and a relay; and the receiving board and the Internet gateway for receiving the control of the indoor unit remote control are low-voltage and do not pose a risk of ignition, so they can still be designed and placed in the indoor unit 1 without affecting the user's operating experience.

[0047] In this embodiment, based on the existing structure of the outdoor unit 100, the fan 105 is generally arranged on the left side inside the outdoor unit 100, a condenser and pipelines are arranged behind the outdoor unit 100, and there are outdoor unit wiring and piping connections on the right side panel. The newly added electric control box 108 is preferably arranged on the front panel 102 of the outdoor unit 100, specifically, on the side of the front panel 102 of the outdoor unit 100 away from the air outlet of the fan 105.

[0048] Obviously, the newly added electric control box 108 can be arranged on the inner side or the outer side of the front panel 102 .

[0049] In this embodiment, the existing design is based on the fact that the ambient temperature of the outdoor unit 100 is higher than that of the indoor unit 1, and the heat generated by the outdoor unit electronic control device is higher than that of the indoor unit electronic control device. Therefore, the existing outdoor unit electronic control device is often designed with a radiator, and the temperature resistance level of the device selection should also be higher than that of the indoor unit electronic control device to improve safety performance. In this application, the high-voltage part of the indoor unit 1 is moved to the outdoor unit 100, and the heat dissipation of the newly added electric control box 108 also needs to be considered. Obviously, measures such as adding a radiator or improving the device selection can be adopted as implemented by the existing outdoor unit electronic control device. Here, based on cost considerations, it is preferred to introduce fresh air for heat dissipation. The negative pressure is formed by the fan 105 of the outdoor unit 100 to introduce fresh air to meet the heat dissipation requirements of the newly added electric control box 108. It is easy to implement and has low cost.

[0050] Specifically, a fresh air receiving chamber can be provided on the inner or outer side of the side wall of the outdoor unit 100 away from the air outlet of the fan 105. In this embodiment, the fresh air receiving chamber is provided on the outer side of the side wall of the outdoor unit 100, and a shutter is provided on the outer side wall of the fresh air receiving chamber, that is, Figure 5 C in the figure to connect to the external space of the outdoor unit 100; it also includes a first heat dissipation guide tube 110 and a second heat dissipation guide tube 107, the first heat dissipation guide tube 110 connects the fresh air receiving chamber and the newly added electric control box 108, and the second heat dissipation guide tube 107 connects the newly added electric control box 108 and the negative pressure area formed by the rotation of the fan 105.

[0051] In this embodiment, an external unit electric control cover plate 103 is provided on the side wall of the outdoor unit 100 away from the fan 105, and a through hole is provided at the bottom of the external unit electric control cover plate 103 for the passage of the power line of the electric control strong electric part of the indoor unit 1. The power line of the electric control strong electric part of the indoor unit 1, that is, the power line corresponding to the newly added electric control box 108, is inserted through the external unit electric control cover plate 103 provided on the side wall of the outdoor unit 100 away from the fan 105, so as to facilitate implementation.

[0052] Furthermore, the outdoor unit electric control cover 103 can be implemented to be detachably connected to the side wall of the outdoor unit 100 to facilitate maintenance.

[0053] Obviously, it is preferred that the newly added electric control box 108 and the external machine electric control cover plate 103 are height-adapted to facilitate the threading of the newly added electric control box 108 and the implementation of the heat dissipation guide pipe.

[0054] In this embodiment, a fresh air receiving chamber is formed between the external unit electrical control cover plate 103 and the side wall of the outdoor unit 100, the power cord of the high-current part of the internal unit electrical control is inserted into the fresh air receiving chamber, and is connected to the newly added electrical control box 108 through the first heat dissipation duct 110, so that the first heat dissipation duct 110 is not only used for fresh air diversion, but also has the function of threading the newly added electrical control box 108.

[0055] In this embodiment, the outdoor unit electrical control cover 103 is divided into two parts, an upper and a lower part, by a partition. A fresh air receiving chamber is formed between the lower part and the side wall of the outdoor unit 100, and the upper part is connected to the internal space of the outdoor unit 100 to shield the wiring part of the outdoor unit. The outdoor unit electrical control cover 103 has three functions of shielding the wiring part of the outdoor unit, threading the newly added electrical control box 108, and forming a fresh air receiving chamber.

[0056] like Figure 5 As shown, the side B of the outdoor unit electric control cover 103 is attached to the side wall of the outdoor unit 100, and a partition A is provided in the middle. The partition A divides the outdoor unit electric control cover 103 into two parts, upper and lower. The upper part of the outdoor unit electric control cover 103 is connected to the inside of the outdoor unit 100, and is used to cover the wiring part of the outdoor unit; a fresh air receiving chamber is formed between the lower part of the outdoor unit electric control cover 103 and the side wall of the outdoor unit 100, and the fresh air receiving chamber and the internal space of the outdoor unit 100 are preferably set to be disconnected, which can be achieved through the side wall of the outdoor unit 100 or the outdoor unit electric control cover 103, or by adding a baffle, and no specific restrictions are made here; a through hole is provided at the bottom D of the outdoor unit electric control cover 103 for the power line of the strong electric part of the indoor unit 1 electric control to pass through.

[0057] In this embodiment, based on the prior art, a sound insulation board 106 is always provided on the side of the fan 105 close to the external machine electric control cover 103, that is, the side close to the newly added electric control box 108. The second heat dissipation guide tube 107 is preferably fixed on the sound insulation board 106, and no additional mounting structure is required. Further, it can be implemented as a hole in the sound insulation board 106 for the second heat dissipation guide tube 107 to pass through and guide to the negative pressure area formed by the rotation of the fan 105.

