Electric appliance box and air conditioner

Abstract

The utility model discloses an electric appliance box and an air conditioner. The device comprises a box body and a box cover, the box body is provided with a containing cavity, and the box cover covers the box body to cover the containing cavity of the box body; wherein the box body adopts a preset special-shaped structure, and the special-shaped structure is provided with a bent part; and a maintenance structure is adopted at a preset operation position on the box cover, so that an operator can conveniently operate through the maintenance structure on the box cover. According to the scheme, the box body structure of the electric appliance box is arranged to be the structure with the bent part so as to save space, and the maintenance structure is adopted at the preset operation position on the box cover so as to facilitate operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric appliance box, concretely relates to an electric appliance box and air conditioner. BACKGROUND

[0002] With the development of electric appliance equipment (such as air conditioner) technology, the structure of air conditioner is more and more complex.In related scheme, the space in the electric appliance box of air conditioner is mostly narrow, with the increasing function of air conditioner, the number of electrical components and the size of electric appliance box also increase accordingly.But, due to the size limitation of air conditioner and the size limitation of other components in air conditioner unit, the size and capacity of electric appliance box are limited, which cannot meet the increasing function demand of air conditioner.

[0003] The above content is only used to assist understanding the technical scheme of the utility model, and does not represent that the above content is prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an electric appliance box and air conditioner to solve the problem that the limited space of electric appliance box cannot meet the increasing function demand of electric appliance equipment (such as air conditioner), and achieve the effect that the box body structure of electric appliance box is arranged as the structure with bending part to save space, and the maintenance structure is arranged at the preset operation position on the box cover to facilitate operation.

[0005] The utility model provides an electric appliance box, which comprises a box body and a box cover, the box body has a containing cavity, and the box cover covers the box body to cover the containing cavity of the box body, wherein the box body adopts a preset special-shaped structure, the special-shaped structure has a bending part, and a maintenance structure is arranged at a preset operation position on the box cover to facilitate operation.

[0006] In some embodiments, the electric appliance box further comprises a dual-power switching device arranged in the containing cavity of the box body, the dual-power switching device comprises an overcurrent circuit breaker module, the overcurrent circuit breaker module is arranged at the bending part of the special-shaped structure in the containing cavity of the box body, the position on the box cover corresponding to the overcurrent circuit breaker module is a preset operation position, and the maintenance structure comprises a hollow part, and the hollow part is arranged at the position on the box cover corresponding to the overcurrent circuit breaker module to facilitate an operator to operate the overcurrent circuit breaker module through the hollow part on the box cover.

[0007] In some embodiments, the special-shaped structure has a short side portion and a long side portion; in the case of vertical placement of the box body, the maximum height of the long side portion of the special-shaped structure is greater than the maximum height of the short side portion of the special-shaped structure; the transition between the short side portion of the special-shaped structure and the long side portion of the special-shaped structure forms a bending portion of the special-shaped structure; the overcurrent circuit breaker module is located at the bending portion of the special-shaped structure in the accommodating cavity of the box body.

[0008] In some embodiments, the special-shaped structure includes any one of the following shapes: an L-shaped structure, an upright trapezoidal structure, an inverted trapezoidal structure, and a T-shaped structure.

[0009] In some embodiments, the overcurrent circuit breaker module includes a first overcurrent circuit breaker, a second overcurrent circuit breaker, and a third overcurrent circuit breaker; wherein, in the accommodating space of the box body, at the bending portion of the special-shaped structure, the first overcurrent circuit breaker and the second overcurrent circuit breaker are located at the short side portion of the special-shaped structure, and the third overcurrent circuit breaker is located at the long side portion of the special-shaped structure.

[0010] In some embodiments, the power switching device further includes a first AC contactor, a second AC contactor, and a first relay; wherein, in the accommodating space of the box body, at the bending portion of the special-shaped structure, the first AC contactor, the second AC contactor, and the first relay are all located at the long side portion of the special-shaped structure.

[0011] In some embodiments, the power switching device further includes a first AC contactor, a second AC contactor, and a first relay; wherein, in the accommodating space of the box body, at the bending portion of the special-shaped structure, the first AC contactor, the second AC contactor, and the first relay are all located at the long side portion of the special-shaped structure; wherein, in the case that the first overcurrent circuit breaker and the second overcurrent circuit breaker are arranged in a preset first direction in sequence, the first AC contactor, the second AC contactor, the third overcurrent circuit breaker, and the first relay are also arranged in a preset first direction in sequence.

[0012] In some embodiments, the distance between the third over-current circuit breaker and the first relay is less than a preset distance; and / or, in the case that the dual power supply of the dual power supply switching device comprises a first power supply and a second power supply, the first power supply is connected to the power supply end of the load via the first over-current circuit breaker and the first AC contactor; the second power supply is connected to the power supply end of the load via the second over-current circuit breaker and the second AC contactor; the contacts of the first relay are connected to the coils of the first AC contactor and the coils of the second AC contactor, respectively; and the coil of the first relay is connected to the third over-current circuit breaker.

[0013] In some embodiments, in the case that the special-shaped structure has a short side portion and a long side portion, and the over-current circuit breaker module comprises a first over-current circuit breaker and a second over-current circuit breaker, the first over-current circuit breaker and the second over-current circuit breaker are located at the short side portion of the special-shaped structure; and the hollowed-out portion on the box cover comprises the on-off port of the first over-current circuit breaker and the on-off port of the second over-current circuit breaker.

[0014] In some embodiments, on the box cover, the on-off port of the first over-current circuit breaker is located at the top of the position corresponding to the toggle of the first over-current circuit breaker; the on-off port of the second over-current circuit breaker is located at the top of the position corresponding to the toggle of the second over-current circuit breaker; in the case that the dual power supply of the dual power supply switching device comprises a first power supply and a second power supply, first power supply power line entry holes corresponding to the first power supply and second power supply power line entry holes corresponding to the second power supply are further provided on the box cover; on the box cover, the first power supply power line entry holes are located at the bottom of the position corresponding to the toggle of the first over-current circuit breaker; and the second power supply power line entry holes are located at the bottom of the position corresponding to the toggle of the second over-current circuit breaker.

[0015] In order to match the above device, the utility model provides a kind of air conditioner, comprising: the electric appliance box described above.

[0016] Therefore, the scheme of the utility model, by the structure of the electric appliance box of air conditioner is set to special-shaped structure (such as L-shaped structure), so that the electric appliance box has bending portion;Maintenance structure is used at the preset operating position on the box cover to facilitate operator to operate through the maintenance structure on the box cover;Thus, by the box body structure of electric appliance box is set to the structure with bending portion to save space, maintenance structure is used at the preset operating position on the box cover to facilitate operation.

[0017] Further, by integrating the dual power switching device in the electric appliance box, and setting the over-current breaker module in the dual power switching device at the bending part in the box body, a through hole and a wire inlet hole are set at the part on the box cover corresponding to the over-current breaker module; thus, by setting the structure of the electric appliance box as a structure with a bending part, setting the over-current breaker module at the bending part and setting the through hole and the wire inlet hole, the space of the electric appliance box can be saved, and the operation is facilitated.

