Assembly type electrical control box

Abstract

The utility model discloses an assembly type electrical control box which comprises a control box assembly, the control box assembly comprises a box body and a base installed at the bottom of the box body, a waste heat treatment cavity is arranged in the box body, and a waste heat utilization assembly is arranged in the waste heat treatment cavity. The waste heat utilization assembly absorbs heat generated by operation of the electric devices in the inner cavity of the box body and then transmits the heat to the drying inner box in the base, and the drying inner box dissipates the received heat into the base, so that a dry space is formed in the inner cavity of the base. Effective recycling of waste heat is achieved, the requirement for additional heating equipment is reduced, and energy consumption is reduced. According to the scheme, through waste heat recycling, good heat dissipation and drying effects can be achieved under the condition that external equipment is not added, energy consumption is remarkably reduced, and the requirements for energy conservation and environmental protection are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrical control box, especially assembly type electrical control box. BACKGROUND

[0002] Assembly type electrical control box is a pre-designed, assembled complete power control system, which integrates various electrical devices and circuits, such as circuit breakers, contactors, relays, transformers, etc., for realizing control, protection, measurement and adjustment functions of power systems. This kind of control box is widely used in industrial automation, building automation, energy management and infrastructure construction fields.

[0003] In the running process of the traditional electrical control box, electrical devices (such as transformers, relays, contactors, etc.) will generate a large amount of heat. In order to ensure the normal work of these electrical devices, effective heat dissipation measures must be taken. However, the existing heat dissipation method mainly relies on natural convection or fan forced cooling, which has some shortcomings, such as: in a closed box environment, air flow is poor, heat is easy to accumulate, which leads to high temperature of electrical devices, affecting their performance and life, waste heat generated by the electrical control box is usually directly discharged to the environment without effective recycling, causing energy waste, at the same time, the base of the traditional electrical control box is close to the ground, which is easy to be affected by the humid environment, especially in the long-term humid environment, which may cause the electrical devices to be damp, short-circuit and even damaged. SUMMARY

[0004] According to one aspect of the utility model, an assembly type electrical control box is provided, which comprises a control box assembly, the control box assembly comprises a box body and a base installed at the bottom of the box body, a waste heat treatment cavity is arranged in the box body, a waste heat utilization assembly is arranged in the waste heat treatment cavity, the waste heat utilization assembly absorbs heat generated by electrical devices in the cavity of the box body during operation and then transfers the heat to a dry inner box in the base, the dry inner box dissipates the received heat to the base, so that a dry space is formed in the cavity of the base.

[0005] In some embodiments, a fixed back plate is arranged in the box body, the fixed back plate and the box body form the waste heat treatment cavity, and a through hole is arranged on the fixed back plate.

[0006] In some embodiments, the waste heat utilization assembly comprises a waste heat water box installed in the waste heat treatment cavity, a heat transfer connecting piece installed on the waste heat water box and a heat transfer plate fixed to the heat transfer connecting piece, and the heat transfer plate at least partially extends out through the through hole.

[0007] In some embodiments, two communication pipes are connected to the residual heat water box, and the pipes extend into the base and communicate with the drying inner box.

[0008] In some embodiments, a water pump is arranged on each of the communication pipes, one of the communication pipes is a pipe for the residual heat water box to deliver hot water to the drying inner box, and the other communication pipe is a pipe for the drying inner box to deliver cold water to the residual heat water box.

[0009] In some embodiments, the heat transfer connecting member comprises a heat transfer connecting plate fixed to the outer wall of the residual heat water box, an extended contact surface plate fixed to the free end of the heat transfer connecting plate, and heat transfer rib plates symmetrically arranged on both sides of the free end of the heat transfer connecting plate.

[0010] In some embodiments, the extended contact surface plate is fixedly attached to the outer wall of the heat transfer plate, and the heat transfer rib plates have an arc-shaped structure and are connected to the inner wall of the extended contact surface plate.

[0011] In some embodiments, the heat transfer plate, the extended contact surface plate, the heat transfer rib plate, the heat transfer connecting plate, the residual heat water box and the drying inner box are all made of aluminum material.

