For fixing structures of electrical components, electrical boxes, fan coil units and air conditioners

Abstract

The present invention discloses a fixing structure for electrical components, an electrical box, a fan coil unit and an air conditioner, relates to the technical field of air conditioning, and solves the technical problem of insufficient space for the electrical box in the prior art. The fixing structure of the present invention comprises a first fixing plate, a second fixing plate and a bottom plate, one end of the first fixing plate and one end of the second fixing plate are fixed to the bottom plate, the other end of the first fixing plate is connected to the other end of the second fixing plate, an angle less than 180° is formed between the first fixing plate and the second fixing plate, and a receiving space is formed between the first fixing plate, the second fixing plate and the bottom plate, and the outer surface of the first fixing plate, the outer surface of the second fixing plate and / or the receiving space are used to fix the electrical components. The fixing structure of the present invention can greatly save space, so it can be used in units with size restrictions.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a fixing structure for electrical components, an electrical box, a fan coil unit and an air conditioner. Background Art

[0002] The fan coil unit of the central air conditioning terminal unit is an essential air handling unit in air conditioning engineering. The fan coil unit in the prior art generally only provides the functions of air purification and air exchange. At present, users have proposed the need to add water valve cooling and electric heating to the fan coil unit for heating control. Therefore, it is necessary to break the conventional fan coil unit structure and add water valve cooling and / or electric heating to the fan coil unit for heating control to meet the non-standard requirements of users.

[0003] The applicant found that since the fan coil units in the prior art do not have the PTC electric heating function, if it is necessary to develop a fan coil unit with the PTC electric heating function, there are at least the following technical problems:

[0004] (1) An electric heating structure needs to be added. Due to the limitation of the overall structure, the size, position and dimensions of the electrical box cannot be changed and must be consistent with the existing electrical box.

[0005] (2) The main control board in the prior art is used to control electric heating. The cost of fan coil units is too high, and the AC contactor of the electric heating is prone to adhesion protection problems. Once the AC contactor fails, the power supply cannot be cut off normally, resulting in dry burning of the electric heating and fire, which poses a great safety hazard.

[0006] (3) Due to the assembly restrictions of the motor, the length of the motor wire cannot be changed. According to the wire routing method of the prior art, the motor wire is too short, the motor wire is difficult to pass through the wire hole, and it is difficult to fix it. Summary of the invention

[0007] One of the purposes of the present invention is to provide a fixing structure for electrical components, an electrical box, a fan coil unit and an air conditioner, which solves the technical problem of insufficient electrical box space in the prior art. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The fixing structure of the present invention is used for electrical components, and includes a first fixing plate, a second fixing plate and a base plate, wherein one end of the first fixing plate and one end of the second fixing plate are fixed to the base plate, the other end of the first fixing plate is connected to the other end of the second fixing plate, an angle less than 180° is formed between the first fixing plate and the second fixing plate, and a receiving space is formed between the first fixing plate, the second fixing plate and the base plate, and the outer surface of the first fixing plate, the outer surface of the second fixing plate and / or the receiving space are used to fix the electrical components.

[0010] According to a preferred embodiment, the angle formed between the first fixing plate and the second fixing plate is less than 90°.

[0011] According to a preferred embodiment, the fixing structure for electrical components also includes a wire passing plate, which is located on the base plate, one end of the wire passing plate is connected to one end of the second fixing plate fixed to the base plate, and an angle less than 180° is formed between the wire passing plate and the second fixing plate.

[0012] According to a preferred embodiment, the angle formed between the wire-passing plate and the second fixing plate is less than 90°.

[0013] According to a preferred embodiment, the first fixing plate, the second fixing plate and the wire-passing plate are formed into a Z-shaped structure.

[0014] According to a preferred embodiment, at least one motor wire passing hole for fixing the motor wire is provided on the wire passing plate, and the motor wire passing hole is a semicircular notched hole.

[0015] According to a preferred embodiment, the motor wire passing hole includes a first motor wire passing hole and a second motor wire passing hole, the first motor wire passing hole and the second motor wire passing hole are respectively used to fix the motor wires of two motors; and the first motor wire passing hole and the second motor wire passing hole are arranged close to each other.