[0018] Other features and advantages of the present application will be described in the following description, and become apparent from the description, or be learned through the practice of the present application.

[0019] The technical solutions of the present application will be described in further detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of an embodiment of the electric appliance box of the present application;

[0021] Figure 2 is a circuit principle schematic view of the dual power supply;

[0022] Figure 3 is a structural schematic view of an L-shaped electric appliance box (including an electric appliance box cover);

[0023] Figure 4 is a structural schematic view of an L-shaped electric appliance box (not including an electric appliance box cover);

[0024] Figure 5 is a structural schematic view of a bending part of a trapezoidal electric appliance box, wherein (a) is a structural schematic view of a bending part of a right trapezoidal electric appliance box, and (b) is a structural schematic view of a bending part of an inverted trapezoidal electric appliance box.

[0025] In combination with the drawings, Figure 3 In the embodiments of the present application, the following signs are used:

[0026] 1 - a through hole of a first over-current breaker (i.e. a through hole of a commonly used over-current breaker QF1); 2 - a through hole of a second over-current breaker (i.e. a through hole of a standby over-current breaker QF2); 3 - a power line inlet hole of a first power supply (i.e. a power line inlet hole of a commonly used power supply); 4 - a power line inlet hole of a second power supply (i.e. a power line inlet hole of a standby power supply).

[0027] In combination with the drawings, Figure 4 In the embodiments of the present application, the following signs are used:

[0028] 5 - first overcurrent circuit breaker (such as the usual overcurrent circuit breaker QF1); 6 - second overcurrent circuit breaker (such as the reserve overcurrent circuit breaker QF2); 7 - first AC contactor (such as the AC contactor KM1); 8 - AC contactor KM2; 9 - third overcurrent circuit breaker (such as the overcurrent circuit breaker QF3); 10 - intermediate relay KA1. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the utility model specific embodiment and corresponding drawings to make the utility model technical scheme clear and complete. Obviously, the described embodiment is only a part of the utility model embodiment, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0030] According to the embodiment of the utility model, a kind of electric appliance box is provided.The electric appliance box, preferably can be applied to the field of inter-row air conditioner of computer room air conditioner, since the space of inter-row air conditioner is smaller, the occupied space of electric appliance box needs to be reduced accordingly.Referring to Figure 1 The electric appliance box can include: box body, box cover;The box body has accommodating cavity, and the box cover is covered on the box body to cover the accommodating cavity of the box body.

[0031] Among them, the box body adopts preset special-shaped structure, and the special-shaped structure has bending portion;Preset operation position on the box cover adopts maintenance structure, for facilitating operator to operate through the maintenance structure on the box cover. In related scheme, the box body of electric appliance box adopts standard straight or square;And the special-shaped structure that the box body of electric appliance box adopts in the utility model refers to the structure different from standard straight or square structure.

[0032] The utility model scheme proposes a special-shaped electric appliance box structure for air conditioner, which is easy to install and operate, adjusts the electric appliance box structure to special-shaped (such as L-shaped), so that the occupied space of electric appliance box is small;And preset operation position on the box cover of electric appliance box adopts maintenance structure, for facilitating operator to operate through the maintenance structure on the box cover, easy to operate, convenient to use.

[0033] In some embodiments, the electric appliance box further comprises: a dual power supply switching device, the dual power supply switching device is arranged in the accommodating cavity of the box body;The dual power supply switching device comprises: an overcurrent circuit breaker module;The overcurrent circuit breaker module is located at the bending portion of the special-shaped structure in the accommodating cavity of the box body.

[0034] The position corresponding to the over-current circuit breaker module on the box cover is a preset operation position; the maintenance structure comprises: a hollow part; the hollow part is arranged at the position corresponding to the over-current circuit breaker module on the box cover, and is used for enabling an operator to operate the over-current circuit breaker module through the hollow part on the box cover. For example, the place where the over-current circuit breaker (i.e. the air switch) of the air conditioner unit is arranged is made into a hollow part, thereby facilitating operation. Preferably, in the scheme of the utility model, the maintenance structure further comprises: a dustproof part used for shielding the hollow part to prevent dust from falling into the hollow part; the dustproof part can be movably connected with the hollow part. For example, the dustproof part and the hollow part can be connected in the form of a buckle (such as a plastic buckle), can be connected in the form of pulling and lifting, can be connected in the form of pushing and pulling, or can be connected in the form of sliding, etc.

[0035] In the scheme of the utility model, the electric appliance box structure is adjusted into a special-shaped structure, and the over-current circuit breaker and other devices that need to be touched by a customer are installed at the bending part. The electric appliance box structure in the scheme of the utility model is simple and convenient to use, makes the over-current circuit breaker easy to be quickly opened and closed, makes it convenient to cut off the power supply of the air conditioner unit, and further makes it convenient to maintain the connecting wire in the air conditioner unit body, thereby meeting the use requirements of users. Among them, the over-current circuit breaker is arranged in the air conditioner unit, and is mainly used for protecting the circuit and equipment from the influence of overload or short circuit and other faults, but the installation position of the over-current circuit breaker is below the electric appliance box cover, which is not easy to operate. The scheme of the utility model modifies the over-current circuit breaker at a height suitable for the height of a human body, and adopts a hollow form, thereby facilitating operation.

[0036] Among them, the over-current circuit breaker is used for controlling the on-off of the power supply side of the unit. Generally, the height of a user is between 1.5 meters and 2 meters, and the electric appliance box of some commercial unit of a machine room is arranged at a high position, even higher than 2 meters. If the over-current circuit breaker in the electric appliance box is arranged at a high position, it will not be convenient for a user to operate. Therefore, in the scheme of the utility model, the bending angle (i.e. the bending part) of the special-shaped electric appliance box can be arranged at a height of about 1 meter, thereby enabling most users to operate conveniently.

[0037] In some embodiments, the special-shaped structure has a short side part and a long side part; in the case that the box body is vertically placed, the maximum height of the long side part of the special-shaped structure is greater than the maximum height of the short side part of the special-shaped structure; the transition between the short side part of the special-shaped structure and the long side part of the special-shaped structure forms the bending part of the special-shaped structure; in the case that the electric appliance box further comprises a dual power supply switching device, the over-current circuit breaker module is located at the bending part of the special-shaped structure in the accommodating cavity of the box body.

[0038] In some embodiments, the special-shaped structure comprises any one of the following structures: an L-shaped structure, an upright trapezoidal structure, an inverted trapezoidal structure, and a T-shaped structure.

[0039] In the scheme of the utility model, the structure of the electric appliance box is made into a special shape, such as an L-shaped structure, an upright trapezoidal structure, an inverted trapezoidal structure, a T-shaped structure, and the like. Compared with a standard straight or square electric appliance box, the special-shaped electric appliance box has more advantages in a specific installation environment, is easy to install in an air conditioner unit with a narrow structure, greatly saves space, and ensures the flexibility of installation. The special-shaped electric appliance box can effectively reduce the height of the electric appliance box, thereby reducing the demand on the size of the whole machine. In the case that the overall size of the air conditioner unit is limited, the utilization rate of space can be improved, and the problem that the limited space of the electric appliance box cannot meet the increasing demand for air conditioner functions is solved.