[0012] The inside of the box has two mounting frames arranged symmetrically, and a side cross beam is arranged between the opposite ends of the two mounting frames, and an extension mounting rack for extending the installation auxiliary device is detachably arranged on each side cross beam.

[0013] In some embodiments, the box is provided with a mounting frame for mounting electrical devices, and the mounting frame is provided with a side cross beam, and the side cross beam is detachably provided with an extension mounting rack.

[0014] A plurality of positioning insertion holes are arranged on the side cross beam.

[0015] The extension mounting rack comprises an extension hanging plate and a positioning insertion column arranged on the extension hanging plate, and the positioning insertion column is used for inserting into the positioning insertion hole to mount the extension mounting rack on the side cross beam.

[0016] In some embodiments, a longitudinal extension plate is fixedly arranged on the upper end surface of the extension hanging plate, and / or a transverse extension plate is fixedly arranged on the side plate of the extension hanging plate.

[0017] Compared with the prior art, the technical effects and advantages of the utility model are:

[0018] The assembled electrical control box, the traditional electrical control box usually relies on natural convection or fan forced cooling, which has low cooling efficiency in a closed space, and is prone to overheating of electrical devices, affecting their performance and service life. In addition, the traditional control box has no effective waste heat recycling measures, resulting in energy waste. The technical scheme introduces a waste heat treatment cavity and a waste heat utilization component, which can effectively collect the heat generated by electrical devices during operation and transfer it to the drying inner box in the base. This design not only improves the cooling efficiency, but also realizes the recycling of waste heat, reduces the demand for additional heating equipment, and reduces energy consumption. Through the cooperation of the water circulation system and the heat transfer plate, the technical scheme can ensure the stability of the internal temperature of the box without increasing external cooling equipment, prolonging the service life of the electrical devices. At the same time, the waste heat is used for drying treatment inside the base, preventing corrosion and other damage caused by moisture, improving the reliability and safety of the system.

[0019] The bottom of the traditional electrical control box is close to the ground and is easily affected by a humid environment, especially when it is in a humid environment for a long time, which may cause the electrical devices to be damp, short-circuited or even damaged. In order to solve this problem, it is usually necessary to install a dehumidifying device at the bottom of the control box or use waterproof materials, but these methods are high in cost and inconvenient to maintain. The technical scheme transfers the waste heat to the drying inner box in the base, and uses hot air circulation to maintain a dry environment inside the base. This design not only solves the problem of moisture at the bottom of the traditional control box, but also avoids the need for additional dehumidifying equipment, reducing cost and maintenance difficulty. Through the water circulation system of the waste heat water box and the water pump, heat is continuously transferred to the inside of the base, so that the base always maintains a dry state, effectively preventing corrosion and other damage caused by moisture, prolonging the overall service life of the control box.

[0020] The waste heat utilization component absorbs the heat generated by the electrical devices in the cavity of the box during operation, and transfers the heat to the drying inner box in the base through the water circulation system for drying treatment. This design not only realizes the effective recycling of waste heat, but also reduces the demand for additional heating equipment, reducing energy consumption. Through waste heat recycling, the technical scheme can achieve good cooling and drying effect without increasing external equipment, significantly reducing energy consumption, meeting the requirements of energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the assembled electrical control box of the utility model;

[0022] Figure 2 It is a structural schematic view of the assembled electrical control box of the utility model;

[0023] Figure 3 It is a structural schematic view of the side beam and the extension mounting rack of the utility model.

[0024] Figure 4 It is the exploded state structural schematic view of the waste heat utilization assembly of the utility model;

[0025] Figure 5 It is the waste heat utilization assembly of the utility model Figure 4 It is the enlarged structural schematic view of A place in the middle;

[0026] Figure 6 It is the base structure schematic view of the utility model. DETAILED DESCRIPTION

[0027] The utility model will be further described in detail below with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.

[0028] It should be noted that the terms "first", "second" and the like are used only for the purpose of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "fixation" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0031] In the above description, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples, without contradiction.

