Partition temperature sensing-based industrial large fan linkage temperature control device

Abstract

The application relates to the technical field of industrial ventilation and temperature control, and discloses an industrial large fan linkage temperature control device based on partition temperature sensing, which comprises a shell, a temperature control panel, a hanging bracket, a ventilation plate and a controller main body. An electromagnet is arranged at the lower end of the ventilation plate, both sides of the bottom of the shell are provided with through openings, hollow cylinders are connected to the through openings through rotating shafts, the hollow cylinders are provided with first air holes and second air holes, and the outer walls of the hollow cylinders are connected with elastic ropes. A guide groove is arranged at the bottom of the shell, a moving armature is arranged in the guide groove, the moving armature is connected with the hollow cylinders through connecting ropes, the on-off driving of the electromagnet drives the moving armature to move and drives the hollow cylinders to rotate, so that the air holes are corresponded with the through openings or staggered with the through openings, the opening and closing of the air inlet path of the shell are realized, a heat dissipation plate is arranged at the tail end of the shell above the ventilation plate, and the heat dissipation of the controller main body and the dust entry inhibition are considered.

Description

Technical Field

[0001] This invention relates to the field of industrial ventilation and temperature control technology, and in particular to an industrial large fan linkage temperature control device based on zoned temperature sensing. Background Technology

[0002] Industrial plants, warehouses, and large production sites are typically characterized by large spatial spans, dispersed equipment layouts, and independent work areas. Industrial large fans utilize large-diameter impellers to create wide-range air circulation, improving airflow and the thermal environment of work areas. With the development of industrial ventilation control technology, temperature sensing and control systems composed of temperature sensors, temperature controllers, and variable frequency drives are increasingly being adopted in workshops. Temperature sensors collect area temperatures, and temperature controllers send start / stop or speed adjustment signals to the industrial large fans according to the set temperature. The temperature and fan operating status are displayed on a control panel. For larger workshops, multiple sets of temperature sensors and multiple industrial large fans can be installed according to production areas to create zoned air circulation control.

[0003] The aforementioned and existing related technologies have the following drawbacks: Industrial large fan temperature control devices are installed in production workshops for extended periods. When the controller simultaneously drives multiple fan control channels, it continuously generates heat. Dust carried in the workshop air can easily enter the device through the heat dissipation points on the casing. If the casing remains highly sealed, the heat generated by the controller is difficult to dissipate in time; if the air inlet is continuously open, dust can easily enter the casing and adhere to the controller body. When using fixed filters for air intake filtration, the filters require cleaning after prolonged operation, making it difficult to simultaneously meet the requirements of on-demand air intake, air filtration, filter cleaning, and closing the air intake path during non-heat dissipation states. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology of industrial large fan temperature control device has the disadvantage that it is difficult to simultaneously take into account the needs of heat dissipation and air intake, air filtration and closing the air intake path when not dissipating heat in the dust workshop. To this end, we propose an industrial large fan linkage temperature control device based on zone temperature sensing.

[0005] To achieve the above objectives, this application adopts the following technical solution: an industrial large fan linkage temperature control device based on zoned temperature sensing, comprising a housing and a temperature control panel fixedly connected to the front end of the housing, a hanger rotatably connected to the top of the housing, a vent plate fixedly connected between the inner walls of the housing, a controller body fixedly connected to the top of the vent plate, an electromagnet fixedly connected to the middle of the lower end of the vent plate, and openings respectively on the bottom plates of the housing on both sides of the electromagnet. A rotating shaft is rotatably connected between the inner walls of the housing above the openings, and a hollow cylinder is fixedly connected to the outer wall of the rotating shaft. The hollow cylinder has a first air hole and a second air hole at a 90-degree angle. An elastic rope is fixedly connected to the outer wall of the hollow cylinder opposite to the first air hole. The other end of the elastic rope is fixedly connected to the inner wall of the shell. Two guide grooves are symmetrically opened about the electromagnet on the bottom plates of both ends of the shell between the hollow cylinders. A movable armature is movably engaged in the guide groove. A connecting rope is fixedly connected to the side wall of the movable armature. The other end of the connecting rope is fixedly connected to the outer wall of the hollow cylinder adjacent to the elastic rope. A heat dissipation plate is provided on the side wall of the tail end of the shell above the vent plate. One-way heat dissipation microholes are evenly opened on the heat dissipation plate.

[0006] Preferably, when the lower end of the hollow cylinder is movably attached to the inner wall of the inlet port and the elastic rope is in a normally relaxed state, the first air hole and the second air hole are located above the inlet port. At this time, the second air hole is located directly above the inlet port.

[0007] Preferably, when the elastic rope is in a normally relaxed state, the connecting rope is in a straight stretched state, at which time the movable armature is located at the farthest end of the guide groove from the electromagnet.

[0008] Preferably, rotating rings are movably sleeved on the outer walls of both ends of the rotating shaft inside the hollow cylinder. A counterweight rod is fixedly connected to the lower end of the rotating ring, and a counterweight filter screen is fixedly connected to the bottom of the counterweight rod. The two ends of the counterweight filter screen are arc-shaped and fit against the arc-shaped inner wall of the hollow cylinder.

[0009] Preferably, when the first air hole is located directly below the hollow cylinder and corresponds to the opening, the first air hole is located below the counterweight filter screen, and the second air hole is located above the counterweight filter screen. At this time, the movable armature is attracted and attached to the outer wall of the electromagnet.

[0010] Preferably, a fixing rod is fixedly connected to the outer wall of the rotating shaft between the rotating rings, and a long brush is fixedly connected to the end of the fixing rod, with the end of the long brush resting on the upper end of the counterweight filter screen.

[0011] Preferably, heat dissipation fins are fixedly connected to the rear sidewalls of the housing on both sides of the heat dissipation plate in an alternating manner. The heat dissipation fins form a temperature acquisition area and a fan control area on the rear sidewalls of the housing, respectively. Wiring holes are evenly spaced on the sidewalls of the temperature acquisition area and the fan control area, and an isolation cover is provided outside the wiring holes.