[0040] Preferably, the special-shaped structure comprises an L-shaped structure having a short side portion and a long side portion; in the case that the box body is vertically placed, the maximum height of the long side portion of the L-shaped structure is greater than the maximum height of the short side portion of the L-shaped structure. The transition between the short side portion of the L-shaped structure and the long side portion of the L-shaped structure forms a bending portion of the L-shaped structure. The overcurrent circuit breaker module is located at the bending portion of the L-shaped structure in the accommodating cavity of the box body.

[0041] In the scheme of the utility model, the structure of the electric appliance box is made into an L shape. Compared with a standard straight or square electric appliance box, the special-shaped electric appliance box has more advantages in a specific installation environment, is easy to install in an air conditioner unit with a narrow structure, greatly saves space, and ensures the flexibility of installation. The special-shaped (such as an L-shaped) electric appliance box can effectively reduce the height of the electric appliance box, thereby reducing the demand on the size of the whole machine. In the case that the overall size of the air conditioner unit is limited, the utilization rate of space can be improved, and the problem that the limited space of the electric appliance box cannot meet the increasing demand for air conditioner functions is solved.

[0042] In some embodiments, the overcurrent circuit breaker module comprises a first overcurrent circuit breaker 5, a second overcurrent circuit breaker 6, and a third overcurrent circuit breaker 9. In the accommodating space of the box body, at the bending portion of the special-shaped structure, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located at the short side portion of the special-shaped structure, and the third overcurrent circuit breaker 9 is located at the long side portion of the special-shaped structure. Preferably, in the case that the special-shaped structure is an L-shaped structure, in the accommodating space of the box body, at the bending portion of the L-shaped structure, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located at the short side portion of the L-shaped structure, and the third overcurrent circuit breaker 9 is located at the long side portion of the L-shaped structure.

[0043] In the scheme of the utility model, the first over-current circuit breaker (such as commonly used over-current circuit breaker QF1) 5, the second over-current circuit breaker (such as standby over-current circuit breaker QF2) 6 and the third over-current circuit breaker (such as one over-current circuit breaker QF3) 9 are placed at the bottom of the special-shaped (such as L-shaped) electrical box, which is convenient for customer wiring and reduces the bending and damage of cables.

[0044] In some embodiments, the power switching device further comprises a first AC contactor 7, a second AC contactor 8 and a first relay 10. In the accommodating space of the box body, the first AC contactor 7, the second AC contactor 8 and the first relay 10 are all located at the long side part of the special-shaped structure at the bending part of the special-shaped structure. Preferably, in the case where the special-shaped structure is an L-shaped structure, the first AC contactor 7, the second AC contactor 8 and the first relay 10 are all located at the long side part of the special-shaped (such as L-shaped) structure at the bending part of the L-shaped structure in the accommodating space of the box body.

[0045] In the scheme of the utility model, the first AC contactor (such as AC contactor KM1) 7, the second AC contactor (such as AC contactor KM2) 8 and the first relay (such as intermediate relay KA1) 10 are placed at the long side of the bending part of the special-shaped (such as L-shaped) electrical box, which can reduce the bending and damage of cables and is suitable for complex wiring environment and ensures the smoothness of electrical lines.

[0046] In some embodiments, the power switching device further comprises a first AC contactor 7, a second AC contactor 8 and a first relay 10. In the accommodating space of the box body, the first AC contactor 7, the second AC contactor 8 and the first relay 10 are all located at the long side part of the special-shaped structure at the bending part of the special-shaped structure. Preferably, in the case where the special-shaped structure is an L-shaped structure, the first AC contactor 7, the second AC contactor 8 and the first relay 10 are all located at the long side part of the L-shaped structure at the bending part of the L-shaped structure in the accommodating space of the box body.

[0047] In the case where the box body is vertically placed, in the case where the first over-current circuit breaker 5 and the second over-current circuit breaker 6 are arranged in a preset first direction in sequence, the first AC contactor 7, the second AC contactor 8, the third over-current circuit breaker 9 and the first relay 10 are also arranged in a preset first direction in sequence. The preset first direction is, for example, the direction from left to right when the box body is vertically placed and viewed from the front of the box body.

[0048] Figure 4 It is a structural schematic view of the L-shaped electrical box (not including the cover of the electrical box). As shown inFigure 4 As shown, the L-shaped electrical box contains a first overcurrent circuit breaker (such as a commonly used overcurrent circuit breaker QF1) 5, a second overcurrent circuit breaker (such as a standby overcurrent circuit breaker QF2) 6, a first AC contactor (such as an AC contactor KM1) 7, a second AC contactor (such as an AC contactor KM2) 8, a third overcurrent circuit breaker (such as a single-position overcurrent circuit breaker QF3) 9, and a first relay (such as an intermediate relay KA1) 10.

[0049] like Figure 4 As shown, the dual power supply consists of overcurrent circuit breakers (such as the main overcurrent circuit breaker QF1, the standby overcurrent circuit breaker QF2, and the single-position overcurrent circuit breaker QF3), AC contactors (such as AC contactors KM1 and KM2), and intermediate relays (intermediate relay KA1). Figure 4 This indicates the placement of these components.

[0050] In existing air conditioning units, to ensure safety, the electrical box is not a snap-lock type; the entire cover must be removed when the air conditioning unit needs to be powered off. In this invention, the overcurrent circuit breaker is placed at the bottom of an irregularly shaped (e.g., L-shaped) electrical box, facilitating wiring and ensuring smooth electrical circuitry. This reduces cable bending and damage, making it suitable for complex wiring environments and solving the problem of difficult-to-open electrical boxes that hinders control of the air conditioning unit's power supply.

[0051] In some embodiments, the distance between the third overcurrent circuit breaker 9 and the first relay 10 is less than a preset distance.

[0052] In this utility model, the third overcurrent circuit breaker (such as a single-position overcurrent circuit breaker QF3) 9 and the first relay (such as an intermediate relay KA1) 10 are compactly installed on the long side of the bent part of the irregular-shaped (such as L-shaped) electrical box, which can reduce the installation space and facilitate wiring.

[0053] In some embodiments, when the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, the first power supply is such as a main power supply, and the second power supply is such as a backup power supply. The first power supply is connected to the power supply terminal of the load via the first overcurrent circuit breaker 5 and the first AC contactor 7; the second power supply is connected to the power supply terminal of the load via the second overcurrent circuit breaker 6 and the second AC contactor 8; the contacts of the first relay 10 are connected to the coils of the first AC contactor 7 and the second AC contactor 8, respectively; and the coil of the first relay 10 is connected to the third overcurrent circuit breaker 9.