[0032] Unless the direction indicated by the definition is separately defined, the up, down, left, right, front, back, inside and outside and the like directions referred to herein are based on the up, down, left, right, front, back, inside and outside and the like directions in the drawings shown by the present application, which are described herein.

[0033] The present embodiment provides an assembled electrical control box as shown in Figures 1 to 6 The assembled electrical control box includes a control box assembly 1, which includes a box body 2 and a base 3 mounted on the bottom of the box body 2. The box body 2 is generally cuboid-shaped. The front side of the box body 2 is hingedly connected to a box door 4, which can be a single door or a double door. The inside of the box body 2 has a mounting frame 5 for mounting / carrying electrical devices. The mounting frame 5 can be assembled from several rod members. The rod members can have several connecting holes for facilitating the mounting of electrical devices on the mounting frame 5. The mounting frame 5 is fixedly arranged in the box body 2 and can be fixed by welding, screwing, clamping, etc. The mounting frame 5 can be provided with one or more mounting frames according to requirements. In the present embodiment, the mounting frame 5 is provided with two mounting frames, and the two mounting frames 5 are arranged in the box body 2 along the left-right direction.

[0034] As shown in Figure 2 and Figure 3 The side of the mounting frame 5 close to the side wall (left wall or right wall) of the box body is provided with a side beam 6, which extends along the front-rear direction, and the front-rear direction of the side beam 6 is connected to the rod members of the mounting frame 5. Specifically, the side beam 6 includes a first side plate 61 and a first top plate 62 connected to each other. The first top plate 62 is connected to the upper end of the first side plate 61 and located on the side of the first side plate 61 facing the inner side wall of the box body 2. The first side plate 61 and the first top plate 62 are in the shape of "L". The two ends of the first side plate 61 are provided with connecting holes 63 connected to the mounting frame 5. The first top plate 62 is provided with a plurality of positioning insertion holes 64 arranged along the length direction of the first top plate 62. The side beam 6 can be provided with one or more side beams, and a plurality of side beams 6 can be connected to the mounting frame 5 along the up-down direction.

[0035] As shown in Figure 2 andFigure 3 As shown, the side cross beam 6 is detachably provided with an extended mounting rack 7 for mounting electrical devices or auxiliary devices, the extended mounting rack 7 includes an extended hanging plate 71, a positioning plug column 72 and an extended plate, which are hung on the side cross beam 6 in an inverted manner. The extended hanging plate 71 includes a second top plate 75 and a second side plate 76 arranged in an "L" shape, the positioning plug column 72 is arranged at the lower end face of the second top plate 75, and the positioning plug column 72 is arranged in the same pitch as the positioning plug hole 64. During assembly, the positioning plug column 72 is aligned with the positioning plug hole 64, and then inserted into the positioning plug hole 64 from top to bottom, so as to hang the extended mounting rack 7 on the side cross beam 6. When assembled in place, the second side plate 76 abuts against the first side plate 61, the second top plate 75 abuts against the first top plate 62, and the positioning plug column 72 is plugged into the positioning plug hole 64. The extended plate is arranged on the extended hanging plate 71. Specifically, the extended plate can include a longitudinal extended plate 73 and a transverse extended plate 74. The longitudinal extended plate 73 is arranged at the upper end face of the second top plate 75 of the extended hanging plate 71, and the lower end of the longitudinal extended plate 73 can be fixed on the second top plate 75 by bolts. The longitudinal extended plate 73 extends in the up-down direction. The transverse extended plate 74 is arranged on the side of the second side plate 76 of the extended hanging plate 71 away from the first side plate 61. One end of the transverse extended plate 74 is connected to the second side plate 76 by bolts, and the transverse extended plate 74 extends in the left-right direction. The longitudinal extended plate 73 and the transverse extended plate 74 are used to carry electrical devices or auxiliary devices, forming a multifunctional extended mounting platform, which can be flexibly adjusted in size and direction according to needs to meet different installation requirements. The extended mounting rack 7 which is easy to install and disassemble can flexibly increase or adjust the position of additional equipment, improving the adaptability and expandability of the electrical control box.