[0012] Preferably, the isolation cover includes a fixed cylinder fixedly connected to the side wall of the temperature acquisition area and the fan control area. The fixed cylinder surrounds the outside of the wiring hole. A notch is opened at the intersection of the top and side wall of the fixed cylinder. A sliding groove is opened on the side wall of the fixed cylinder below the notch. A slider is movably engaged in the sliding groove. A rotating cylinder is fixedly connected to the end of the slider. The rotating cylinder is adapted to the notch and is sleeved around the outside of the fixed cylinder. An annular groove is opened on the side wall of the fixed cylinder below the sliding groove. A coil spring is fixedly connected to the side wall of the annular groove. The outer end of the coil spring is fixedly connected to the inner wall of the rotating cylinder. A crescent hole is opened in the middle of the top of both the rotating cylinder and the fixed cylinder. A sealing gasket is also fixedly connected to the inner wall of the crescent hole. When the coil spring is in a normally relaxed state, the notch on the rotating cylinder and the fixed cylinder is closed.

[0013] Preferably, protective plates are provided on the side walls at both ends of the housing. The protective plates include a main board and V-shaped elastic rods fixedly connected to the upper and lower ends of the side wall at the end of the main board. The ends of the V-shaped elastic rods are fixedly connected to the outer wall of the temperature control panel. The extension plates at the upper and lower ends of the main board are engaged with the outer walls at the upper and lower ends of the housing. A limiting groove is opened in the middle of the main board. An elastic plate is fixedly connected to the inner wall of the limiting groove near the V-shaped elastic rod. The end of the elastic plate is inclined away from the housing.

[0014] Preferably, the controller body includes: The temperature acquisition module is used to receive the workshop area temperature information collected by the temperature sensors in each zone and transmit the area temperature information to the zone temperature control channel module. The zoned temperature control channel module is used to map the temperature sensors of each zone in the workshop to an independent temperature control channel, and to enable each temperature control channel to control one or more industrial fans in its area. The parameter setting module is used to set the start-up temperature, graded speed adjustment temperature, temperature difference between adjacent areas, and temperature difference to terminate the linkage for each temperature control channel. The display module is used to display the real-time temperature of each area in the workshop, the operating status of each temperature control channel, and the operating status of each industrial fan. The main control module is used to receive the zone temperature information and parameter setting information corresponding to each temperature control channel, and send control commands to the temperature difference analysis module, start-stop control module, graded speed regulation module, adjacent zone linkage control module and output drive module according to the zone temperature information. The temperature difference analysis module is used to obtain the real-time temperature and set temperature of each area, and to calculate the temperature difference between adjacent areas and the change status of the temperature difference. The start / stop control module is used to generate a fan start command when the real-time temperature of the area reaches the start-up temperature of the corresponding temperature control channel, and to maintain the current start / stop state of the corresponding industrial fan when the real-time temperature of the area does not reach the start-up temperature. The graded speed control module is used to control the speed of the industrial fan corresponding to the temperature control channel to change step by step according to the graded speed control temperature corresponding to the real-time temperature of the area after the industrial fan is started. The adjacent area linkage control module is used to control the industrial large fan in the adjacent area that is close to this area to enter auxiliary operation when the real-time temperature of this area reaches the linkage condition of the adjacent area, and to release the auxiliary operation when the temperature difference between this area and the adjacent area reaches the linkage exit temperature difference. The output drive module is used to receive control commands generated by the start-stop control module, the graded speed regulation module and the adjacent area linkage control module, and drive the industrial fans in this area and the auxiliary industrial fans in adjacent areas to perform start-stop and speed regulation respectively.

[0015] The technical effects and advantages of this invention are as follows: In this invention, a bottom air intake structure that can automatically switch between open and closed states is formed by an electromagnet, a movable armature, a connecting rope, a hollow cylinder, and an elastic rope. When the heat dissipation demand is high, the electromagnet drives the movable armature to pull the hollow cylinder to rotate, so that the first air hole aligns with the opening. When the industrial fan blows the air in the workshop to accelerate the flow, a negative pressure is formed at the heat dissipation plate to draw in the air. After the external air is filtered by the counterweight filter, it enters the shell. When the heat dissipation demand decreases, the elastic rope drives the hollow cylinder to reset and reseal the opening, thereby reducing the amount of dust entering the shell when not dissipating heat. This not only achieves automatic adjustment during ventilation and heat dissipation but also ensures the sealing safety of the device when not in operation.

[0016] In terms of temperature control, each temperature control channel of the controller body forms a corresponding relationship between the main control fan group and the auxiliary fans in the adjacent area. When the temperature in this area rises, the operating level of the industrial fan in this area is increased first. Only when the temperature continues to rise after the fan in this area reaches the set operating level, and the temperature difference between this area and the adjacent area continuously reaches the linkage condition, will the industrial fan in the adjacent area near the boundary of this area be called for auxiliary operation. After the temperature difference between the areas recovers, the auxiliary operation of the adjacent area is first deactivated, and then the speed of the industrial fan in this area is reduced. This avoids the frequent activation of the fans in the adjacent area based on a single temperature exceedance, so that the air circulation capacity is prioritized for the high temperature area and the interference with the normal air circulation state of the adjacent area is reduced. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 2This is a rear view schematic diagram of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 3 This is a schematic cross-sectional view of the housing of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 4 This invention relates to an industrial large fan linkage temperature control device based on zoned temperature sensing. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the isolation cover structure of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 6 This is a schematic diagram of the assembly structure of an isolation cover for an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 7 This is a schematic diagram of the main architecture of the controller of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention. Figure 8 This is a schematic diagram of the main operating logic of the controller of an industrial large fan linkage temperature control device based on zoned temperature sensing according to the present invention.