[0016] According to a preferred embodiment, the wire passing plate is further provided with a wire controller wire passing rubber ring and a power supply wire passing rubber ring, and the wire controller wire passing rubber ring and the power supply wire passing rubber ring are used for wire controller and power supply routing respectively.

[0017] According to a preferred embodiment, a plurality of branch wire ties are further provided on the first fixing plate and / or the second fixing plate, and the plurality of branch wire ties are used to fix the wiring.

[0018] The electrical appliance box of the present invention comprises the fixing structure for electrical components described in any technical solution of the present invention.

[0019] According to a preferred embodiment, a live AC contactor and a neutral AC contactor are fixed on the first fixed plate and / or the second fixed plate, wherein the live AC contactor and the neutral AC contactor are connected in parallel, and the live AC contactor and the neutral AC contactor are respectively used to control the live wire and the neutral wire of the electric heating power supply.

[0020] According to a preferred embodiment, the number of the live line AC contactor is at least one; the number of the neutral line AC contactor is at least one.

[0021] The fan coil unit of the present invention comprises the electrical appliance box described in any technical solution of the present invention.

[0022] According to a preferred embodiment, the fan coil unit further comprises a body, and the electrical box is arranged on the left side or the right side of the body.

[0023] According to a preferred embodiment, the fan coil unit further comprises at least two groups of PTC electric heaters, the PTC electric heaters are arranged on the body, and the PTC electric heaters are controlled by strong electricity.

[0024] According to a preferred embodiment, the fan coil unit further comprises an electrically heated wire-passing rubber ring, and the electrically heated wire-passing rubber ring is located on the outer surface of the box body of the electrical box.

[0025] According to a preferred embodiment, the fan coil unit further includes at least one DC motor and at least two motor blades, the DC motor and the motor blades are arranged on the body, and the DC motor is used to drive the motor blades to rotate.

[0026] According to a preferred embodiment, the fan coil unit further comprises a temperature limiter and a fuse, the temperature limiter and the fuse are arranged on the body, and the temperature limiter and the fuse are connected in series and connected to the PTC electric heater.

[0027] The air conditioner of the present invention comprises the fan coil unit described in any technical solution of the present invention.

[0028] The fixing structure for electrical components, the electrical box, the fan coil unit and the air conditioner provided by the present invention have at least the following beneficial technical effects:

[0029] The fixing structure of the present invention is used for electrical components, and includes a first fixing plate, a second fixing plate and a bottom plate, wherein one end of the first fixing plate and one end of the second fixing plate are fixed to the bottom plate, the other end of the first fixing plate is connected to the other end of the second fixing plate, an angle less than 180° is formed between the first fixing plate and the second fixing plate, and a receiving space is formed between the first fixing plate, the second fixing plate and the bottom plate, and the outer surface of the first fixing plate, the outer surface of the second fixing plate and / or the receiving space can all be used to fix the electrical components, which can greatly save space and does not affect electrical safety.

[0030] That is, the fixing structure for electrical components of the present invention, which fixes electrical components through the outer surface of the first fixing plate, the outer surface of the second fixing plate and / or the accommodating space, can be used in units with size restrictions.

[0031] The electrical box of the present invention, including any technical solution of the present invention for fixing the structure of electrical components, can greatly save the space of the electrical box, so that the size of the electrical box can be consistent with that of the electrical box without PTC electric heating, and the electrical safety is not affected. That is, the electrical box of the present invention, including any technical solution of the present invention for fixing the structure of electrical components, solves the technical problem of insufficient space of the electrical box in the prior art.