[0058] In this embodiment, a new electric control box 108 is provided on the outside of the front panel 102 of the outdoor unit 100, and the new electric control box 108 is embedded in the outside of the front panel 102 of the outdoor unit 100. An electric control box baffle 109 is provided in the new electric control box 108 to shield and isolate the high-voltage electrical part of the indoor unit and the internal space of the outdoor unit 100.

[0059] In this embodiment, an implementation method of a newly added electric control box 108 is provided. The newly added electric control box 108 is arranged on the outside of the front panel 102 of the outdoor unit 100, which does not affect the original internal component layout of the outdoor unit 100 and is easy to implement; the newly added electric control box 108 is embedded in the front panel 102 of the outdoor unit 100, which has little impact on the processing and manufacturing process of the front panel 102, and the newly added electric control box 108 can be implemented as a detachable connection for easy maintenance.

[0060] In some embodiments, the newly added electric control box 108 is formed by the protrusion of the front panel 102 of the outdoor unit 100, and an electric control box baffle 109 is provided in the newly added electric control box 108 to shield and isolate the indoor unit's electrical control high-voltage part and the internal space of the outdoor unit 100.

[0061] In this embodiment, the front panel 102 of the outdoor unit 100 is convex to form a newly added electric control box 108, which has good waterproof performance and is safe and reliable; similar to this embodiment, the newly added electric control box 108 is convex, which does not affect the layout of the original internal components of the outdoor unit 100 and is easy to implement. Obviously, here the newly added electric control box 108 is convex, and the front panel 102 can directly serve as the newly added electric control box 108 with a convex structure, or the convex structure serves as a storage space for the newly added electric control box 108.

[0062] Based on the above, the processing technology and materials of the air conditioner provided by this application are basically the same as those of the original air conditioner scheme. The strong electric power of the indoor electric control is transferred to the outdoor unit, and the structural space of the indoor unit can be made smaller and the size is shortened; the outdoor unit only needs to make appropriate mold repairs on the front plate, sound insulation board, and outdoor electric control cover. The improvement effect is obvious, and it takes into account the advantages of small cost changes and simple process, which is easy to promote and implement, provides a technical reference for the safe design of flammable refrigerants, and lays the foundation for the large-scale promotion and application of more flammable R290 air conditioners.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioner comprising an indoor unit (1) and an outdoor unit (100), characterized in that: A newly added electric control box (108) is arranged on the outdoor unit (100), and the electric control high-voltage part of the indoor unit (1) is connected and arranged in the newly added electric control box (108).

2. The air conditioner according to claim 1, characterized in that: A fan (105) is arranged on one side inside the outdoor unit (100), an air outlet of the fan (105) is arranged on one side of the front panel (102) of the outdoor unit (100) correspondingly, and a newly added electric control box (108) is fixedly arranged on the side of the front panel (102) of the outdoor unit (100) away from the air outlet of the fan (105).

3. The air conditioner according to claim 2, characterized in that: A fresh air receiving chamber is provided on the inner side or the outer side of the side wall of the outdoor unit (100) away from the fan (105), and a shutter is provided on the outer side wall of the fresh air receiving chamber to connect with the external space of the outdoor unit (100); It also comprises a first heat dissipation duct (110) and a second heat dissipation duct (107), wherein the first heat dissipation duct (110) is connected to the fresh air receiving chamber and the newly added electric control box (108), and the second heat dissipation duct (107) is connected to the newly added electric control box (108) and the negative pressure area formed by the rotation of the fan (105).

4. The air conditioner according to claim 3, characterized in that: An outdoor unit electric control cover plate (103) is arranged on the outer side of the side wall of the outdoor unit (100) away from the fan (105), and a through hole is provided at the bottom of the outdoor unit electric control cover plate (103) for the power line of the electric control high-voltage part of the indoor unit (1) to pass through.

5. The air conditioner according to claim 4, characterized in that: A fresh air receiving chamber is formed between the external unit electrical control cover plate (103) and the side wall of the outdoor unit (100); a power line of the internal unit electrical control high-voltage part is inserted into the fresh air receiving chamber and connected to a newly added electrical control box (108) via a first heat dissipation guide tube (110).

6. The air conditioner according to claim 4, characterized in that: The outdoor unit electric control cover plate (103) is divided into upper and lower parts by a partition plate, a fresh air receiving chamber is formed between the lower part and the side wall of the outdoor unit (100), and the upper part is connected to the internal space of the outdoor unit (100) and is used to shield the wiring part of the outdoor unit.

7. The air conditioner according to claim 3, characterized in that: A sound insulation board (106) is provided on one side of the fan (105) close to the newly added electric control box (108); one end of the second heat dissipation guide tube (107) is fixed on the first accommodating cavity, and the other end is fixed on the sound insulation board (106).

8. The air conditioner according to any one of claims 2 to 7, characterized in that: The newly added electric control box (108) is formed by protruding outward from the front panel (102) of the outdoor unit (100), and an electric control box baffle (109) is provided inside the newly added electric control box (108) to shield and isolate the electric control high-voltage part of the indoor unit and the internal space of the outdoor unit (100).

9. The air conditioner according to any one of claims 2 to 7, characterized in that: A newly added electric control box (108) is arranged outside the front panel (102) of the outdoor unit (100), and the newly added electric control box (108) is embedded in the outside of the front panel (102) of the outdoor unit (100). An electric control box baffle (109) is arranged inside the newly added electric control box (108) to shield and isolate the electric control high-voltage part of the indoor unit and the internal space of the outdoor unit (100).

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