[0018] In the diagram: 1. Shell; 11. Opening; 12. Shaft; 13. Hollow cylinder; 131. First air vent; 132. Second air vent; 133. Rotating ring; 134. Counterweight rod; 135. Counterweight filter; 136. Fixing rod; 137. Long brush; 14. Elastic rope; 15. Guide groove; 16. Moving armature; 17. Connecting rope; 18. Heat sink; 2. Temperature control panel; 3. Hanger; 4. Ventilation plate; 41. 5. Electromagnet; 6. Controller body; 7. Heat sink fins; 8. Temperature acquisition area; 9. Fan control area; 10. Wiring hole; 11. Isolation cover; 12. Fixing cylinder; 13. Notch; 24. Slide groove; 25. Sliding block; 36. Rotating cylinder; 47. Annular groove; 58. Coil spring; 69. Crescent hole; 70. Sealing gasket; 81. Protective plate; 92. Main board; 93. V-shaped spring bar; 94. Limiting groove; 95. Elastic plate. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] Reference Figures 1-6As shown, this invention provides a technical solution: an industrial large fan linkage temperature control device based on zoned temperature sensing, including a housing 1 and a temperature control panel 2 fixedly connected to the front end of the housing 1. The temperature control panel 2 is used for operators to view the device's operating information and perform corresponding operations. A hanger 3 is rotatably connected to the top of the housing 1. The hanger 3 is used to install the entire temperature control device on a workshop wall, column, or corresponding supporting component. The housing 1 can rotate relative to the hanger 3, thereby adjusting the orientation of the temperature control panel 2 according to the installation position, facilitating on-site observation and operation.

[0021] A vent plate 4 is fixedly connected between the inner wall of the housing 1. The vent plate 4 is arranged laterally inside the housing 1, dividing the interior of the housing 1 into a controller installation space above the vent plate 4 and an air conditioning space below the vent plate 4. The vent plate 4 itself has a ventilated structure for air to pass through. The controller body 5 is fixedly installed on the upper end of the vent plate 4, so that the air entering from the bottom of the housing 1 can flow upward through the vent plate 4 and through the space where the controller body 5 is located, so as to remove the heat generated by the controller body 5 during operation. An electromagnet 41 is fixedly connected to the middle of the lower end of the vent plate 4. The electromagnet 41 is connected in series with the controller body 5. When the device is powered on, the controller body 5 and the electromagnet 41 are powered on synchronously, and vice versa. The electromagnet 41 is arranged at the middle position of the bottom of the housing 1. Openings 11 are respectively opened on the bottom plate of the housing 1 on the left and right sides of the electromagnet 41. The two openings 11 constitute the controllable air intake positions on both sides of the bottom of the housing 1.

[0022] A rotating shaft 12 is installed above each opening 11. The two ends of the rotating shaft 12 are rotatably connected between the opposite inner walls of the housing 1. A hollow cylinder 13 is fixedly connected to the outer wall of the rotating shaft 12, so that the hollow cylinder 13 can rotate synchronously with the rotating shaft 12 inside the housing 1. A first air hole 131 and a second air hole 132 are respectively opened on the side wall of the hollow cylinder 13. The first air hole 131 and the second air hole 132 are set at a 90-degree interval along the circumference of the hollow cylinder 13. An elastic rope 14 is fixedly connected to the outer wall of the hollow cylinder 13 on the side opposite to the first air hole 131. The other end of the elastic rope 14 is fixedly connected to the inner wall of the housing 1. On both sides of the electromagnet 41 and located in the two hollow cylinders Guide grooves 15 are respectively provided on the bottom plate of the shell 1 between 13. The two guide grooves 15 are symmetrically arranged about the electromagnet 41. A movable armature 16 is movably engaged inside each guide groove 15. The movable armature 16 can move toward or away from the electromagnet 41 in the direction defined by the guide groove 15. A connecting rope 17 is fixedly connected to the side wall of the movable armature 16. The other end of the connecting rope 17 is fixedly connected to the outer wall of the corresponding hollow cylinder 13 and is located adjacent to the connection position of the elastic rope 14. When the movable armature 16 moves in the guide groove 15, it can apply a traction force to the hollow cylinder 13 through the connecting rope 17, so that the hollow cylinder 13 rotates around the rotating shaft 12.

[0023] When the temperature control device is in normal operation and the electromagnet 41 is not energized, the elastic rope 14 remains in a normally relaxed state. The first vent 131 and the second vent 132 are both located above the port of the inlet 11, with the second vent 132 located directly above the inlet 11. However, the lower end of the hollow cylinder 13 is still in contact with the inner wall of the port of the inlet 11, so that no direct air intake path is formed between the inlet 11 and the hollow cylinder 13. At the same time, when the elastic rope 14 remains in a normally relaxed state, the connecting rope 17 is in a straight stretched state, and the movable armature 16 is located at the end of the guide groove 15 furthest from the electromagnet 41. At this time, the hollow cylinder 13 remains in a closed posture under the constraint of the elastic rope 14, which can reduce the probability of external dust entering the interior through the bottom of the housing 1 when the temperature control device does not need enhanced heat dissipation.

[0024] When the controller body 5 needs to enhance internal air circulation, the electromagnet 41 is energized to generate magnetic attraction, and the two movable armatures 16 move along the guide groove 15 toward the electromagnet 41. During the movement of the movable armatures 16, the connecting rope 17 is pulled simultaneously, and the connecting rope 17 pulls the corresponding hollow cylinder 13 to rotate around the rotating shaft 12. At the same time, the elastic rope 14 is stretched. After the hollow cylinder 13 rotates to the air intake position, the first air hole 131 rotates to the bottom of the hollow cylinder 13 and corresponds to the opening 11 at the bottom of the housing 1, so that external air can enter the interior of the hollow cylinder 13 through the opening 11 and the first air hole 131. At this time, the movable armatures 16 move to a position close to the electromagnet 41 and are attracted to the outer wall of the electromagnet 41, so that the hollow cylinder 13 can stably maintain the current air intake posture.