[0032] In addition, the preferred technical solution of the present invention also has the following beneficial technical effects:

[0033] The preferred technical solution of the present invention is used for the fixing structure of the electrical component, and a first motor wire passing hole and a second motor wire passing hole are arranged on the wire passing plate, and the first motor wire passing hole and the second motor wire passing hole are semicircular notched holes. A motor wire passing hole position is also arranged on the body of the fan coil unit, and the motor wire can be directly introduced from the outside through the motor wire passing hole position, and then rotated to be fixed on the first motor wire passing hole and / or the second motor wire passing hole, without having to be inserted into the electrical box in advance, which is conducive to motor maintenance. When the motor fails, it can be repaired without disassembling the electrical box; on the other hand, the second motor wire passing hole and the first motor wire passing hole are arranged close to each other, that is, the second motor wire passing hole and the first motor wire passing hole are located adjacent to each other, which can avoid the problem of the motor wire being too short, and solves the problem that the motor wire length cannot be changed due to the assembly limitation of the motor, and the wiring according to the wire passing hole structure of the prior art has the technical problem that the motor wire length is too short and the motor wire is difficult to pass through the wire hole position.

[0034] In the electrical box of the preferred technical solution of the present invention, a live AC contactor and a neutral AC contactor are fixed on the first fixed plate and / or the second fixed plate. The live AC contactor and the neutral AC contactor are respectively used to control the live wire and the neutral wire of the electric heating power supply. When the wire controller sends a power-off command, the unit will not have adhesion protection unless the live AC contactor and the neutral AC contactor are powered off at the same time, thereby improving its safety performance and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of a preferred embodiment of the electrical box of the present invention;

[0037] Figure 2 is a first side view of a preferred embodiment of the electrical box of the present invention;

[0038] Figure 3 is a second side view of a preferred embodiment of the electrical box of the present invention;

[0039] Figure 4 It is a first schematic diagram of a preferred embodiment of the fan coil unit of the present invention;

[0040] Figure 5 It is a second schematic diagram of a preferred embodiment of the fan coil unit of the present invention.

[0041] In the figure: 1, electrical box; 10, box body; 11, first fixing plate; 12, second fixing plate; 13, bottom plate; 14, wire plate; 141, first motor wire hole; 142, second motor wire hole; 143, wire controller wire rubber ring; 144, power wire rubber ring; 15, branch wire tie; 16, live wire AC contactor; 17, neutral wire AC contactor; 18, terminal block; 19, fan capacitor; 21, body; 22, PTC electric heater; 23, electric heating wire rubber ring; 24, DC motor; 25, motor fan blade; 26, water valve; 27, temperature limiter; 28, fuse; 29, motor wire hole. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0043] The following is attached to the instruction manual Figures 1 to 5 And embodiments 1 to 4 describe in detail the fixing structure for electrical components, electrical box, fan coil unit and air conditioner of the present invention.

[0044] Example 1

[0045] This embodiment combines Figures 1 to 3 The fixing structure for electrical components of the present invention is described in detail.

[0046] The fixing structure of the electrical components of this embodiment includes a first fixing plate 11, a second fixing plate 12 and a bottom plate 13. Figure 1 As shown. Among them, one end of the first fixing plate 11 and one end of the second fixing plate 12 are fixed on the bottom plate 13, the other end of the first fixing plate 11 is connected to the other end of the second fixing plate 12, the first fixing plate 11 and the second fixing plate 12 form an angle less than 180°, and a receiving space is formed between the first fixing plate 11, the second fixing plate 12 and the bottom plate 13, and the outer surface of the first fixing plate 11, the outer surface of the second fixing plate 12 and / or the receiving space are used to fix electrical components. Preferably, the electrical components are, for example, one or more of the control components, or one or more of the switching components.

[0047] The fixing structure of the electrical components in this embodiment includes a first fixing plate 11, a second fixing plate 12 and a bottom plate 13, wherein one end of the first fixing plate 11 and one end of the second fixing plate 12 are fixed on the bottom plate 13, the other end of the first fixing plate 11 is connected to the other end of the second fixing plate 12, an angle less than 180° is formed between the first fixing plate 11 and the second fixing plate 12, and a receiving space is formed between the first fixing plate 11, the second fixing plate 12 and the bottom plate 13, the outer surface of the first fixing plate 11, the outer surface of the second fixing plate 12 and / or the receiving space can be used to fix the electrical components, which can greatly save space and the electrical safety is not affected.

[0048] That is, the fixing structure for electrical components in this embodiment, which fixes electrical components through the outer surface of the first fixing plate 11, the outer surface of the second fixing plate 12 and / or the accommodating space, can be used in units with size restrictions.