[0054] Dual power circuit refers to the circuit in which two independent power sources exist simultaneously, usually used to increase the stability and security of the system. In the design of dual power circuit, two power sources can work in parallel to supply power to different parts of the circuit, or when the main power fails, the backup power can automatically switch to take over the power supply, ensuring that the system will not be affected by the failure of a single power source. Each overcurrent circuit breaker is connected to an AC contactor, and the output of the AC contactor is connected to the load. The output of the intermediate relay controls the coil of the AC contactor. When the main power is normal, the AC contactor connected to the main power is controlled to close by the intermediate relay, providing power to the load. If the main power fails, the intermediate relay should detect the change and automatically switch to close the AC contactor connected to the secondary power. When the main power is restored, the system should automatically switch back to the main power supply.

[0055] Figure 2 The schematic diagram of the dual power circuit is shown. As shown in Figure 2 , the dual power supply includes a main power supply and a backup power supply. The dual power circuit includes a main overcurrent circuit breaker QF1, a backup overcurrent circuit breaker QF2, a one-bit overcurrent circuit breaker QF3, an AC contactor KM1, an AC contactor KM2, and an intermediate relay KA1. Figure 2 In the example shown in , the overcurrent circuit breaker (such as the main overcurrent circuit breaker QF1, the backup overcurrent circuit breaker QF2, and the one-bit overcurrent circuit breaker QF3) protects the circuit from overload or short circuit damage, usually installed at the front end of each power supply. The AC contactor (such as the AC contactor KM1 and the AC contactor KM2) is used to control the on and off of the main and secondary power supply, generally two contactors are needed, one for the main power (i.e. the main power supply), the other for the secondary power (i.e. the backup power supply). The intermediate relay (intermediate relay KA1) is used to control the operation of the AC contactor (such as the main overcurrent circuit breaker QF1, the backup overcurrent circuit breaker QF2, and the one-bit overcurrent circuit breaker QF3), and to implement the switching logic between the main power supply and the backup power supply.

[0056] Figure 2 The switching structure of the dual power supply can be displayed. In Figure 2In the example shown, the normal over-current circuit breaker QFl is followed by an AC contactor KMl, the backup over-current circuit breaker QF2 is followed by an AC contactor KM2, the AC contactor KM2 is connected to the AC contactor KMl, and the output of the AC contactor KMl is connected to the load. The output of the intermediate relay KA1 controls the coils of the AC contactor KMl and the AC contactor KM2. When the normal power supply is normal, the AC contactor KMl connected to the normal power supply is closed by the intermediate relay KA1 to provide power to the load. If the normal power supply fails, the intermediate relay KA1 should detect the change and automatically switch so that the AC contactor KM2 connected to the backup power supply is closed. When the normal power supply is restored, the system should automatically switch back to the normal power supply.

[0057] In particular, in the main circuit, the hot wire Ll of the normal power supply is connected to the first connection end of the power supply end of the air conditioner unit load through the terminal 2 and the terminal 1 of the normal over-current circuit breaker QFl, and the terminal 2 and the terminal 1 of the contact of the AC contactor KMl. The hot wire L2 of the normal power supply is connected to the second connection end of the power supply end of the air conditioner unit load through the terminal 4 and the terminal 3 of the normal over-current circuit breaker QFl, and the terminal 4 and the terminal 3 of the contact of the AC contactor KMl. The hot wire L3 of the normal power supply is connected to the third connection end of the power supply end of the air conditioner unit load through the terminal 6 and the terminal 5 of the normal over-current circuit breaker QFl, and the terminal 6 and the terminal 5 of the contact of the AC contactor KMl. The neutral wire N of the normal power supply is connected to the fourth connection end of the power supply end of the air conditioner unit load through the terminal 8 and the terminal 7 of the normal over-current circuit breaker QFl. The PE (Protective Earth) end of the normal power supply is connected to the power supply ground PE. The terminal 1 of the normal over-current circuit breaker QFl is connected to the terminal 7 of the normal over-current circuit breaker QFl through the terminal A2 and the terminal Al of the coil of the AC contactor KMl, the terminal 9 and the terminal 5 of the contact of the intermediate relay KA1, and the terminal 21 and the terminal 22 of the contact of the AC contactor KM2. The terminal 1 of the normal over-current circuit breaker QFl is also connected to the terminal 7 of the normal over-current circuit breaker QFl through the terminal 1 and the terminal 2 of the contact of the one-bit over-current circuit breaker QF3, and the terminal 13 and the terminal 14 of the coil of the intermediate relay KA1.

[0058] In the standby circuit, the live wire L1 of the standby power supply, after passing through terminals 2 and 1 of the standby overcurrent circuit breaker QF2 and terminals 2 and 1 of the AC contactor KM2, is connected to the first connection terminal of the air conditioner unit load's power supply. The live wire L2 of the standby power supply, after passing through terminals 4 and 3 of the standby overcurrent circuit breaker QF2 and terminals 4 and 3 of the AC contactor KM2, is connected to the second connection terminal of the air conditioner unit load's power supply. The live wire L3 of the standby power supply, after passing through terminals 6 and 5 of the standby overcurrent circuit breaker QF2 and terminals 6 and 5 of the AC contactor KM2, is connected to the third connection terminal of the air conditioner unit load's power supply. The neutral wire N of the standby power supply, after passing through terminals 8 and 7 of the standby overcurrent circuit breaker QF2, is connected to the fourth connection terminal of the air conditioner unit load's power supply. The PE terminal of the standby power supply is connected to the power ground PE. Terminal 2 of the contact of AC contactor KM2, after passing through terminals A2 and A1 of the coil of AC contactor KM2, terminals 10 and 2 of the contact of intermediate relay KA1, and terminals 21 and 22 of the contact of AC contactor KM1, is connected to terminal 7 of the standby overcurrent circuit breaker QF2.

[0059] In the solution of this utility model, as follows: Figure 2 The dual-power switching device with dual-path switching function shown is integrated into an irregularly shaped (e.g., L-shaped) electrical box. This requires careful planning of the box's spatial layout to ensure the safe and effective installation of all electrical components, while also considering heat dissipation, operation, and maintenance needs. The reason for integrating the dual-power switching device into an irregularly shaped (e.g., L-shaped) electrical box is that it requires many electrical components, and these components need to be arranged uniformly within the electrical box, adhering to principles of control method, convenient wiring, and aesthetically pleasing layout.

[0060] In some embodiments, when the special-shaped structure has a short side portion and a long side portion, and the overcurrent circuit breaker module comprises a first overcurrent circuit breaker 5 and a second overcurrent circuit breaker 6, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located at the short side portion of the special-shaped structure; the hollowed-out portion on the box cover comprises: the on-off port 1 of the first overcurrent circuit breaker 5, and the on-off port 2 of the second overcurrent circuit breaker 6. Preferably, when the special-shaped structure is an L-shaped structure, and the overcurrent circuit breaker module comprises a first overcurrent circuit breaker 5 and a second overcurrent circuit breaker 6, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located at the short side portion of the L-shaped structure; the hollowed-out portion on the box cover comprises: the on-off port 1 of the first overcurrent circuit breaker 5, and the on-off port 2 of the second overcurrent circuit breaker 6. The on-off port 1 of the first overcurrent circuit breaker 5 and the on-off port 2 of the second overcurrent circuit breaker 6 are both arranged at the portion of the box cover corresponding to the short side portion of the L-shaped structure, and are located at the top of the portion.

