A kind of anti-condensation heating structure for magnetic control column circuit breaker
Patent Information
- Application Number
- CN202521841935.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-08-28
AI Technical Summary
[0004]为了克服现有加热器布置在机构箱底板，热空气上升后形成顶热底冷死角，极柱上部和二次端子排仍易凝露，同时无强制循环或导热结构无法覆盖三相支柱和磁控机构死角的缺点，技术问题：提供一种磁控柱上断路器用防凝露加热结构
[0014] The beneficial effects achieved by this utility model are as follows: This utility model, through the cooperation of components such as the pole, terminal, and integrated hot air circulation module, evenly blows hot air into the interior of the housing, forming an effective circulation and heating the pole. This uniform heating method avoids the drawbacks of localized overheating while distant areas are still prone to condensation, ensuring that the surface temperature of high-risk components such as the pole is always above the dew point, reducing the generation of condensation dead zones in the magnetically controlled circuit breaker. Through the cooperation of components such as the micro-heater, micro-heat pipe, and self-limiting heating element, the condensation on the surface of the pole melts and slides off after heating, effectively reducing condensation generation. Through the cooperation of components such as the waterproof frame, first partition, and second partition, the micro-heat pipe and micro-heater can be covered, preventing the surface of the micro-heat pipe and micro-heater from freezing due to excessive temperature differences during operation.
Smart Images
Figure CN224759332U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an anti-condensation heating structure, and more particularly to an anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker. Background Technology
[0002] The purpose of setting up anti-condensation heating in magnetically controlled pole-mounted circuit breakers is to ensure that the internal temperature of the equipment is always more than 2°C higher than the outside temperature, completely eliminating condensation conditions and ensuring the long-term reliability of insulation, mechanics, and secondary systems. The existing heaters are arranged on the bottom plate of the mechanism box. After the hot air rises, it forms a dead zone of top heat and bottom cold. Condensation is still easy to form on the upper part of the pole and the secondary terminal block. At the same time, without forced circulation or heat conduction structure, it is impossible to cover the dead zone of the three-phase pole and magnetic control mechanism.
[0003] Therefore, there is a particular need for an anti-condensation heating structure for magnetically controlled column-mounted circuit breakers to solve the problems existing in the prior art. Utility Model Content
[0004] To overcome the shortcomings of existing heaters located on the bottom plate of the mechanism box, which create a dead zone of top heat and bottom cold after hot air rises, and the fact that condensation is still easy to form on the upper part of the pole and the secondary terminal block, and that the lack of forced circulation or heat conduction structure cannot cover the dead zone of the three-phase support and magnetic control mechanism, the technical problem is to provide an anti-condensation heating structure for magnetic control pole-mounted circuit breakers.
[0005] The technical solution adopted by this utility model is: a magnetically controlled column-mounted circuit breaker anti-condensation heating structure, including multiple poles spaced apart on the upper part of the shell, and a terminal is welded to the top of each pole, which is used to introduce or lead current into or out of the pole. An air inlet pipe and an air outlet pipe are respectively provided on both sides of the front part of the outer wall of the shell, and the air inlet pipe and the air outlet pipe form a gas circulation path; an integrated hot air circulation module is provided on the front side of the air inlet pipe; A micro heater is installed on the rear part of the outer wall of the shell. Multiple micro heat pipes are spaced apart at the upper end of the micro heater. The number of micro heat pipes is the same as that of the electrode posts. A self-limiting heating element is installed at the lower part of each electrode post. The front end of the micro heat pipe is connected to the self-limiting heating element. A temperature control switch is embedded in the front of the outer wall of the housing. The temperature control switch is connected in series with the integrated hot air circulation module and the micro heater power supply circuit.
[0006] The aforementioned magnetically controlled pole-mounted circuit breaker uses an anti-condensation heating structure. A status indicator is rotatably connected to the front wall of the housing. The status indicator is electrically connected to the pole. A status plate is vertically installed above the status indicator. The status indicator and the status plate work together to display the energization status of the pole.
[0007] The aforementioned magnetically controlled column-mounted circuit breaker uses an anti-condensation heating structure. The integrated hot air circulation module includes a heat transfer pipe and a heat collection box. One end of the heat transfer pipe is connected to an air inlet pipe, and the other end is welded to a heat collection box. The heat collection box contains a heater, and the front and rear parts of the heater are respectively equipped with a fan and a heating pipe. A baffle plate is provided at the end of the heat collection box.