[0036] As shown in Figure 2 and Figure 4 , the back of the mounting frame 5 and inside the back plate of the box body 2 is provided with a waste heat treatment cavity 11, and the inside of the waste heat treatment cavity 11 is provided with a waste heat utilization assembly 8. The waste heat utilization assembly 8 absorbs the heat generated by the electrical devices in the box body 2 and transmits it to the drying inner box 14 in the base 3. The drying inner box 14 dissipates the received heat to the base 3, forming a dry space in the cavity of the base 3 to prevent the lower part of the box body 2 from being damp due to being close to the ground. The base 3 not only supports the entire control box assembly 1, but also has a drying inner box 14 and other components built-in, which are used to absorb and dissipate the heat transmitted from the waste heat treatment cavity 11, thereby keeping the lower space of the box body 2 dry and preventing dampness caused by being close to the ground. The waste heat utilization assembly 8 is responsible for collecting waste heat generated by electrical devices during operation, and effectively transmitting these heat to the drying inner box 14, realizing the reuse of waste heat.

[0037] As shown in Figure 2 and Figure 4As shown, in this embodiment, the outer side of the residual heat treatment cavity 11 is enclosed by a fixed back plate 9, which can be fixedly connected with the box body 2 or the mounting frame 5, so as to form the residual heat treatment cavity 11 on the inner side of the box body; the fixed back plate 9 is provided with a through hole 91. The residual heat utilization assembly 8 comprises a residual heat water box 12 mounted in the residual heat treatment cavity 11, a heat transfer connecting piece 13 mounted on the outer wall of the residual heat water box 12, and a heat transfer plate 10 fixed on the heat transfer connecting piece 13, at least a part of the heat transfer plate 10 extends out through the through hole 91 of the fixed back plate 9. Specifically, the end of the heat transfer plate 10 away from the heat transfer connecting piece 13 extends through the fixed back plate 9 to the outside of the fixed back plate 9, so that the heat transfer plate 10 is in a convex structure on the fixed back plate 9, and the part of the heat transfer plate 10 passing through the through hole 91 is matched with the through hole 91, that is, just fills the through hole 91. The heat transfer plate 10 is the main heat conduction medium, which connects the residual heat water box 12 and abuts against / connects with the fixed back plate 9, so that heat can be transferred from the electrical device to the residual heat water box 12 through the heat transfer plate 10, or from the fixed back plate 9 to the heat transfer plate 10 and then to the residual heat water box 12, and then to the drying inner box 14 by the residual heat water box 12. The residual heat water box 12 is fixedly mounted in the residual heat treatment cavity 11, specifically, on the inner side of the back plate of the box body 2. The residual heat water box 12 stores water heated by absorbing heat, and forms a circulation system with the communicating pipes 15 and the water pumps 16 to bring heat to the drying inner box 14. The drying inner box 14 receives heat from the residual heat water box 12, and the heat is dissipated into the base 3, so that the inside of the base 3 is kept dry through the circulation of hot air, preventing corrosion, short circuit or other damage caused by moisture.

[0038] As shown, Figure 4 In this embodiment, the bottom end of the residual heat water box 12 is connected with two communicating pipes 15, and the end of each communicating pipe 15 away from the residual heat water box 12 extends into the base 3 and communicates with the drying inner box 14. Each communicating pipe 15 is provided with a water pump 16 at the end close to the drying inner box 14. One of the communicating pipes 15 is a pipeline for the residual heat water box 12 to deliver hot water to the drying inner box 14, and the other communicating pipe 15 is a pipeline for the drying inner box 14 to deliver cold water to the residual heat water box 12. The hot water in the residual heat water box 12 is delivered to the drying inner box 14, so that the drying inner box 14 dries the inner cavity of the base 3, and when the water in the drying inner box 14 becomes cold, it is delivered back to the residual heat water box 12 for heating, thereby forming a water circulation.