[0025] Reference Figure 4 As shown, rotating rings 133 are movably sleeved on the outer walls of both ends of the rotating shaft 12 inside the hollow cylinder 13. The rotating rings 133 can rotate freely relative to the rotating shaft 12. The lower ends of the two rotating rings 133 are fixedly connected to counterweight rods 134. The bottom ends of the counterweight rods 134 are fixedly connected to a counterweight filter screen 135. The counterweight filter screen 135 is horizontally arranged inside the hollow cylinder 13. The two ends of the counterweight filter screen 135 have an arc-shaped structure that matches the arc-shaped inner wall of the hollow cylinder 13 and is set close to the inner wall of the hollow cylinder 13. Since the rotating rings 133 can rotate relative to the rotating shaft 12, the counterweight rods 134 and the counterweight filter screen 135 are subjected to their own gravity. When the hollow cylinder 13 rotates, the counterweight filter screen 135 can still maintain the filtering posture below the rotating shaft 12.

[0026] When the first air hole 131 rotates to be directly below the hollow cylinder 13 and corresponds to the opening 11, the first air hole 131 is located below the counterweight filter 135, and the second air hole 132 is located above the counterweight filter 135. Therefore, the external air entering through the opening 11 first enters the lower space of the hollow cylinder 13 through the first air hole 131, then passes upward through the counterweight filter 135, and then exits the hollow cylinder 13 through the second air hole 132, entering the air conditioning space below the vent plate 4. Through the above air flow relationship, the air entering the interior of the housing 1 must first pass through the counterweight filter 135 for filtration. The dust carried in the workshop air is blocked on the surface of the counterweight filter 135. The filtered air then passes through the vent plate 4 and enters the space where the controller body 5 is located.

[0027] In order to reduce the impact of dust accumulation on the counterweight filter 135 after long-term use, a fixing rod 136 is fixedly connected to the outer wall of the rotating shaft 12 between the two rotating rings 133. A long brush 137 is fixedly connected to the end of the fixing rod 136, and the end of the long brush 137 rests on the upper surface of the counterweight filter 135.

[0028] When the hollow cylinder 13 is switched on or off, the rotating shaft 12 rotates synchronously with the hollow cylinder 13, and the fixed rod 136 and the long brush 137 move with the rotating shaft 12. The counterweight filter 135 maintains a downward filtering posture under the gravity of the counterweight rod 134. Therefore, there is relative movement between the long brush 137 and the counterweight filter 135. The long brush 137 sweeps along the surface of the counterweight filter 135, pushing the dust adhering to the surface of the counterweight filter 135 to the side. In other words, this structure does not require a separate filter cleaning motor. The surface cleaning of the counterweight filter 135 is completed synchronously during the rotation process of the hollow cylinder 13 switching the air intake state. When the enhanced heat dissipation requirement is relieved, the electromagnet 41 is de-energized, the moving armature 16 separates from the electromagnet 41, and the elastic rope 14, which was previously in a stretched state, releases its elastic potential energy and pulls the hollow cylinder 13 to rotate in the opposite direction. During the reset process of the hollow cylinder 13, the moving armature 16 is simultaneously driven away from the electromagnet 41 along the guide groove 15 via the connecting rope 17.

[0029] After the hollow cylinder 13 returns to its initial position, its lower end re-adheres to the port 11, closing the bottom air intake path. During this reverse rotation, the long-bristled brush 137 sweeps relative to the counterweight filter 135 again. Therefore, when the hollow cylinder 13 completes a full cycle from closed to open and then from open to closed, the counterweight filter 135 can be cleaned in both rotation processes.

[0030] A heat dissipation plate 18 is provided on the side wall of the tail end of the housing 1 above the vent plate 4. The heat dissipation plate 18 is evenly provided with one-way heat dissipation micro-holes. The air entering from the bottom of the housing 1 and flowing through the controller body 5 absorbs the heat generated by the controller body 5 and flows to the tail end of the housing 1. It is then discharged outward through the one-way heat dissipation micro-holes on the heat dissipation plate 18, thus forming an airflow path that enters from the bottom opening 11 of the housing 1, goes upward through the hollow cylinder 13 and the vent plate 4, passes through the controller body 5, and is discharged outward through the heat dissipation plate 18. The one-way heat dissipation micro-holes are set in a direction that allows the air inside the housing 1 to be discharged outward and restricts the reverse entry of external dusty air, so that the temperature control device can still release the internal residual heat through the heat dissipation plate 18 after the bottom opening 11 is closed.

[0031] Reference Figure 2 As shown, heat dissipation fins 6 are fixedly and interlaced on the sidewalls of the rear end of the housing 1 on both sides of the heat dissipation plate 18. The heat dissipation fins 6 can increase the heat dissipation area between the housing 1 and the outside air, and at the same time, the space of the heat dissipation fins 6 is used to form a temperature acquisition area 61 and a fan control area 62. The temperature acquisition area 61 and the fan control area 62 are located on both sides of the heat dissipation plate 18, respectively. The temperature acquisition area 61 is used for the temperature sensing part of each area of ​​the workshop, and the fan control area 62 is used for the control part of the industrial fan in each area, so that the two types of functional areas are distinguished from each other at the rear end of the temperature control device.

[0032] Wiring holes 7 are evenly spaced on the side walls of the temperature acquisition area 61 and the fan control area 62, and an isolation cover 8 is provided on the outside of each wiring hole 7.

[0033] Reference Figure 5 and Figure 6 As shown, the isolation cover 8 includes a fixing cylinder 81, which is fixedly connected to the corresponding side walls of the temperature acquisition area 61 and the fan control area 62, and is arranged around the wiring hole 7.