[0049] According to a preferred embodiment, the angle formed between the first fixing plate 11 and the second fixing plate 12 is less than 90°. Figure 1 As shown, an inverted V-shaped structure is formed between the first fixing plate 11 and the second fixing plate 12. The outer surface of the first fixing plate 11, the outer surface of the second fixing plate 12 and / or the accommodating space are used to fix the structure of electrical components, which can greatly save space and solve the problem of limitation on the size of the unit.

[0050] According to a preferred embodiment, the fixing structure for electrical components further includes a wire-passing plate 14, such as Figures 1 to 3 As shown in one of them. Preferably, the wire-passing plate 14 is located on the base plate 13, one end of the wire-passing plate 14 is connected to one end of the second fixed plate 12 fixed on the base plate 13, and an angle less than 180° is formed between the wire-passing plate 14 and the second fixed plate 12. Preferably, the angle formed between the wire-passing plate 14 and the second fixed plate 12 is less than 90°. Preferably, the first fixed plate 11, the second fixed plate 12 and the wire-passing plate 14 form a Z-shaped structure. The wire-passing plate 14 of the preferred technical solution of this embodiment can be used for wire passing of electrical components, and an angle less than 180° is formed between the wire-passing plate 14 and the second fixed plate 12, which can further save space.

[0051] According to a preferred embodiment, at least one motor wire passing hole for fixing the motor wire is provided on the wire passing plate 14, and the motor wire passing hole is a semicircular notch, such as Figure 1 Or as shown in 3. The preferred technical solution of this embodiment is provided with a semicircular notched motor wire hole on the wire plate 14. During installation, the motor wire can be clamped in the semicircular notched hole by rotating the buckle at the motor wire corrugated tube, thereby fixing the motor wire. That is, the preferred technical solution of this embodiment solves the technical problem of difficult fixing of the motor wire by providing a semicircular notched motor wire hole.

[0052] Preferably, the preferred technical solution of this embodiment has one or two motor wire passing holes on the wire passing plate 14. Specifically, for a small unit fan coil, it has only one DC motor 24, so only one motor wire passing hole can be set on the wire passing plate 14. For a large unit fan coil, it has two DC motors 24, so two motor wire passing holes need to be set on the wire passing plate 14, and one motor wire passing hole is used to fix the wire of one DC motor 24.

[0053] According to a preferred embodiment, the wire plate 14 is provided with a first motor wire hole 141 and a second motor wire hole 142, and the first motor wire hole 141 and the second motor wire hole 142 are respectively used to fix the motor wires of the two motors; and the first motor wire hole 141 and the second motor wire hole 142 are arranged close to each other, such as Figure 1Or as shown in Figure 3. Preferably, the first motor wire through hole 141 is located at the end of the wire plate 14, and the second motor wire through hole 142 is arranged close to the first motor wire through hole 141. Preferably, the body 21 is provided with a motor wire through hole position 29.

[0054] In the prior art, left and right wire holes are symmetrically opened along the center line of the electrical box. When the unit is assembled, the motor wires need to be inserted into the wire holes in advance. Later, the electrical box needs to be disassembled for motor maintenance, which makes later maintenance inconvenient. In addition, the motor holes in the prior art cannot fix the motor wires, making the motor wires relatively loose.

[0055] The preferred technical solution of this embodiment is to provide a first motor wire passing hole 141 and a second motor wire passing hole 142 on the wire passing plate 14, and the first motor wire passing hole 141 and the second motor wire passing hole 142 are semicircular notched holes. Preferably, a motor wire passing hole position 29 is also provided on the body 21 of the fan coil unit. The motor wire can be directly introduced from the outside through the motor wire passing hole position 29, and then rotated to be fixed on the first motor wire passing hole 141 and / or the second motor wire passing hole 142 without being pre-inserted into the electrical box, thereby avoiding the problem in the prior art that the motor wire needs to be installed in the electrical box in advance during production, which is conducive to motor maintenance. When the motor fails, it can be repaired without disassembling the electrical box.