[0061] Figure 3 The structure of the L-shaped electric appliance box (including the electric appliance box cover) is shown in the figure. The portion corresponding to the overcurrent circuit breaker on the electric appliance box cover of the L-shaped electric appliance box is hollowed out, such as the on-off port (i.e. the on-off port of the commonly used overcurrent circuit breaker QF1) 1 of the first overcurrent circuit breaker and the on-off port (i.e. the on-off port of the standby overcurrent circuit breaker QF2) 2 of the second overcurrent circuit breaker in Figure 3 The electric appliance box cover is also L-shaped, and normal assembly of sheet metal can be achieved.

[0062] In the scheme of the utility model, the electric appliance box cover is covered above the overcurrent circuit breaker to be hollowed out, which is beneficial to convenient and quick control of on-off, and the operation and maintenance personnel can also have a suitable view angle and space to perform maintenance work. Preferably, the overcurrent circuit breaker is arranged as an air switch at the short side of the L-shaped structure and is hollowed out, so that the layout is reasonable and the wiring is beautiful.

[0063] In some embodiments, on the box cover, the on-off port 1 of the first overcurrent circuit breaker 5 is located at the top of the position corresponding to the paddle of the first overcurrent circuit breaker 5; and the on-off port 2 of the second overcurrent circuit breaker 6 is located at the top of the position corresponding to the paddle of the second overcurrent circuit breaker 6.

[0064] In the case where the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, the cover is further provided with a power inlet hole 3 for the first power supply and a power inlet hole 4 for the second power supply. On the cover, the power inlet hole 3 for the first power supply is located at the bottom of the position corresponding to the lever of the first overcurrent circuit breaker 5; the power inlet hole 4 for the second power supply is located at the bottom of the position corresponding to the lever of the second overcurrent circuit breaker 6. Both the power inlet hole 3 for the first power supply and the power inlet hole 4 for the second power supply are also located on the side of the cover corresponding to the short side of the L-shaped structure.

[0065] like Figure 3 As shown, on the electrical box cover on the short side of the L-shaped electrical box, there are the following: the on / off port of the first overcurrent circuit breaker (i.e., the on / off port of the commonly used overcurrent circuit breaker QF1) 1, the on / off port of the second overcurrent circuit breaker (i.e., the on / off port of the standby overcurrent circuit breaker QF2) 2, the power line inlet hole of the first power supply (i.e., the power line inlet hole of the commonly used power supply) 3, and the power line inlet hole of the second power supply (i.e., the power line inlet hole of the standby power supply) 4.

[0066] In this field, integrating a dual-power switching device with dual-path switching capability into an irregularly shaped (e.g., L-shaped) electrical box requires careful planning of the box's spatial layout to ensure the safe and efficient installation of all electrical components, while also considering heat dissipation, operation, and maintenance needs. In the solution of this utility model, as in... Figure 3 and Figure 4 In the example shown, the L-shaped electrical box for the air conditioner adopts an L-shaped structure. The bent bottom houses the primary and backup overcurrent circuit breakers for the dual power supply switching device. Openings are provided at the top of the two overcurrent circuit breakers at the lever positions for easy control of the air conditioner unit's on / off operation. Two cable inlets are provided at the bottom of the overcurrent circuit breakers: one for the primary power supply and one for the backup power supply. This ensures the electrical box is large enough to accommodate all electrical components while leaving sufficient space for heat dissipation and maintenance. Through its unique design advantages, it provides a more optimized solution for various complex application scenarios in terms of space utilization, environmental adaptability, operational safety, and cost-effectiveness. For example, when the width or height of the air conditioner unit is limited, the electrical box is not limited to a rectangle; it can be L-shaped as described in the utility model, and the lengths of the two sides of the L-shape can be flexibly selected, greatly optimizing space utilization. The L-shaped structure, combined with dual power supplies, offers significantly superior safety and space utilization.

[0067] It should be noted that the structure of the electric appliance box is not limited to the above form, for example, it is not limited to L-shaped, but also can be a regular trapezoid, an inverted trapezoid, a T-shaped structure and the like. That is, the electric appliance box can be not only a rectangular or L-shaped, but also a trapezoidal or T-shaped, and the bottom of the trapezoidal electric appliance box can also be folded, and the top of the inverted T-shaped can also be folded. The bottom of the trapezoidal electric appliance box is the same as the bottom of the special-shaped (such as L-shaped) electric appliance box, and can be made into a hollow part for placing the overcurrent circuit breaker. For details, please refer to the examples shown in Figure 5 Figure 5 FIGS. 3 and 4 are structural schematic diagrams of the bending part of the trapezoidal electric appliance box, wherein (a) is a structural schematic diagram of the bending part of the regular trapezoidal electric appliance box, and (b) is a structural schematic diagram of the bending part of the inverted trapezoidal electric appliance box.

[0068] According to the technical scheme of the present application, the structure of the electric appliance box for the air conditioner is set to a special-shaped structure (such as an L-shaped structure), so that the electric appliance box has a bending part; the dual power switching device is integrated in the electric appliance box, and the overcurrent circuit breaker module in the dual power switching device is arranged at the bending part in the box body, and the part corresponding to the overcurrent circuit breaker module on the box cover is provided with an on-off port and a wire inlet hole; thereby, by setting the structure of the electric appliance box to a structure with a bending part, and arranging the overcurrent circuit breaker module at the bending part and providing the on-off port and the wire inlet hole, the space of the electric appliance box can be saved, and the operation is facilitated.

[0069] According to the embodiments of the present application, an air conditioner corresponding to the electric appliance box is also provided. The air conditioner can include the electric appliance box described above.

[0070] The electric appliance box can include a box body, a box cover, and a dual power switching device; the box body has a containing cavity, the dual power switching device is arranged in the containing cavity of the box body, and the box cover covers the box body to cover the containing cavity of the box body. The box body adopts a preset special-shaped structure, and the special-shaped structure has a bending part; the dual power switching device includes an overcurrent circuit breaker module; the overcurrent circuit breaker module is located at the bending part of the special-shaped structure in the containing cavity of the box body. The position on the box cover corresponding to the overcurrent circuit breaker module is a preset operation position; the maintenance structure includes a hollow part; the position on the box cover corresponding to the overcurrent circuit breaker module is provided with a hollow part, which is used for the operator to operate the overcurrent circuit breaker module through the hollow part on the box cover. For example, the place where the air conditioner unit places the overcurrent circuit breaker (i.e. the air switch) is made into a hollow part, which is convenient for operation.