[0034] A notch 811 is provided at the intersection of the top and side wall of the fixed cylinder 81. A groove 82 is provided on the side wall of the fixed cylinder 81 below the notch 811. A slider 83 is movably engaged inside the groove 82. The end of the slider 83 is fixedly connected to a rotating cylinder 84. The rotating cylinder 84 is sleeved around the outside of the fixed cylinder 81 and can rotate relative to the fixed cylinder 81 under the constraint of the slider 83 and the groove 82. An annular groove 85 is provided on the side wall of the fixed cylinder 81 below the groove 82. A coil spring 86 is provided in the annular groove 85. One end of the coil spring 86 is fixed to the side wall of the annular groove 85, and the other end is fixed to the inner wall of the rotating cylinder 84. When the rotating cylinder 84 rotates relative to the fixed cylinder 81, the coil spring 86 undergoes elastic deformation. Half-moon holes 87 are respectively provided in the middle of the top of the rotating cylinder 84 and the fixed cylinder 81. A sealing gasket 88 is fixedly connected to the inner wall of the half-moon hole 87.

[0035] During operation, the rotating drum 84 can be rotated to bring the corresponding opening into the operating position. The operator can insert or remove wires through the notch 811. After the operation is completed, the force on the rotating drum 84 is released, the coil spring 86 releases its elastic potential energy and pushes the rotating drum 84 to automatically reset. When the coil spring 86 is in the normal relaxed state, the notch 811 corresponding to the rotating drum 84 and the fixed drum 81 is in the closed state, and the two crescent holes 87 cooperate to form a corresponding channel. At the same time, the sealing gasket 88 is attached to the outer periphery of the passage position, thereby reducing the probability of dust entering the temperature control device through this position. At the same time, after the rotating drum 84 and the fixed drum 81 are closed, the crescent holes 87 restrict the guide connector of the insertion terminal 7, preventing accidental pulling that could cause the wire plug to loosen, thus ensuring the stability of the equipment.

[0036] Reference Figure 1 and Figure 2 As shown, protective plates 9 are respectively provided on the side walls of both ends of the housing 1. The protective plates 9 include a main board 91. V-shaped elastic rods 92 are fixedly connected to the upper and lower sides of the end of the main board 91 facing the temperature control panel 2. The other end of the V-shaped elastic rods 92 is fixedly connected to the outer wall of the temperature control panel 2. Extensions are provided at the upper and lower ends of the main board 91. The extensions are engaged with the outer walls of the upper and lower ends of the housing 1, so that the main board 91 can maintain a limited position along the side of the housing 1. A limiting groove 93 is opened in the middle of the main board 91. An elastic plate 94 is fixedly connected to the inner wall of the limiting groove 93 near the V-shaped elastic rod 92. The end of the elastic plate 94 is inclined away from the housing 1.

[0037] When workshop tools, transported items, or adjacent equipment first collide with the protective plate 9, the external force acts on the main board 91, and the V-shaped elastic rod 92 undergoes elastic deformation, absorbing the first stage of impact energy. After the main board 91 continues to move towards the housing 1, the elastic plate 94 gradually comes into contact with the outer wall of the housing 1 and further undergoes elastic deformation, forming a second stage of buffer by the elastic plate 94. At the same time, the limiting groove 93 restricts the movement range of the main board 91. After the external collision effect disappears, the V-shaped elastic rod 92 and the elastic plate 94 return to their initial state and push the main board 91 to reset, thereby reducing the impact of the lateral collision directly transmitted to the housing 1 and the temperature control panel 2.

[0038] Reference Figure 7 As shown, the controller body 5 includes a temperature acquisition module, a zoned temperature control channel module, a parameter setting module, a display module, a main control module, a temperature difference analysis module, a start / stop control module, a graded speed regulation module, an adjacent area linkage control module, and an output drive module.

[0039] The temperature acquisition module is used to receive the regional temperature information collected by the zone temperature sensors deployed in different areas of the workshop, generate corresponding temperature data according to different areas, and then transmit the regional temperature information to the zone temperature control channel module.

[0040] In practical use, the workshop is divided into zones A, B, C, and D according to the main airflow coverage area of ​​the industrial fans, and each zone is equipped with a zone temperature sensor. The specific number of zone temperature sensors can be determined based on the area of ​​the corresponding zone. When multiple temperature measurement points are set in a zone, the temperature acquisition module can use the arithmetic mean of the values ​​collected from multiple temperature measurement points as the current zone temperature.

[0041] The zoned temperature control channel module is used to map each zone's temperature sensor to an independent temperature control channel, and to enable each temperature control channel to control one or more industrial fans in its zone.

[0042] For example, if area A is relatively large, and three large industrial fans A1, A2, and A3 are installed in area A, then the temperature sensor in area A corresponds to temperature control channel 1, and temperature control channel 1 corresponds to A1, A2, and A3. If one large industrial fan B1 is installed in area B, then the temperature sensor in area B corresponds to temperature control channel 2, and temperature control channel 2 corresponds to B1.

[0043] The zoned temperature control channel module also stores the correspondence between adjacent areas. Specifically, the adjacency relationship is determined according to the actual spatial location of each area in the workshop. For example, if area A and area B share a common boundary, then area A and area B are adjacent areas.

[0044] Each temperature control channel is further divided into a main control fan group and an auxiliary fan group in the adjacent area.

[0045] The main control fan group consists of all the large industrial fans in this area that are directly controlled by the temperature control channel. For example, the main control fan group in area A includes A1, A2, and A3.

[0046] The neighboring auxiliary fan group does not include all industrial fans in the adjacent area, but records the industrial fans in the adjacent area that are closest to the common boundary of the current area.

[0047] For example, if area A is adjacent to area B, and B1 is located in area B and close to the common boundary between area A and area B, then B1 is registered as a neighboring auxiliary fan that can be called by area A.

[0048] When there are multiple industrial fans in an adjacent area, the industrial fan with the smallest distance from the common boundary is selected as the priority neighboring auxiliary fan for the corresponding area, based on the distance between the installation location of each industrial fan and the common boundary.

[0049] The parameter setting module is used to set the start-up temperature, graded speed adjustment temperature, temperature difference between adjacent zones, and temperature difference to exit linkage for each temperature control channel.

[0050] This implementation method illustrates the control process using a set of specific parameters. The start-up temperature is set to 29°C, the first-stage speed regulation temperature is set to 30°C, and the second-stage speed regulation temperature is set to 31°C, corresponding to first-level, second-level, and third-level operating states.