[0056] On the other hand, the second motor wire passing hole 142 and the first motor wire passing hole 141 are arranged close to each other, that is, the second motor wire passing hole 142 and the first motor wire passing hole 141 are located adjacent to each other, which can avoid the problem of the motor wire being too short, and solves the technical problem that the motor wire length cannot be changed due to the assembly limitation of the motor, and the wiring is routed according to the wire passing hole structure of the prior art, such as the motor wire is too short and the motor wire is difficult to pass through the wire hole.

[0057] Specifically, the left-type electrical box and the right-type electrical box in the prior art are symmetrical, and the motor wire holes are set on both sides of the electrical box, while the left-type electrical box and the right-type electrical box in this embodiment are not symmetrical. When the motor wire passes through the farther hole, the motor wire will be too short. For example, when the left-type unit passes through the right wire hole, the motor wire is too short; when the right-type unit passes through the left wire hole, the motor wire is too short. The second motor wire hole 142 and the first motor wire hole 141 of the preferred technical solution of this embodiment are arranged close to each other, and the problem of the motor wire being too short will not occur regardless of the left-type electrical box or the right-type electrical box.

[0058] According to a preferred embodiment, the wire-passing plate 14 is also provided with a wire-controller wire-passing rubber ring 143 and a power wire-passing rubber ring 144, which are used for routing the wire-controller and the power wire, respectively. Preferably, the power wire-passing rubber ring 144 is located at the other end of the wire-passing plate 14, and the wire-controller wire-passing rubber ring 143 is located between the power wire-passing rubber ring 144 and at least one motor wire-passing hole, such as Figure 1 Specifically, the wire controller wire rubber ring 143 is located between the power wire rubber ring 144 and the second motor wire hole 142, as shown in FIG. Figure 1 Or 3. The wire control board of the preferred technical solution of this embodiment is provided with a wire controller wire rubber ring 143 and a power supply wire rubber ring 144, through which the wire controller wire rubber ring 143 and the power supply wire rubber ring 144 can protect and fix the wire controller wire and the power supply wire respectively.

[0059] According to a preferred embodiment, a plurality of branch wire ties 15 are further provided on the first fixing plate 11 and / or the second fixing plate 12, and the plurality of branch wire ties 15 are used to fix the wiring. Figures 1 to 3 The first fixing plate 11 and / or the second fixing plate 12 of the preferred technical solution of this embodiment are also provided with a plurality of branch wire ties 15, and the wiring is fixed by the branch wire ties 15, which can avoid short circuit caused by contact of each line, thereby improving the safety performance of the unit.

[0060] Example 2

[0061] This embodiment combines Figures 1 to 4 The electric appliance box of the present invention is described in detail.

[0062] The electrical box 1 of this embodiment includes a fixing structure for electrical components of any technical solution in Embodiment 1, such as Figures 1 to 3 Preferably, the electrical box further comprises a box body 10, the box body 10 is a square structure, and the fixing structure for the electrical components is located inside the box body 10, as shown in FIG. Figure 4 The box body 10 can protect the electrical components on the fixing structure of the electrical components.

[0063] The electrical box of this embodiment includes any one of the technical solutions of embodiment 1 for fixing the electrical components, which can greatly save the space of the electrical box, so that the size of the electrical box can be consistent with that of the electrical box without PTC electric heating, and the electrical safety is not affected. That is, the electrical box of this embodiment includes any one of the technical solutions of embodiment 1 for fixing the electrical components, which solves the technical problem of insufficient space for the electrical box in the prior art.

[0064] According to a preferred embodiment, a live AC contactor 16 and a neutral AC contactor 17 are fixed to the first fixed plate 11 and / or the second fixed plate 12, wherein the live AC contactor 16 and the neutral AC contactor 17 are connected in parallel, and the live AC contactor 16 and the neutral AC contactor 17 are used to control the live wire and the neutral wire of the electric heating power supply, respectively. Preferably, the live AC contactor 16 and the neutral AC contactor 17 are fixed to the outer surface of the first fixed plate 11 and / or the second fixed plate 12. More preferably, the live AC contactor 16 and the neutral AC contactor 17 are fixed to the outer surface of the first fixed plate 11, such as Figure 1 shown.