[0008] The aforementioned magnetically controlled pole-mounted circuit breaker uses an anti-condensation heating structure, wherein the temperature control switch is a normally open, snap-action mechanical temperature control switch, and its temperature setting is 2°C.
[0009] The aforementioned magnetically controlled column-mounted circuit breaker uses an anti-condensation heating structure. A waterproof frame is horizontally arranged above the micro-heater. The front and rear sides of the waterproof frame are respectively provided with a first partition and a second partition. The left and right sides of the waterproof frame are respectively connected to a shielding plate. The waterproof frame, the first partition, the second partition, and the shielding plate together form a protective cavity for wrapping the micro-heater and the micro-heat pipe.
[0010] The aforementioned magnetically controlled column-mounted circuit breaker uses an anti-condensation heating structure, in which the first partition is provided with a hole that matches the position of the micro heat pipe 19, allowing the micro heat pipe to pass through the first partition and connect to the self-limiting heating element.
[0011] The aforementioned magnetically controlled column-mounted circuit breaker uses an anti-condensation heating structure, with a baffle plate at the outer end of the heat collection box. The baffle plate is used to reduce the entry of foreign objects into the housing.
[0012] The aforementioned magnetically controlled column-mounted circuit breaker uses an anti-condensation heating structure. The vent pipe is a two-way pipe. Channel one is equipped with a filter screen, and channel two is detachably connected to a storage box via a threaded connector to absorb excess moisture inside the casing.
[0013] The aforementioned magnetically controlled pole-mounted circuit breaker uses an anti-condensation heating structure, with mounting seats on both the left and right sides of the bottom of the outer wall of the housing. The mounting seats are used to fix the housing in a designated position. The left and right sides of the outer wall of the housing are also provided with handles, which are used to assist in moving the housing.
[0014] The beneficial effects achieved by this utility model are as follows: This utility model, through the cooperation of components such as the pole, terminal, and integrated hot air circulation module, evenly blows hot air into the interior of the housing, forming an effective circulation and heating the pole. This uniform heating method avoids the drawbacks of localized overheating while distant areas are still prone to condensation, ensuring that the surface temperature of high-risk components such as the pole is always above the dew point, reducing the generation of condensation dead zones in the magnetically controlled circuit breaker. Through the cooperation of components such as the micro-heater, micro-heat pipe, and self-limiting heating element, the condensation on the surface of the pole melts and slides off after heating, effectively reducing condensation generation. Through the cooperation of components such as the waterproof frame, first partition, and second partition, the micro-heat pipe and micro-heater can be covered, preventing the surface of the micro-heat pipe and micro-heater from freezing due to excessive temperature differences during operation. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the status indicator, status panel, and air intake pipe of this utility model. Figure 3 This is a three-dimensional structural diagram of the air outlet pipe and filter screen of this utility model; Figure 4 This is a three-dimensional structural diagram of the threaded tube and storage box components of this utility model; Figure 5 This is an exploded view of the mounting plate, heater, and fan components of this utility model; Figure 6 This is a three-dimensional structural diagram of the components of this utility model, including the shield, micro heater, and micro heat pipe. Figure 7 This is a three-dimensional structural diagram of the self-limiting temperature heating element, protective cover, and waterproof frame of this utility model; Figure 8 This is a three-dimensional structural diagram of the first partition and the second partition of this utility model.