[0071] ​In the scheme of the utility model, the electrical box structure of the air conditioner is adjusted to L shape, and the overcurrent circuit breaker and other devices needed to be touched by the customer are installed at the bending part. The electrical box structure in the scheme of the utility model is simple, convenient to use, makes the overcurrent circuit breaker easy to open and close quickly, makes it convenient to power off the air conditioner unit, and further overhauls the connecting wire in the air conditioner unit body, meets the use requirement of the user. Among them, the overcurrent circuit breaker is arranged in the air conditioner unit, mainly protects the circuit and equipment from the influence of overload or short circuit fault, but the installation position of the overcurrent circuit breaker is installed below the electrical box cover, which is not easy to operate, and the scheme of the utility model modifies the overcurrent circuit breaker at the height suitable for the height of the human body, and adopts the hollow form, which is convenient to operate.

[0072] Preferably, the special-shaped structure comprises: an L-shaped structure having a short side portion and a long side portion; in the case of vertical placement of the box body, the maximum height of the long side portion of the L-shaped structure is greater than the maximum height of the short side portion of the L-shaped structure. The transition between the short side portion of the L-shaped structure and the long side portion of the L-shaped structure forms a bending portion of the L-shaped structure. The overcurrent circuit breaker module is located at the bending portion of the L-shaped structure in the accommodating cavity of the box body.

[0073] In the scheme of the utility model, the structure of the electrical box is made into L shape, compared with the standard straight or square electrical box, it has more advantages in the specific installation environment, it is easy to install in the air conditioner unit with narrow structure, greatly saves the space, and ensures the flexibility of installation. The special-shaped (such as L-shaped) electrical box can effectively reduce the height of the electrical box, thereby reducing the demand on the size of the whole machine, in the case that the overall size of the air conditioner unit is limited, the space utilization can be improved, and the problem that the limited space of the electrical box cannot meet the increasing demand of the air conditioner function is solved.

[0074] In some embodiments, the overcurrent circuit breaker module comprises: a first overcurrent circuit breaker 5, a second overcurrent circuit breaker 6 and a third overcurrent circuit breaker 9. Among them, in the accommodating space of the box body, at the bending portion of the L-shaped structure, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located at the short side portion of the L-shaped structure, and the third overcurrent circuit breaker 9 is located at the long side portion of the L-shaped structure.

[0075] In the scheme of the utility model, the first overcurrent circuit breaker (such as commonly used overcurrent circuit breaker QF1) 5, the second overcurrent circuit breaker (such as standby overcurrent circuit breaker QF2) 6 and the third overcurrent circuit breaker (such as one overcurrent circuit breaker QF3) 9 are placed at the bottom of the special-shaped (such as L-shaped) electrical box, which is convenient for the customer to wire and reduces the bending and damage of the cable.

[0076] In some embodiments, the power switching device further comprises a first AC contactor 7, a second AC contactor 8 and a first relay 10, wherein the first AC contactor 7, the second AC contactor 8 and the first relay 10 are arranged on the long side of the L-shaped structure at the bending part of the L-shaped structure in the accommodating space of the box body.

[0077] In the scheme of the utility model, the first AC contactor (such as AC contactor KM1) 7, the second AC contactor (such as AC contactor KM2) 8 and the first relay (such as intermediate relay KA1) 10 are arranged on the long side of the bending part of the special-shaped (such as L-shaped) electric appliance box, which can reduce the bending and damage of the cable, is suitable for complex wiring environment and guarantees the smoothness of the electrical circuit.

[0078] In some embodiments, the power switching device further comprises a first AC contactor 7, a second AC contactor 8 and a first relay 10, wherein the first AC contactor 7, the second AC contactor 8 and the first relay 10 are arranged on the long side of the L-shaped structure at the bending part of the L-shaped structure in the accommodating space of the box body.

[0079] Wherein, in the case that the first over-current breaker 5 and the second over-current breaker 6 are arranged in a preset first direction in sequence, the first AC contactor 7, the second AC contactor 8, the third over-current breaker 9 and the first relay 10 are also arranged in a preset first direction in sequence.

[0080] As shown in Figure 4 The box body of the special-shaped (such as L-shaped) electric appliance box is arranged with a first over-current breaker (such as commonly used over-current breaker QF1) 5, a second over-current breaker (such as standby over-current breaker QF2) 6, a first AC contactor (such as AC contactor KM1) 7, a second AC contactor (such as AC contactor KM2) 8, a third over-current breaker (such as one-bit over-current breaker QF3) 9 and a first relay (such as intermediate relay KA1) 10.

[0081] As shown in Figure 4 The composition of the dual power supply includes over-current breakers (such as commonly used over-current breaker QF1, standby over-current breaker QF2, one-bit over-current breaker QF3), AC contactors (such as AC contactor KM1, AC contactor KM2), intermediate relays (intermediate relay KA1), Figure 4 The arrangement positions of these components are shown.

[0082] In the air conditioner unit of the related scheme, in order to ensure safety, the electrical box part is not in the form of a live buckle, and when the air conditioner unit needs to be powered off, the entire cover needs to be removed. In the scheme of the utility model, the overcurrent circuit breaker is placed at the bottom of the special-shaped (such as L-shaped) electrical box, which is convenient for customers to wire, thereby ensuring the smoothness of the electrical circuit, reducing the bending and damage of the cable, and being suitable for complex wiring environment, and solving the problem that the electrical box is difficult to open and control the on-off of the air conditioner unit power supply.

[0083] In some embodiments, the distance between the third overcurrent circuit breaker 9 and the first relay 10 is less than a preset distance.

[0084] In the scheme of the utility model, the third overcurrent circuit breaker (such as a one-bit overcurrent circuit breaker QF3) 9 and the first relay (such as a middle relay KA1) 10 are compactly installed on the long side of the bending part of the special-shaped (such as L-shaped) electrical box, which can reduce the installation space and facilitate wiring.

[0085] In some embodiments, in the case that the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, the first power supply is a normal power supply, the second power supply is a backup power supply, the first power supply is connected to the power supply end of the load after passing through the first overcurrent circuit breaker 5 and the first AC contactor 7; the second power supply is connected to the power supply end of the load after passing through the second overcurrent circuit breaker 6 and the second AC contactor 8; the contacts of the first relay 10 are connected with the coils of the first AC contactor 7 and the coils of the second AC contactor 8 respectively; the coil of the first relay 10 is connected with the third overcurrent circuit breaker 9.

[0086] As shown in Figure 2 , the dual power supply includes a normal power supply and a backup power supply. The circuit of the dual power supply includes a normal overcurrent circuit breaker QF1, a backup overcurrent circuit breaker QF2, a one-bit overcurrent circuit breaker QF3, an AC contactor KM1, an AC contactor KM2, and a middle relay KA1. In the example shown in Figure 2 , the overcurrent circuit breaker (such as the normal overcurrent circuit breaker QF1, the backup overcurrent circuit breaker QF2, and the one-bit overcurrent circuit breaker QF3) protects the circuit from overload or short circuit damage, and is usually installed at the front end of each power supply. The AC contactor (such as the AC contactor KM1 and the AC contactor KM2) is used to control the connection and disconnection of the main and secondary power supplies, and generally two contactors are needed, one for the main power supply (i.e. the normal power supply), and the other for the secondary power supply (i.e. the backup power supply). The middle relay (the middle relay KA1) is used to control the operation of the AC contactor (such as the normal overcurrent circuit breaker QF1, the backup overcurrent circuit breaker QF2, and the one-bit overcurrent circuit breaker QF3), and to execute the switching logic between the normal power supply and the backup power supply.