[0065] The electric heating power supply in the prior art is controlled by an AC contactor. The two main contacts of the single-phase AC contactor are respectively connected to the two single-phase power supplies of the load. The electric heating AC contactor is prone to the problem of adhesion protection. Once the AC contactor fails, the main contacts of the AC contactor cannot be disconnected normally, resulting in the electric heating still heating after the wire controller controls the AC contactor coil to cut off power, which causes dry burning and poses a great safety hazard.

[0066] In the preferred technical solution of this embodiment, a live AC contactor 16 and a neutral AC contactor 17 are fixed on the first fixed plate 11 and / or the second fixed plate 12. The live AC contactor 16 and the neutral AC contactor 17 are respectively used to control the live wire and the neutral wire of the electric heating power supply. When the wire controller sends a power-off command, unless the live AC contactor 16 and the neutral AC contactor 17 are powered off at the same time, the unit will have adhesion protection, thereby improving safety performance.

[0067] Preferably, the number of live wire AC contactors 16 is at least one; the number of neutral wire AC contactors 17 is at least one. The live wire of the power supply can also use two or more live wire AC contactors 16, and similarly, the neutral wire can also use two or more neutral wire AC contactors 17, that is, the live wire and the neutral wire can use multiple AC contactors for multiple power-off protection, and the more AC contactors are used, the higher the safety performance.

[0068] According to a preferred embodiment, a wiring board 18 is also fixed on the first fixing plate 11 or the second fixing plate 12. Figure 1 Preferably, the terminal block 18 is fixed to the outer surface of the first fixing plate 11 or the second fixing plate 12. More preferably, the terminal block 18 is fixed to the outer surface of the second fixing plate 12, as shown in FIG. Figure 1 The terminal block 18 is a switching component that can connect two electrical components.

[0069] Preferably, the preferred technical solution of this embodiment uses a wire controller to control the coil of the AC contactor with strong electricity, and does not directly supply power to the load, but indirectly controls the on and off of the power supply of the load. Specifically, the wire controller (not shown in the figure) is generally installed on the indoor wall, and the wire controller is connected to the terminal block 18 on the unit, and the terminal block 18 is connected to the coil of the AC contactor to control the start and stop of the electric heating power supply. At the same time, the wire controller is also connected to the high, medium and low power supplies of the motor to control the start and stop and speed of the motor. The wire controller has reserved wiring terminals, which can be connected to the terminal block 18. That is, the preferred technical solution of this embodiment controls the coil of the AC contactor through the wire controller, and controls the electric heating power supply through the AC contactor coil; preferably, the wire controller is also used to control the fan.

[0070] According to a preferred embodiment, a fan capacitor 19 is fixed in the accommodation space formed between the first fixing plate 11, the second fixing plate 12 and the bottom plate 13. Figure 1 Since the fan capacitor 19 generally does not need to be changed after installation, fixing it in the accommodation space formed between the first fixing plate 11, the second fixing plate 12 and the bottom plate 13 can improve the space utilization of the electrical box and greatly save space.

[0071] Example 3

[0072] This embodiment combines Figure 4 and 5 The fan coil unit of the present invention is described in detail.

[0073] The fan coil unit of this embodiment includes an electrical box 1 of any technical solution in Embodiment 2, such as Figure 4 Or 5. The fan coil unit of this embodiment has a PTC electric heating function, which can meet the non-standard requirements of users; on the other hand, since the fan coil unit of this embodiment includes the electrical box of any technical solution of Example 2, the space of the electrical box can be greatly saved, so that the size of the electrical box can be consistent with that of the electrical box without PTC electric heating, and the electrical safety is not affected.

[0074] According to a preferred embodiment, the fan coil unit further comprises a body 21, and the electrical box 1 is arranged on the left or right side of the body 21. The electrical box 1 of the fan coil unit of the preferred technical solution of this embodiment can be arranged on the left side of the body 21. In this case, the fan coil unit is a left-type structure, such as Figure 4 The electrical box 1 can also be arranged on the right side of the body 21, in which case the fan coil unit is a right-type structure, such as Figure 4 shown. Figure 4 In the embodiment, the electrical appliance boxes 1 on the left and right sides of the body 21 are not provided at the same time.