[0016] Reference numerals: 1. Housing, 2. Mounting base, 3. Pole post, 4. Terminal, 5. Status indicator, 6. Status board, 7. Inlet pipe, 8. Outlet pipe, 9. Filter screen, 10. Heat transfer pipe, 11. Heat collection box, 12. Mounting plate, 13. Heater, 14. Fan, 15. Heating tube, 16. Isolation plate, 17. Shielding plate, 18. Micro heater, 1801. Temperature control switch, 19. Micro heat tube, 20. Self-limiting heating element, 21. Protective cover, 22. Waterproof frame, 23. First partition, 24. Second partition, 25. Threaded connector, 26. Storage box, 27. Handle. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0018] Example 1
[0019] A magnetically controlled pole-mounted circuit breaker anti-condensation heating structure includes multiple poles 3 spaced apart on the upper part of the housing 1. Each pole 3 has a terminal 4 welded to its top, which is used to introduce or lead current into or out of the pole 3. An air inlet pipe 7 and an air outlet pipe 8 are respectively provided on both sides of the front part of the outer wall of the housing 1. The air inlet pipe 7 and the air outlet pipe 8 form a gas circulation path; an integrated hot air circulation module is provided on the front side of the air inlet pipe 7. A micro heater 18 is installed on the rear part of the outer wall of the housing 1. Multiple micro heat pipes 19 are spaced apart at the upper end of the micro heater 18. The number of micro heat pipes 19 is the same as that of the poles. A self-limiting heating element 20 is installed at the lower part of each pole 3. The front end of the micro heat pipe 19 is connected to the self-limiting heating element 20. A temperature control switch 1801 is embedded in the front of the outer wall of the housing. The temperature control switch 1801 is connected in series with the power supply circuit of the integrated hot air circulation module and the micro heater 18.
[0020] As shown in the attached figure, the anti-condensation heating structure for a magnetically controlled pole-mounted circuit breaker includes a housing 1, a mounting base 2, a pole 3, a terminal block 4, a status indicator 5, a status board 6, an air inlet pipe 7, an air outlet pipe 8, a filter screen 9, a heat transfer pipe 10, a heat collection box 11, a mounting plate 12, a heater 13, a fan 14, a heating tube 15, a temperature control switch 1801, a partition plate 16, a shielding plate 17, a micro heater 18, a micro heat pipe 19, a self-limiting heating element 20, a protective cover 21, a waterproof frame 22, a first partition 23, a second partition 24, and a handle 27.
[0021] The interior of the housing 1 is a sealed electrical equipment cavity. Multiple poles 3 are spaced apart on the upper part of the housing 1. Each pole 3 has a terminal 4 welded to its top for wiring. In this embodiment, three poles 3 are used. A status indicator 5 is rotatably connected to the front side of the outer wall of the housing 1. The status indicator 5 is electrically connected to the poles 3. The status indicator 5 includes a current transformer, a relay and a pointer. The rated secondary current of the current sensor is 5A. A status plate 6 is vertically arranged above the status indicator 5. The status indicator 5 and the status plate 6 cooperate to display the energization status of the pole 3. The status plate 6 is divided into two sides. One side displays the normal state, indicating that the pole 3 is energized. The other side displays the abnormal state, indicating that the pole 3 is de-energized.
[0022] Specifically, when pole 3 is energized, the current transformer of status indicator 5 generates a 5A current, the relay coil is energized and engaged, causing the pointer to point to the normal area displayed on status board 6; when pole 3 is de-energized, the current transformer output of status indicator 5 is 0, the relay coil is de-energized and released, and the internal spring drives the pointer to point to the abnormal area displayed on status board 6.
[0023] An air inlet pipe 7 and an air outlet pipe 8 are respectively provided on the front side of the outer wall of the housing 1 and on both sides of the status indicator 5. An integrated hot air circulation module is provided on the front side of the air inlet pipe 7. The integrated hot air circulation module includes a heat transfer pipe 10 and a heat collection box 11. One end of the heat transfer pipe 10 is snapped into the air inlet pipe 7, and the other end is welded to the heat collection box 11. The heat collection box 11 includes a mounting plate 12. A heater 13 is installed on the inner wall of the mounting plate 12. A fan 14 for suction is rotatably provided at the front of the heater 13. A heating pipe 15 for heating is provided in the middle of the rear of the heater 13. A baffle plate 16 is provided at the outer end of the heat collection box 11 to prevent foreign objects from entering the interior of the housing 1. A filter screen 9 is installed at the end of the air outlet pipe 8 to reduce the entry of foreign objects into the interior of the housing 1.
[0024] A temperature control switch 1801 is embedded on the front side of the outer wall of the housing 1 and on the side of the status indicator 5. The temperature control switch 1801 is connected in series in the main circuit of the integrated hot air circulation module power supply. The temperature control switch 1801 is a normally open, snap-action mechanical temperature control switch with an operating temperature set at 2°C.