[0039] As shown, Figure 4 and Figure 5As shown, in the embodiment, the heat transfer connecting piece 13 can be provided with multiple, preferably two in the embodiment, each of which includes a heat transfer connecting plate 17 fixed to the outer wall of the residual heat water box 12, an extended contact surface plate 18 fixed to the free end of the heat transfer connecting plate 17, and a heat transfer rib plate 19 symmetrically fixed to the two sides of the free end of the heat transfer connecting plate 17. The connecting end of the heat transfer connecting plate 17 can be fixed on the residual heat water box 12 by welding, screwing, clamping connection and the like, and the heat transfer connecting plate 17 and the extended contact surface plate 18 are in the shape of “T”, and the extended contact surface plate 18 and the heat transfer connecting plate 17 can also be fixed by welding, screwing, clamping connection and the like.

[0040] In the embodiment, the extended contact surface plate 18 is fixedly attached to the outer wall of the heat transfer plate 10, and the heat transfer rib plate 19 is connected to the inner wall of the extended contact surface plate 18 in an arc shape. The design of the extended contact surface plate 18 is to increase the contact area with the heat transfer plate 10, so that the heat absorbed by the heat transfer plate 10 is quickly spread and transferred to the heat transfer connecting plate 17, and then transferred to the residual heat water box 12 through the heat transfer rib plate 19 and the heat transfer connecting plate 17.

[0041] In the embodiment, the heat transfer plate 10, the extended contact surface plate 18, the heat transfer rib plate 19, the heat transfer connecting plate 17, the residual heat water box 12 and the drying inner box 14 are all made of aluminum material. Aluminum has good thermal conductivity and can quickly transfer heat, thereby improving the thermal efficiency of the entire system. The heat transfer connecting plate 17, the extended contact surface plate 18 and the heat transfer rib plate 19 increase the heat transfer surface area and improve the conduction efficiency of heat from the electrical device to the drying inner box 14.

[0042] As shown in the figure, Figure 6 In the embodiment, the back of the base 3 is provided with a plug-in port 20 for plugging in the drying inner box 14, and the inner wall of one side of the base 3 is fixed with a support plate 21 for supporting and bearing the drying inner box 14, so that the drying inner box 14 is stably assembled in the base 3.

[0043] When the electrical device in the box 2 starts to work, a large amount of heat will be generated due to the current passing through resistors, inductors and other elements. These heat gradually accumulates inside the closed box 2, which may cause the electrical device to overheat, affecting its performance and service life. The heat generated by the electrical device is first absorbed by the air near the mounting frame 5 and the side beam 6, and then transferred to the residual heat treatment cavity 11 through heat conduction. The residual heat utilization assembly 8 in the residual heat treatment cavity 11 includes a residual heat water box 12, which is a water storage container. The residual heat water box 12 absorbs heat from the electrical device through the heat transfer plate 10, the heat transfer connecting plate 17, the extended contact surface plate 18 and the heat transfer rib plate 19, so that the water temperature rises. The fixed back plate 9 closes the residual heat treatment cavity 11, ensuring that the heat is concentrated in the residual heat water box 12, and preventing the heat from being directly lost to the environment.

[0044] When the water temperature in the residual heat water box 12 reaches the preset threshold, it is monitored by a temperature sensor (not shown in the figure), and the temperature sensor signal is transmitted to the PLC, which opens the water pump 16 to start, and pumps hot water through the connecting pipe 15 into the drying inner box 14. Two connecting pipes 15 are used to transport hot water and cold water respectively. One connecting pipe transports hot water in the residual heat water box 12 to the drying inner box 14, and the other transports cooled water back to the residual heat water box 12 for reheating, forming a closed water circulation system.

[0045] After the hot water enters the drying inner box 14, the heat is dissipated to the air in the base 3, causing the air temperature to rise, thereby accelerating the evaporation of moisture and maintaining a dry environment inside the base 3.

[0046] Through the continuous operation of the water pump 16, hot water is continuously transported from the residual heat water box 12 to the drying inner box 14, and after releasing heat in the drying inner box 14, it is cooled and monitored by a temperature sensor, and the temperature sensor signal is transmitted to the PLC, which opens the water pump 16 of the other connecting pipe 15, and the cold water returns to the residual heat water box 12 for reheating. This process not only realizes the effective utilization of residual heat, but also reduces additional energy consumption.