[0075] According to a preferred embodiment, the fan coil unit further comprises at least two groups of PTC electric heaters 22, the PTC electric heaters 22 are arranged on the body 21, and the PTC electric heaters 22 are controlled by strong electricity, such as Figure 4 As shown. Due to the limitation of the whole machine structure, the cost of the fan is too high if the main control board is used to control the electric heating. The preferred technical solution of this embodiment uses strong electricity to control the PTC electric heater 22, which can reduce the cost of the fan. Preferably, at least two groups of PTC electric heaters 22 are connected in parallel, and at least two groups of PTC electric heaters 22 only lead out one group of power lines.

[0076] Preferably, for a fan coil unit of a small unit, it includes two groups of PTC electric heaters 22; for a fan coil unit of a large unit, it includes three groups of PTC electric heaters 22. More preferably, at least two groups of PTC electric heaters 22 are turned on and off at the same time. More preferably, at least two groups of PTC electric heaters 22 are connected in parallel internally, and at least two groups of PTC electric heaters 22 only lead out one group of power lines.

[0077] According to a preferred embodiment, the fan coil unit further includes an electric heating wire rubber ring 23, and the electric heating wire rubber ring 23 is located on the outer surface of the box body 10 of the electrical box 1, such as Figure 4 The fan coil unit of the preferred technical solution of this embodiment is provided with an electric heating wire rubber ring 23, through which the wire of the PTC electric heater 22 can be protected and fixed.

[0078] According to a preferred embodiment, the fan coil unit further includes at least one DC motor 24 and at least two motor blades 25, the DC motor 24 and the motor blades 25 are arranged on the body 21, and the DC motor 24 is used to drive the motor blades 25 to rotate. Specifically, for a fan coil unit of a small unit, it includes one DC motor 24 and two motor blades 25, and one DC motor 24 is used to power the two motor blades 25; for a fan coil unit of a large unit, it includes two DC motors 24 and three motor blades 25, and two DC motors 24 are used to power the three motor blades 25.

[0079] According to a preferred embodiment, the fan coil unit further includes a water valve 26. Preferably, the water valve 26 is disposed on the side of the body 21, such as Figure 4 shown.

[0080] According to a preferred embodiment, the fan coil unit further comprises a temperature limiter 27 and a fuse 28. Preferably, the temperature limiter 27 and the fuse 28 are arranged on the body 21, and the temperature limiter 27 and the fuse 28 are connected in series with at least two groups of PTC electric heaters 22, such as Figure 4As shown. Preferably, the temperature limiter 27 and the fuse 28 are controlled by a wire controller. The preferred technical solution of this embodiment is to set the temperature limiter 27 and the fuse 28, and the temperature limiter 27 and the fuse 28 are connected in series with at least two groups of PTC electric heaters 22, so that the power supply can be disconnected when the temperature of the PTC electric heater 22 is too high and / or the current is too large, thereby protecting the fan coil.

[0081] Example 4

[0082] This embodiment describes the air conditioner of the present invention in detail.

[0083] The air conditioner of this embodiment includes the fan coil unit of any technical solution in Embodiment 3. The air conditioner of this embodiment includes the fan coil unit of any technical solution in Embodiment 3, so that it has the PTC electric heating function, which can meet the non-standard requirements of users; on the other hand, since the fan coil unit of this embodiment includes the electrical box of any technical solution in Embodiment 2, the space of the electrical box can be greatly saved, so that the size of the electrical box can be kept consistent with that of the electrical box without PTC electric heating, and the electrical safety is not affected.