[0087] InFigure 2 In the example shown, the normal over-current circuit breaker QFl is followed by an AC contactor one KMl, the backup over-current circuit breaker QF2 is followed by an AC contactor two KM2, the AC contactor two KM2 is connected to the AC contactor one KMl, and the output of the AC contactor one KMl is connected to the load. The output of the intermediate relay KA1 controls the coils of the AC contactor one KMl and the AC contactor two KM2. When the normal power supply is normal, the AC contactor one KMl connected to the normal power supply is controlled to be closed by the intermediate relay KA1 to provide power to the load. If the normal power supply fails, the intermediate relay KA1 should detect the change and automatically switch so that the AC contactor two KM2 connected to the backup power supply is closed. When the normal power supply is restored, the system should automatically switch back to the normal power supply.

[0088] In particular, in the main circuit, the hot line Ll of the normal power supply, after passing through the terminals 2 and 1 of the normal over-current circuit breaker QFl and the terminals 2 and 1 of the contacts of the AC contactor KMl, is connected to the first connection end of the power supply end of the air conditioner unit load. The hot line L2 of the normal power supply, after passing through the terminals 4 and 3 of the normal over-current circuit breaker QFl and the terminals 4 and 3 of the contacts of the AC contactor KMl, is connected to the second connection end of the power supply end of the air conditioner unit load. The hot line L3 of the normal power supply, after passing through the terminals 6 and 5 of the normal over-current circuit breaker QFl and the terminals 6 and 5 of the contacts of the AC contactor KMl, is connected to the third connection end of the power supply end of the air conditioner unit load. The neutral line N of the normal power supply, after passing through the terminals 8 and 7 of the normal over-current circuit breaker QFl, is connected to the fourth connection end of the power supply end of the air conditioner unit load. The PE (Protective Earth) end of the normal power supply is connected to the power supply ground PE. The terminal 1 of the normal over-current circuit breaker QFl, after passing through the terminals A2 and Al of the coil of the AC contactor KMl, the terminals 9 and 5 of the contacts of the intermediate relay KA1, and the terminals 21 and 22 of the contacts of the AC contactor KM2, is connected to the terminal 7 of the normal over-current circuit breaker QFl. The terminal 1 of the normal over-current circuit breaker QFl, after also passing through the terminals 1 and 2 of the contacts of the one-bit over-current circuit breaker QF3 and the terminals 13 and 14 of the coil of the intermediate relay KA1, is connected to the terminal 7 of the normal over-current circuit breaker QFl.

[0089] In the standby circuit, the live wire L1 of the standby power supply, after passing through terminals 2 and 1 of the standby overcurrent circuit breaker QF2 and terminals 2 and 1 of the AC contactor KM2, is connected to the first connection terminal of the air conditioner unit load's power supply. The live wire L2 of the standby power supply, after passing through terminals 4 and 3 of the standby overcurrent circuit breaker QF2 and terminals 4 and 3 of the AC contactor KM2, is connected to the second connection terminal of the air conditioner unit load's power supply. The live wire L3 of the standby power supply, after passing through terminals 6 and 5 of the standby overcurrent circuit breaker QF2 and terminals 6 and 5 of the AC contactor KM2, is connected to the third connection terminal of the air conditioner unit load's power supply. The neutral wire N of the standby power supply, after passing through terminals 8 and 7 of the standby overcurrent circuit breaker QF2, is connected to the fourth connection terminal of the air conditioner unit load's power supply. The PE terminal of the standby power supply is connected to the power ground PE. Terminal 2 of the contact of AC contactor KM2, after passing through terminals A2 and A1 of the coil of AC contactor KM2, terminals 10 and 2 of the contact of intermediate relay KA1, and terminals 21 and 22 of the contact of AC contactor KM1, is connected to terminal 7 of the standby overcurrent circuit breaker QF2.

[0090] In the solution of this utility model, as follows: Figure 2 The dual power switching device with dual-path switching function shown is integrated into an irregularly shaped (such as L-shaped) electrical box. The space layout of the electrical box needs to be planned reasonably to ensure that all electrical components can be installed safely and effectively, while also taking into account the needs of heat dissipation, operation and maintenance.

[0091] In some embodiments, when the irregular structure is an L-shaped structure and the overcurrent circuit breaker module includes a first overcurrent circuit breaker 5 and a second overcurrent circuit breaker 6, the first overcurrent circuit breaker 5 and the second overcurrent circuit breaker 6 are located on the short side of the L-shaped structure; the hollow portion on the cover includes: the on / off port 1 of the first overcurrent circuit breaker 5 and the on / off port 2 of the second overcurrent circuit breaker 6.

[0092] On the cover of irregularly shaped (e.g., L-shaped) electrical boxes, the part corresponding to the overcurrent circuit breaker is cut out, for example... Figure 3 The openings are located at the on / off contact 1 of the first overcurrent circuit breaker (i.e., the on / off contact of the commonly used overcurrent circuit breaker QF1) and the on / off contact 2 of the second overcurrent circuit breaker (i.e., the on / off contact of the standby overcurrent circuit breaker QF2). The electrical box cover is also L-shaped and can be assembled from sheet metal as usual.

[0093] In this invention, the electrical box cover is made open above the overcurrent circuit breaker, which facilitates convenient and quick on / off control, and provides operators and maintenance personnel with a suitable view and space for inspection work. Preferably, the overcurrent circuit breaker is placed as an air switch on the short side of the L-shape and is made open, resulting in a reasonable layout and aesthetically pleasing wiring.

[0094] In some embodiments, on the cover, the on / off port 1 of the first overcurrent circuit breaker 5 is located at the top of the position corresponding to the lever of the first overcurrent circuit breaker 5; the on / off port 2 of the second overcurrent circuit breaker 6 is located at the top of the position corresponding to the lever of the second overcurrent circuit breaker 6.

[0095] When the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, the cover is further provided with a power inlet hole 3 for the first power supply and a power inlet hole 4 for the second power supply. On the cover, the power inlet hole 3 for the first power supply is located at the bottom of the position corresponding to the lever of the first overcurrent circuit breaker 5; the power inlet hole 4 for the second power supply is located at the bottom of the position corresponding to the lever of the second overcurrent circuit breaker 6.

[0096] like Figure 3 As shown, on the electrical box cover on the short side of the L-shaped electrical box, there are the following: the on / off port of the first overcurrent circuit breaker (i.e., the on / off port of the commonly used overcurrent circuit breaker QF1) 1, the on / off port of the second overcurrent circuit breaker (i.e., the on / off port of the standby overcurrent circuit breaker QF2) 2, the power line inlet hole of the first power supply (i.e., the power line inlet hole of the commonly used power supply) 3, and the power line inlet hole of the second power supply (i.e., the power line inlet hole of the standby power supply) 4.