[0047] Through the feedback of the temperature sensor, the PLC control system can automatically adjust the working frequency of the water pump 16 to ensure the efficient operation of the water circulation system and avoid excessive heating or cooling. Through the coordinated work of the residual heat utilization assembly 8 and the water circulation system, the heat generated by the electrical devices is effectively transferred out to prevent overheating and prolong the service life of the electrical devices. The waste heat generated by the electrical devices is used to maintain the dryness inside the base 3, reducing the need for external heating equipment and reducing energy consumption, achieving energy saving and environmental protection. Through the circulation of hot air in the drying inner box 14, the dry environment inside the base 3 is maintained, preventing corrosion and other damage caused by moisture, improving the reliability and safety of the system.

[0048] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A modular electrical control box comprising a control box assembly, characterized in that: The control box assembly comprises a box body and a base mounted on the bottom of the box body, a waste heat treatment cavity is arranged in the box body, a waste heat utilization assembly is arranged in the waste heat treatment cavity, the waste heat utilization assembly absorbs heat generated by the electrical devices in the box body and then transfers the heat to a drying inner box in the base, and the drying inner box releases the received heat to the base to form a dry space in the base.

2. The assembled electrical control box according to claim 1, wherein: A fixed back plate is arranged in the box body, and the fixed back plate and the box body form the waste heat treatment cavity, and a through hole is arranged on the fixed back plate.

3. The assembled electrical control box according to claim 2, wherein, The waste heat utilization assembly comprises a waste heat water box mounted in the waste heat treatment cavity, a heat transfer connecting piece mounted on the waste heat water box, and a heat transfer plate fixed to the heat transfer connecting piece, and the heat transfer plate extends at least partially through the through hole.

4. The assembled electrical control box according to claim 3, characterized in that: Two communication pipes are connected to the waste heat water box, and the ends of the communication pipes away from the waste heat water box extend into the base and communicate with the drying inner box.

5. The assembled electrical control box of claim 4, wherein: Water pumps are arranged on each of the communication pipes, one of the communication pipes is a pipeline for the waste heat water box to supply hot water to the drying inner box, and the other communication pipe is a pipeline for the drying inner box to supply cold water to the waste heat water box.

6. The assembled electrical control box of claim 3, wherein: The heat transfer connecting piece comprises a heat transfer connecting plate fixed to the outer wall of the waste heat water box, an extended contact surface plate fixed to the free end of the heat transfer connecting plate, and heat transfer rib plates symmetrically arranged on both sides of the free end of the heat transfer connecting plate.

7. The assembled electrical control box of claim 6, wherein: The extended contact surface plate is fixed to the outer wall of the heat transfer plate, the heat transfer rib plates are in arc-shaped structure and are connected to the inner wall of the extended contact surface plate.

8. The assembled electrical control box of claim 7, wherein: The heat transfer plate, the extended contact surface plate, the heat transfer rib plate, the heat transfer connecting plate, the waste heat water box and the drying inner box are all made of aluminum material. The inside of the box body has two mounting frames arranged symmetrically, a side beam is arranged between the ends of the two mounting frames away from each other, and an extension mounting rack for extending the mounting auxiliary device is detachably arranged on each side beam.

9. The assembled electrical control box according to any one of claims 1-8, characterized in that: The box body is provided with a mounting frame for mounting electrical devices, a side beam is arranged on the mounting frame, and an extension mounting rack is detachably arranged on the side beam. A plurality of positioning insertion holes are arranged on the side beam. The extension mounting rack comprises an extension hanging plate and a positioning insertion column arranged on the extension hanging plate, and the positioning insertion column is used for inserting into the positioning insertion hole to mount the extension mounting rack on the side beam.

10. The assembled electrical control box of claim 9, wherein, A longitudinal extension plate is fixedly arranged on the upper end surface of the extension hanging plate, and / or a transverse extension plate is fixedly arranged on the side plate of the extension hanging plate.

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