[0025] A micro-heater 18 is installed on the rear side of the outer wall of the housing 1. A temperature control switch 1801 is electrically connected to the micro-heater 18. Both ends of the micro-heater 18 are provided with baffles 17. Multiple micro-heat pipes 19 are spaced apart on the micro-heater 18. The number of micro-heat pipes 19 is the same as that of the pole posts 3. A self-limiting heating element 20 is installed at the bottom of each pole post 3. The front end of the micro-heat pipe 19 is connected to the rear side of the corresponding self-limiting heating element 20. A protective cover 21 is installed at the bottom of each pole post 3. The lower rear side of the protective cover 21 is connected to the upper rear side of the self-limiting heating element 20. The self-regulating heating element 20 can be a ring heater made of graphene PTC ring, ceramic PTC ring, or other materials with a positive temperature coefficient effect.
[0026] A waterproof frame 22 is horizontally arranged above the micro heater 18. A first partition 23 and a second partition 24 are respectively provided on the front and rear sides of the waterproof frame 22. The left and right sides of the waterproof frame 22 are respectively connected to the baffle plate 17. The waterproof frame 22, the first partition 23, the second partition 24 and the baffle plate 17 together form a protective cavity for wrapping the micro heater 18 and the micro heat pipe 19, which serves to waterproof, prevent dust, prevent mechanical impact and ensure heating efficiency.
[0027] The first partition 23 is provided with holes that match the position of the micro heat pipe 19, so that the micro heat pipe 19 passes through the first partition 23 and connects to the self-limiting heating element 20.
[0028] The outer wall of the housing 1 is provided with mounting bases 2 on both the left and right sides of the bottom. The mounting bases 2 are used to fix the housing 1 in a designated position. The outer wall of the housing 1 is provided with handles 27 on both the left and right sides. The staff can use the handles 27 to move the housing 1, thereby realizing the function of fine adjustment.
[0029] The working process of the anti-condensation heating structure for the magnetically controlled pole-mounted circuit breaker in this embodiment is as follows: The operator connects the wire to the terminal 4. When the wire is energized, it will supply power to the pole 3. After the pole 3 is energized, the status indicator 5 will rotate to the left side of the status board 6 to show the normal state. When the pole 3 is not energized, the status indicator 5 will reverse to the right side of the status board 6 to show the abnormal state. In this way, the operator can verify whether the pole is energized by observing the status indicator 5.
[0030] In operation, the temperature control switch 1801 continuously monitors the ambient temperature inside the housing 1.
[0031] When the temperature control switch 1801 senses that the internal temperature of the housing 1 is lower than the preset threshold of 2℃, the internal contacts of the temperature control switch 1801 close, simultaneously connecting the power supply circuit of the heater 13 and the fan 14. The heater 13 will cause the fan 14 to rotate, and the rotation of the fan 14 will draw the external gas into the heat collection box 11. The heating tube 15 in the heater 13 will work simultaneously. The heating tube 15 will heat the gas in the heat collection box 11, and the fan 14 will blow the heated gas in the heat collection box 11 into the housing 1. The hot gas forms a circulation flow inside the housing 1, so that the temperature inside the housing 1 rises evenly and rapidly. The temperature rise inside the housing 1 will heat the pole 3, reducing the generation of anti-condensation of the circuit breaker on the magnetic control pole. Excess gas will be discharged from the gas outlet pipe 8, thereby relieving pressure and preventing overpressure explosion inside the housing 1.
[0032] When the internal contacts of the temperature control switch 1801 close, the power supply circuit of the micro heater 18 is connected. The heat generated by the micro heater 18 is transferred to the self-limiting heating element 20 through the micro heat pipe 19. The self-limiting heating element 20 starts to heat up and uses its thermal conductivity and self-regulation characteristics to uniformly heat the electrode 3. The temperature of the electrode 3 rises, so that its surface temperature is always higher than the ambient dew point temperature. The condensation that already exists on its surface evaporates and disappears, and the condensation that has not yet formed is effectively suppressed, thereby significantly reducing the generation of condensation.
[0033] When the temperature control switch 1801 senses that the internal temperature of the housing 1 is higher than the preset threshold of 2℃, the temperature control switch 1801 will turn off the heater 13, the heater 13 will stop the fan 14 from rotating, and then the heating tube 15 will heat the gas in the heat collection box 11. This can effectively reduce the waste of resources and achieve precise anti-condensation dead corners.