[0097] In this field, integrating a dual-power switching device with dual-path switching capability into an irregularly shaped (e.g., L-shaped) electrical box requires careful planning of the box's spatial layout to ensure the safe and efficient installation of all electrical components, while also considering heat dissipation, operation, and maintenance needs. In the solution of this utility model, as in... Figure 3 and Figure 4 In the example shown, the L-shaped electrical box for the air conditioner adopts an L-shaped structure. The bent bottom houses the primary and backup overcurrent circuit breakers for the dual power supply switching device. Openings are provided at the top of the two overcurrent circuit breakers at the lever positions for easy control of the air conditioner unit's on / off operation. Two cable inlets are provided at the bottom of the overcurrent circuit breakers: one for the primary power supply and one for the backup power supply. This ensures the electrical box is large enough to accommodate all electrical components while leaving sufficient space for heat dissipation and maintenance. Through its unique design advantages, it provides a more optimized solution for various complex application scenarios in terms of space utilization, environmental adaptability, operational safety, and cost-effectiveness. For example, when the width or height of the air conditioner unit is limited, the electrical box is not limited to a rectangle; it can be L-shaped as described in the utility model, and the lengths of the two sides of the L-shape can be flexibly selected, greatly optimizing space utilization. The L-shaped structure, combined with dual power supplies, offers significantly superior safety and space utilization.

[0098] Since the processing and functions realized by the air conditioner of the embodiment are basically corresponding to the embodiments, principles and examples of the device, the description of the embodiment is not described in detail, and the related description in the foregoing embodiments can be referred to, and will not be described here.

[0099] In summary, those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0100] The above only describes the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. An electrical box, characterized by, The utility model relates to an electric appliance box, including: a box body and a box cover, the box body has a containing cavity, and the box cover covers the box body to cover the containing cavity of the box body, wherein, the box body adopts a preset special-shaped structure, and the special-shaped structure has a bending part; a maintenance structure is arranged at a preset operation position on the box cover to facilitate an operator to operate through the maintenance structure on the box cover.

2. The electrical box of Claim 1, wherein, Further comprising: a dual-power switching device arranged in the containing cavity of the box body; the dual-power switching device includes an overcurrent circuit breaker module, and the overcurrent circuit breaker module is located at the bending part of the special-shaped structure in the containing cavity of the box body; the position on the box cover corresponding to the overcurrent circuit breaker module is a preset operation position, and the maintenance structure includes a hollow part, and the hollow part is arranged at the position on the box cover corresponding to the overcurrent circuit breaker module to enable the operator to operate the overcurrent circuit breaker module through the hollow part on the box cover.

3. The electrical box of Claim 2, wherein, The special-shaped structure has a short side part and a long side part, and in the case that the box body is vertically placed, the maximum height of the long side part of the special-shaped structure is greater than the maximum height of the short side part of the special-shaped structure; the transition between the short side part of the special-shaped structure and the long side part of the special-shaped structure forms the bending part of the special-shaped structure; in the case that the electric appliance box further includes a dual-power switching device, the overcurrent circuit breaker module is located at the bending part of the special-shaped structure in the containing cavity of the box body.

4. The electrical box of Claim 3, wherein, The special-shaped structure includes any one of the following structures: an L-shaped structure, an upright trapezoidal structure, an inverted trapezoidal structure, and a T-shaped structure.

5. The electrical device box of claim 3, wherein, The overcurrent circuit breaker module includes a first overcurrent circuit breaker (5), a second overcurrent circuit breaker (6), and a third overcurrent circuit breaker (9), wherein, in the containing space of the box body, the first overcurrent circuit breaker (5) and the second overcurrent circuit breaker (6) are located at the short side part of the special-shaped structure, and the third overcurrent circuit breaker (9) is located at the long side part of the special-shaped structure at the bending part of the special-shaped structure.

6. The electrical box of Claim 3, wherein, The power switching device further includes a first AC contactor (7), a second AC contactor (8), and a first relay (10), wherein, in the containing space of the box body, the first AC contactor (7), the second AC contactor (8), and the first relay (10) are all located at the long side part of the special-shaped structure at the bending part of the special-shaped structure.

7. The electrical device box of claim 5, wherein, The power switching device further includes a first AC contactor (7), a second AC contactor (8), and a first relay (10), wherein, in the containing space of the box body, the first AC contactor (7), the second AC contactor (8), and the first relay (10) are all located at the long side part of the special-shaped structure at the bending part of the special-shaped structure. Wherein, in the case that the first over-current circuit breaker (5) and the second over-current circuit breaker (6) are arranged in a preset first direction in sequence, the first AC contactor (7), the second AC contactor (8), the third over-current circuit breaker (9) and the first relay (10) are also arranged in a preset first direction in sequence.

8. The electrical box of Claim 7, wherein, Wherein, The distance between the third over-current circuit breaker (9) and the first relay (10) is less than a preset distance; And / or, In the case that the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, the first power supply is connected to the power supply end of the load after the first over-current circuit breaker (5) and the first AC contactor (7); the second power supply is connected to the power supply end of the load after the second over-current circuit breaker (6) and the second AC contactor (8); the contacts of the first relay (10) are connected with the coils of the first AC contactor (7) and the second AC contactor (8) respectively; the coil of the first relay (10) is connected with the third over-current circuit breaker (9).

9. The electrical box of Claim 8, wherein, In the case that the special-shaped structure has a short side part and a long side part, and the over-current circuit breaker module includes a first over-current circuit breaker (5) and a second over-current circuit breaker (6), the first over-current circuit breaker (5) and the second over-current circuit breaker (6) are located at the short side part of the special-shaped structure; the hollow part on the box cover includes the on-off port (1) of the first over-current circuit breaker (5) and the on-off port (2) of the second over-current circuit breaker (6).

10. The electrical box of Claim 9, wherein, On the box cover, the on-off port (1) of the first over-current circuit breaker (5) is located at the top of the position corresponding to the paddle of the first over-current circuit breaker (5); the on-off port (2) of the second over-current circuit breaker (6) is located at the top of the position corresponding to the paddle of the second over-current circuit breaker (6); In the case that the dual power supply of the dual power supply switching device includes a first power supply and a second power supply, on the box cover, a power line inlet hole (3) of the first power supply corresponding to the first power supply and a power line inlet hole (4) of the second power supply corresponding to the second power supply are also provided; On the box cover, the power line inlet hole (3) of the first power supply is located at the bottom of the position corresponding to the paddle of the first over-current circuit breaker (5); the power line inlet hole (4) of the second power supply is located at the bottom of the position corresponding to the paddle of the second over-current circuit breaker (6).

11. An air conditioner characterized by comprising: Comprise: The electrical appliance box of any one of claims 1 to 10. The electrical appliance box of any one of claims 1 to 10.

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