[0051] In Level 1 operation, the industrial fan operates at 35% of its rated speed; in Level 2 operation, it operates at 55% of its rated speed; and in Level 3 operation, it operates at 75% of its rated speed.

[0052] The temperature difference between adjacent areas is set to 2℃, and the temperature difference when the linkage is terminated is set to 0.8℃.

[0053] All of the above parameters can be reset according to the actual workshop environment through the parameter setting module. During operation, the parameter setting module provides the main control module with the control parameters currently used for the corresponding channel.

[0054] The display module is used to display the real-time temperature of each area in the workshop, the operating status of each temperature control channel, and the operating status of each industrial fan.

[0055] The display area on the temperature control panel 2 can display the current real-time temperature of zones A, B, C and D respectively, and at the same time show whether the corresponding fan is stopped, running at level one, running at level two, running at level three or running in the adjacent zone, so that the operator can directly view the operation status of each zone.

[0056] The main control module is used to receive the zone temperature information and parameter setting information corresponding to each temperature control channel, and send control commands to the temperature difference analysis module, start-stop control module, graded speed regulation module, adjacent zone linkage control module and output drive module according to the zone temperature information.

[0057] The main control module continuously processes the temperature of each region according to a set sampling period. In this embodiment, the sampling period is set to 5 seconds, that is, the temperature of different regions and the temperature difference between different regions are updated every 5 seconds.

[0058] The temperature difference analysis module is used to obtain the real-time temperature and set temperature of each area, and to calculate the temperature difference between adjacent areas and the temperature difference change status.

[0059] Taking areas A and B as examples, let T be the real-time temperature of area A during the current sampling period. A Record the real-time temperature of zone B as T. B Then the temperature difference between region A and region B is: ΔT AB =T A -T B .

[0060] The temperature difference analysis module not only determines the current ΔT AB Whether the temperature difference between adjacent areas is reached, the temperature difference values ​​of multiple consecutive sampling cycles are also saved according to the sampling order.

[0061] When ΔT is satisfied for three consecutive sampling periods ABNot less than 2℃, and ΔT in the next sampling period AB ΔT greater than the previous sampling period AB At that time, it was determined that the temperature difference between area A and area B was continuously increasing.

[0062] Conversely, when ΔT AB After the temperature gradually decreases and reaches below 0.8℃, the temperature difference analysis module continues to monitor for multiple consecutive sampling cycles to confirm whether the regional temperature difference has stabilized and recovered.

[0063] The start / stop control module generates a fan start command when the real-time temperature of the area reaches the start-up temperature of the corresponding temperature control channel, and maintains the current start / stop state of the corresponding industrial fan when the real-time temperature of the area does not reach the start-up temperature.

[0064] Taking area A as an example, when T A When the temperature reaches 29℃, the start-stop control module first starts A1, A2 and A3, and the main control fan group in zone A enters the first-level operation state.

[0065] During this phase, only the industrial fans in Zone A are used, and the fans in Zone B are not used.

[0066] The graded speed control module is used to control the speed of the industrial fan corresponding to the temperature control channel to change step by step according to the graded speed control temperature corresponding to the real-time temperature of the area after the industrial fan in this area is started.

[0067] After the temperature in Zone A reaches 30℃, A1, A2, and A3 are upgraded from Level 1 to Level 2 operation; after the temperature in Zone A continues to reach 31℃, A1, A2, and A3 are upgraded to Level 3 operation.

[0068] Therefore, the airflow in the area is improved by utilizing the adjustment capabilities of the main fan group in this area, rather than immediately activating the fans in adjacent areas when a temperature change occurs in this area.

[0069] The adjacent area linkage control module is used to control the industrial large fan in the adjacent area that is close to this area to enter auxiliary operation when the real-time temperature of this area reaches the linkage condition of the adjacent area, and to release the auxiliary operation when the temperature difference between this area and the adjacent area reaches the linkage exit temperature difference.

[0070] In this embodiment, the linkage between adjacent areas is not directly triggered based on a temperature difference exceeding a threshold, but rather follows the sequence of "local area priority - local area enhancement - continuous temperature rise - continuous increase in temperature difference - neighboring area assistance".

[0071] Specifically, when the main control fan group in Zone A reaches the third-level operating state, the main control module continues to monitor the temperature in Zone A.

[0072] If the temperature in Zone A continues to rise after the main control fan group in Zone A has been running at level 3 for 30 seconds, and the temperature difference between Zone A and Zone B reaches 2°C for three consecutive sampling cycles, with the temperature difference increasing sequentially in the three sampling cycles, then the adjacent area linkage control module determines that Zone A has not yet stabilized its temperature change by relying solely on its own main control fan group.

[0073] At this time, the adjacent area linkage control module reads B1 from the auxiliary fan group of the adjacent area corresponding to area A.

[0074] Before calling B1, the adjacent area linkage control module first checks the temperature status of area B itself.

[0075] When the temperature in zone B is lower than the secondary speed regulation temperature in zone B, it indicates that zone B still has a margin of operation that allows zone A to operate in an auxiliary manner, and B1 enters the auxiliary operation state of zone A.

[0076] If B1 is currently in a stopped state or in a first-level operating state, then B1 will be upgraded to a second-level operating state to enhance air exchange near the boundary between area A and area B.

[0077] If B1 is already operating at a temperature no lower than Level 2 according to its own temperature control channel requirements, then B1 will maintain its current higher operating state and will not reduce its speed due to the call from Zone A.

[0078] When zone B has reached the temperature required for level 3 operation, the adjacent zone linkage control module will no longer use B1 as an auxiliary fan that zone A can call upon, so as to avoid reducing the operating priority of zone B itself in order to improve air circulation in zone A.

[0079] For a temperature control area that has two adjacent areas, the adjacent area linkage control module selects the auxiliary area based on the current temperature status of the two adjacent areas.

[0080] Specifically, the temperature margin of adjacent areas can be calculated. The temperature margin is the secondary speed regulation temperature of the adjacent area minus the real-time temperature of the adjacent area.