[0034] When the micro heater 18 is turned off, the self-limiting heating element 20 will stop heating the electrode 3. The shield 17 provides support, and the protective cover 21 can prevent condensation from falling directly and wetting the self-limiting heating element 20, thereby effectively extending the service life of the self-limiting heating element 20. The function of the first partition 23, the second partition 24, and the waterproof frame 22 is to cover the micro heat pipe 19 and the micro heater 18. The purpose of covering is to prevent freezing due to excessive temperature difference.
[0035] Example 2
[0036] The air outlet pipe 8 can also be a two-way pipe, with a filter screen 9 installed in the first channel and a storage box 26 detachably connected to the second channel via a threaded connector 25.
[0037] To further reduce moisture inside the casing 1, an appropriate amount of desiccant can be placed in the storage box 26. Excess moisture or water inside the casing 1 will be squeezed from the vent pipe 8 into the threaded pipe 25. The moisture or water in the threaded pipe 25 will be concentrated in the storage box 26. When there is a lot of moisture in the storage box 26, the operator can loosen the storage box 26 and then pour out the moisture. The operator can then replace the desiccant with a new one and then put the storage box 26 back in place.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A condensation-proof heating structure for a magnetically controlled column-mounted circuit breaker, characterized in that, It includes multiple pole posts (3) spaced apart on the upper part of the housing (1), and each pole post (3) has a terminal (4) welded to its top. The terminal (4) is used to introduce or lead current into or out of the pole post (3). An air inlet pipe (7) and an air outlet pipe (8) are respectively provided on both sides of the front part of the outer wall of the shell (1). The air inlet pipe (7) and the air outlet pipe (8) form a gas circulation passage; an integrated hot air circulation module is provided on the front side of the air inlet pipe (7). A micro heater (18) is installed on the rear part of the outer wall of the shell (1). Multiple micro heat pipes (19) are spaced at the upper end of the micro heater (18). The number of micro heat pipes (19) is the same as that of the pole (3). A self-limiting heating element (20) is installed at the lower part of each pole (3). The front end of the micro heat pipe (19) is connected to the self-limiting heating element (20). A temperature control switch (1801) is embedded in the front of the outer wall of the housing (1). The temperature control switch (1801) is connected in series with the power supply circuit of the integrated hot air circulation module and the micro heater (18).
2. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, A status indicator (5) is rotatably connected to the front wall of the housing (1). The status indicator (5) is electrically connected to the pole (3). A status plate (6) is vertically provided above the status indicator (5). The status indicator (5) and the status plate (6) work together to display the energized status of the pole (3).
3. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The integrated hot air circulation module includes a heat transfer pipe (10) and a heat collection box (11). One end of the heat transfer pipe (10) is connected to an air inlet pipe (7), and the other end is welded to a heat collection box (11). The heat collection box (11) includes a heater (13). The front and rear parts of the heater (13) are respectively provided with a fan (14) and a heating pipe (15). The end of the heat collection box (11) is provided with a baffle plate (16).
4. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The temperature control switch (1801) is a normally open, snap-action mechanical temperature control switch with a temperature setting of 2°C.
5. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The micro heater (18) is horizontally provided with a waterproof frame (22) above it. The front and rear sides of the waterproof frame (22) are respectively provided with a first partition (23) and a second partition (24). The left and right sides of the waterproof frame (22) are respectively connected to the shielding plate (17). The waterproof frame (22), the first partition (23), the second partition (24) and the shielding plate (17) together form a protective cavity for wrapping the micro heater (18) and the micro heat pipe (19).
6. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 5, characterized in that, The first partition (23) has holes that match the position of the micro heat pipe (19), so that the micro heat pipe (19) passes through the first partition (23) and connects to the self-limiting heating element (20).
7. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The heat collection box (11) is provided with a baffle plate (16) at the outer end, which is used to reduce foreign objects from entering the interior of the housing (1).
8. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The vent pipe (8) is a two-way pipe. A filter screen (9) is installed in the first channel, and a storage box (26) is detachably connected to the second channel through a threaded connector (25) for absorbing excess moisture inside the shell (1).
9. The anti-condensation heating structure for a magnetically controlled column-mounted circuit breaker according to claim 1, characterized in that, The outer wall of the housing (1) is provided with mounting bases (2) on both the left and right sides of the bottom. The mounting bases (2) are used to fix the housing (1) in a designated position. The outer wall of the housing (1) is provided with handles (27) on both the left and right sides. The handles (27) are used to assist in moving the housing (1).