[0084] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fixing structure for electrical components, characterized in that: The invention comprises a first fixing plate (11), a second fixing plate (12) and a bottom plate (13), wherein one end of the first fixing plate (11) and one end of the second fixing plate (12) are fixed on the bottom plate (13), the other end of the first fixing plate (11) is connected to the other end of the second fixing plate (12), and an angle less than 180° is formed between the first fixing plate (11) and the second fixing plate (12), A receiving space is formed between the first fixing plate (11), the second fixing plate (12) and the bottom plate (13), and the outer surface of the first fixing plate (11), the outer surface of the second fixing plate (12) and / or the receiving space are used to fix the electrical components; It also includes a wire-passing plate (14), the wire-passing plate (14) being located on the bottom plate (13), one end of the wire-passing plate (14) being connected to one end of the second fixing plate (12) fixed to the bottom plate (13), and an angle of less than 180° is formed between the wire-passing plate (14) and the second fixing plate (12); The first fixing plate (11), the second fixing plate (12) and the wire-passing plate (14) form a Z-shaped structure.

2. The fixing structure for electrical components according to claim 1, characterized in that: The angle formed between the first fixing plate (11) and the second fixing plate (12) is less than 90°.

3. The fixing structure for electrical components according to claim 1 or 2, characterized in that: The wire passing plate (14) is provided with at least one motor wire passing hole for fixing the motor wire, and the motor wire passing hole is a semicircular notched hole.

4. The fixing structure for electrical components according to claim 3, characterized in that: The motor wire passing holes comprise a first motor wire passing hole (141) and a second motor wire passing hole (142); the first motor wire passing hole (141) and the second motor wire passing hole (142) are respectively used to fix the motor wires of two motors; and the first motor wire passing hole (141) and the second motor wire passing hole (142) are arranged close to each other.

5. The fixing structure for electrical components according to claim 3, characterized in that: The wire-passing plate (14) is also provided with a wire-controller wire-passing rubber ring (143) and a power supply wire-passing rubber ring (144); the wire-controller wire-passing rubber ring (143) and the power supply wire-passing rubber ring (144) are used for routing wires for the wire-controller and the power supply, respectively.

6. The fixing structure for electrical components according to claim 1 or 2, characterized in that: A plurality of branch wire ties (15) are also provided on the first fixing plate (11) and / or the second fixing plate (12), and the plurality of branch wire ties (15) are used to fix the wiring.

7. An electrical box, characterized in that: The fixing structure for an electrical component comprises the fixing structure for an electrical component according to any one of claims 1 to 6.

8. The electrical box according to claim 7, characterized in that: A live AC contactor (16) and a neutral AC contactor (17) are fixed on the first fixing plate (11) and / or the second fixing plate (12). The live line AC contactor (16) and the neutral line AC contactor (17) are connected in parallel, and the live line AC contactor (16) and the neutral line AC contactor (17) are used to control the live line and the neutral line of the electric heating power supply, respectively.

9. The electrical box according to claim 8, characterized in that: The number of the live line AC contactor (16) is at least one; the number of the neutral line AC contactor (17) is at least one.

10. A fan coil unit, characterized in that: An electrical box comprising any one of claims 7 to 9.

11. The fan coil unit according to claim 10, characterized in that: It also includes a body (21), and the electrical appliance box is arranged on the left side or the right side of the body (21).

12. The fan coil unit according to claim 11, characterized in that: It also comprises at least two groups of PTC electric heaters (22), wherein the PTC electric heaters (22) are arranged on the body (21), and the PTC electric heaters (22) are controlled by strong electricity.

13. The fan coil unit according to claim 11, characterized in that: It also includes an electrically heated wire-passing rubber ring (23), wherein the electrically heated wire-passing rubber ring (23) is located on the outer surface of the box body (10) of the electrical box.

14. The fan coil unit according to claim 11, characterized in that: It also comprises at least one DC motor (24) and at least two motor blades (25), wherein the DC motor (24) and the motor blades (25) are arranged on the body (21), and the DC motor (24) is used to drive the motor blades (25) to rotate.

15. The fan coil unit according to claim 12, characterized in that: It also includes a temperature limiter (27) and a fuse (28), wherein the temperature limiter (27) and the fuse (28) are arranged on the body (21), and the temperature limiter (27) and the fuse (28) are connected in series and then connected to the PTC electric heater (22).

16. An air conditioner, characterized in that: The invention comprises a fan coil unit as claimed in any one of claims 10 to 15.

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