[0081] Adjacent areas with a large temperature margin are prioritized as available areas, and then industrial large fans that are close to the common boundary of the current high-temperature area are selected as auxiliary fans from these adjacent areas.

[0082] This method clearly determines "which adjacent area to call" and "which industrial fan in the adjacent area to call".

[0083] After the auxiliary fan in the neighboring area is started, the temperature difference analysis module continues to calculate the regional temperature difference between the current high-temperature area and the auxiliary area.

[0084] As long as the regional temperature difference remains higher than the temperature difference at which the linkage is disengaged, or if the regional temperature difference continues to increase, the adjacent regional linkage control module will continue to maintain auxiliary operation of the adjacent region.

[0085] When the temperature difference between area A and area B drops below 0.8℃, the B1 auxiliary state is not immediately terminated, but monitoring continues for four sampling cycles.

[0086] Only when the temperature difference between the regions for four consecutive sampling periods is no greater than 0.8℃, and the temperature of region A itself no longer continues to rise, can it be determined that the temperature difference between region A and region B has reached a stable recovery state.

[0087] At this time, the adjacent area linkage control module first deactivates the A-zone auxiliary operation status of B1.

[0088] After B1 exits auxiliary operation in zone A, it does not stop directly, but resumes operation according to the temperature control results of zone B's own temperature control channel.

[0089] If the temperature in zone B is lower than the start-up temperature, B1 will stop; if zone B is within the first-level operating temperature range, B1 will resume first-level operation; if zone B still requires second-level operation, B1 will continue to maintain second-level operation.

[0090] This allows control to smoothly return to the original area after the auxiliary fan in the neighboring area is deactivated.

[0091] After the auxiliary fan in the neighboring area is deactivated, the main control fan group in this area does not immediately reduce its speed.

[0092] The main control module continues to set a stable observation period. In this embodiment, the stable observation period is 30 seconds.

[0093] After the observation period ends, when the temperature in area A is lower than the second-level speed regulation temperature of 31℃ for three consecutive sampling cycles, the speed regulation module will reduce A1, A2 and A3 from level three to level two.

[0094] When the temperature in area A continues to decrease and remains below the first-level speed regulation temperature by 30°C for three consecutive sampling cycles, A1, A2, and A3 will be downgraded from level two to level one.

[0095] After the temperature in area A further decreases to below the start-up temperature of 29°C and remains there for three sampling cycles, the start-stop control module controls A1, A2, and A3 to stop operating.

[0096] Therefore, the entire control process forms a clear sequence: the main control fan in this area is started first, the main control fan in this area is gradually strengthened, it is determined whether the temperature in this area continues to rise after the strengthening, it is determined whether the temperature difference with the adjacent area continues to increase, the boundary fan of the neighboring area is called in a targeted manner, the temperature difference in the area is restored, the auxiliary fan of the neighboring area is withdrawn first, and the main control fan in this area is then gradually reduced in speed.

[0097] The output drive module is used to receive control commands generated by the start-stop control module, the graded speed regulation module, and the adjacent area linkage control module, and to drive the industrial fans in this area and the auxiliary industrial fans in adjacent areas to perform start-stop and speed regulation respectively.

[0098] The output drive module outputs operating commands to the frequency converter control terminal of the corresponding industrial large fan according to the target operating state determined by the main control module, so that one temperature control channel can control one or more industrial large fans in the area at the same time, and add auxiliary control commands to the auxiliary fans in the corresponding neighboring area when the linkage conditions of adjacent areas are met.

[0099] Throughout the entire operation of the controller body 5, temperature sensors in each area continuously collect the area temperature, the temperature acquisition module continuously updates the temperature information, the zone temperature control channel module maintains the correspondence between the area and the fan group, the temperature difference analysis module continuously updates the temperature difference between adjacent areas, and the main control module executes control in a cyclical manner according to the sequence of start / stop, graded speed adjustment, neighbor zone assistance, and exit.

[0100] When any area's main control fan group enters the third-level operation state or the adjacent area linkage control module enters the neighboring area auxiliary state, the controller body 5 simultaneously controls the electromagnet 41 to be energized, so that the air intake path at the bottom of the housing 1 is opened, thereby enhancing the ventilation and heat dissipation of the controller body 5.

[0101] When all temperature control channels exit Level 3 operation and the auxiliary states of adjacent areas are all deactivated, the electromagnet 41 is de-energized, the elastic rope 14 drives the hollow cylinder 13 to reset and close the port 11, and at the same time the long brush 137 completes the re-sweeping of the counterweight filter 135.

[0102] Thus, the physical heat dissipation structure of the temperature control device and the zoned temperature control logic work together: when the industrial fan's control load increases, the temperature control device's own heat dissipation is enhanced simultaneously; when the control load decreases, the bottom air intake path is closed. At the same time, through zoned temperature sensing and judgment of continuous changes in temperature difference between adjacent areas, the industrial fan mainly undertakes the functions of workshop air circulation and inter-zone air exchange, adjusting the air circulation capacity according to the actual thermal state of different areas, realizing priority for the local area, on-demand assistance for neighboring areas, and orderly withdrawal after the temperature difference recovers.

[0103] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An industrial large fan linkage temperature control device based on zoned temperature sensing, characterized in that, The device includes a housing and a temperature control panel fixedly connected to the front end of the housing. A hanger is rotatably connected to the top of the housing. A vent plate is fixedly connected to the inner wall of the housing. A controller body is fixedly connected to the top of the vent plate. An electromagnet is fixedly connected to the middle of the lower end of the vent plate. Openings are respectively provided on the bottom plates of the housing on both sides of the electromagnet. A rotating shaft is rotatably connected to the inner wall of the housing above the openings. A hollow cylinder is fixedly connected to the outer wall of the rotating shaft. A first air hole and a second air hole are respectively opened at 90-degree angles on the side wall of the hollow cylinder. An elastic rope is fixedly connected to the outer wall of the hollow cylinder opposite the first air hole. The other end of the elastic rope is fixedly connected to the inner wall of the shell. Two guide grooves are symmetrically opened on the bottom plates of both ends of the shell between the hollow cylinders about the electromagnet. A movable armature is movably engaged in the guide groove. A connecting rope is fixedly connected to the side wall of the movable armature. The other end of the connecting rope is fixedly connected to the outer wall of the hollow cylinder adjacent to the elastic rope. A heat dissipation plate is provided on the side wall of the tail end of the shell above the vent plate. One-way heat dissipation microholes are evenly opened on the heat dissipation plate. The controller body includes: The temperature acquisition module is used to receive the workshop area temperature information collected by the temperature sensors in each zone and transmit the area temperature information to the zone temperature control channel module. The zoned temperature control channel module is used to map the temperature sensors of each zone in the workshop to an independent temperature control channel, and to enable each temperature control channel to control one or more industrial fans in its area. The parameter setting module is used to set the start-up temperature, graded speed adjustment temperature, temperature difference between adjacent areas, and temperature difference to terminate the linkage for each temperature control channel. The display module is used to display the real-time temperature of each area in the workshop, the operating status of each temperature control channel, and the operating status of each industrial fan. The main control module is used to receive the zone temperature information and parameter setting information corresponding to each temperature control channel, and send control commands to the temperature difference analysis module, start-stop control module, graded speed regulation module, adjacent zone linkage control module and output drive module according to the zone temperature information. The temperature difference analysis module is used to obtain the real-time temperature and set temperature of each area, and to calculate the temperature difference between adjacent areas and the change status of the temperature difference. The start / stop control module is used to generate a fan start command when the real-time temperature of the area reaches the start-up temperature of the corresponding temperature control channel, and to maintain the current start / stop state of the corresponding industrial fan when the real-time temperature of the area does not reach the start-up temperature. The graded speed control module is used to control the speed of the industrial fan corresponding to the temperature control channel to change step by step according to the graded speed control temperature corresponding to the real-time temperature of the area after the industrial fan is started. The adjacent area linkage control module is used to control the industrial large fan in the adjacent area that is close to this area to enter auxiliary operation when the real-time temperature of this area reaches the linkage condition of the adjacent area, and to release the auxiliary operation when the temperature difference between this area and the adjacent area reaches the linkage exit temperature difference. The output drive module is used to receive control commands generated by the start-stop control module, the graded speed regulation module and the adjacent area linkage control module, and drive the industrial fans in this area and the auxiliary industrial fans in adjacent areas to perform start-stop and speed regulation respectively.

2. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 1, characterized in that: The lower end of the hollow cylinder is movably attached to the inner wall of the inlet port. When the elastic rope is in a normally stretched state, the first air hole and the second air hole are located above the inlet port. At this time, the second air hole is located directly above the inlet port.

3. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 2, characterized in that: When the elastic rope is in a normally relaxed state, the connecting rope is in a straight stretched state. At this time, the movable armature is located at the farthest end of the guide groove from the electromagnet.

4. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 2, characterized in that: Rotating rings are movably sleeved on the outer walls of both ends of the rotating shaft inside the hollow cylinder. A counterweight rod is fixedly connected to the lower end of the rotating ring. A counterweight filter screen is fixedly connected to the bottom of the counterweight rod. The two ends of the counterweight filter screen are arc-shaped and fit against the arc-shaped inner wall of the hollow cylinder.

5. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 4, characterized in that: When the first air hole is located directly below the hollow cylinder and corresponds to the opening, the first air hole is located below the counterweight filter screen, and the second air hole is located above the counterweight filter screen. At this time, the movable armature is attracted and attached to the outer wall of the electromagnet.

6. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 4, characterized in that: A fixing rod is fixedly connected to the outer wall of the rotating shaft between the rotating rings, and a long brush is fixedly connected to the end of the fixing rod. The end of the long brush rests on the upper end of the counterweight filter screen.

7. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 1, characterized in that: Heat dissipation fins are fixedly connected to the rear sidewalls of the housing on both sides of the heat dissipation plate in an alternating manner. The heat dissipation fins form a temperature acquisition area and a fan control area on the rear sidewalls of the housing, respectively. Wiring holes are evenly spaced on the sidewalls of the temperature acquisition area and the fan control area, and each wiring hole is provided with an isolation cover.

8. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 7, characterized in that: The isolation cover includes a fixed cylinder that is fixedly connected to the side wall of the temperature acquisition area and the fan control area. The fixed cylinder surrounds the outside of the wiring hole. A notch is provided at the intersection of the top and side wall of the fixed cylinder. A sliding groove is provided on the side wall of the fixed cylinder below the notch. A slider is movably engaged in the sliding groove. A rotating cylinder is fixedly connected to the end of the slider. The rotating cylinder is adapted to the notch and is sleeved around the outside of the fixed cylinder.

9. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 8, characterized in that: An annular groove is provided on the side wall of the fixed cylinder below the slide groove. A coil spring is fixedly connected to the side wall of the annular groove. The outer end of the coil spring is fixedly connected to the inner wall of the rotating cylinder. A crescent hole is provided at the middle of the top of both the rotating cylinder and the fixed cylinder. A sealing gasket is also fixedly connected to the inner wall of the crescent hole. When the coil spring is in a normally relaxed state, the notch on the rotating cylinder and the fixed cylinder is closed.

10. The industrial large fan linkage temperature control device based on zoned temperature sensing according to claim 1, characterized in that: The protective plates are provided on the side walls at both ends of the housing. The protective plates include a main board and V-shaped elastic rods fixedly connected to the upper and lower ends of the side wall at the end of the main board. The ends of the V-shaped elastic rods are fixedly connected to the outer wall of the temperature control panel. The extension plates at the upper and lower ends of the main board are engaged with the outer walls at the upper and lower ends of the housing. A limiting groove is opened in the middle of the main board. An elastic plate is fixedly connected to the inner wall of the limiting groove near the V-shaped elastic rod. The end of the elastic plate is inclined away from the housing.

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