PTC heater with waterproof structure

Abstract

The invention belongs to the technical field of waterproof structures, and particularly relates to a PTC heater with a waterproof structure, which comprises a base, a plurality of groups of heating assemblies are distributed at the upper end of the base in a linear array manner, each heating assembly comprises a PTC heating plate and a conduction sheet, and the upper end of the base is fixedly connected with a heat dissipation shell covering the periphery of the heating assembly. And the upper end of the base is fixedly connected with a waterproof shell covering the peripheral side of the heat dissipation shell. By arranging the heat dissipation assembly, when the PTC heater is used, the heat dissipation effect of the PTC heater can be adjusted according to the heating degree of the PTC heater to the working environment according to the characteristic that the volume of a heat expansion and cold contraction medium changes after being heated, the poor heating effect caused by too high heat dissipation performance is avoided, and meanwhile overheating damage to the PTC heater caused by too low heat dissipation performance is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of heaters, and in particular relates to a PTC heater with a waterproof structure. Background Art

[0002] PTC heater is an electric heating device that uses the positive temperature coefficient (PTC) material characteristics to heat. It realizes self-regulating heating process through the characteristics of the material, and does not require external temperature control equipment to adjust the temperature. During the use of PTC heater, when the temperature rises, the resistance of the PTC material gradually increases, causing the current to gradually decrease, thereby limiting overheating and avoiding the danger of overheating. When the temperature drops, the resistance of the PTC material will decrease, allowing more current to flow, thereby maintaining a relatively stable heating temperature.

[0003] This self-regulating property makes PTC heaters very popular in many applications, especially in situations where automatic temperature adjustment is required, such as heaters, electric water heaters, electric heaters, car heaters, etc. Existing PTC heaters usually need to be provided with a waterproof structure to prevent water vapor from entering the electrical part of the PTC heater and causing a short circuit, such as a waterproof structure for a PTC heater disclosed in publication number CN116867129B. However, the above PTC heater still has the following technical problems during use:

[0004] When in use, the heat dissipation performance cannot be adjusted according to the heating degree of the PTC heater:

[0005] When the PTC heater is in a relatively low heating state (such as the initial stage of use), less heat is generated. If the heat dissipation performance is too high at this time, it means that the heat is not fully utilized, resulting in poor heating effect. The ratio between the energy consumption and output heat of the heater is not ideal, resulting in energy waste;

[0006] When the PTC heater is in a relatively high heating state (such as the constant temperature stage used later), more heat is generated. If the heat dissipation performance is too low at this time, it may cause the temperature to be too high, thereby triggering the self-limiting mechanism and even damaging the heater.

[0007] Therefore, there is an urgent need for a PTC heater with a waterproof structure that can adjust the heat dissipation performance of the PTC heater. Summary of the invention

[0008] The object of the present invention is to provide a PTC heater with a waterproof structure capable of adjusting the heat dissipation performance according to the heating degree of the PTC heater in view of the problems raised in the above background technology.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A PTC heater with a waterproof structure, comprising:

[0011] A base, wherein a plurality of groups of heating components are distributed in a linear array on the upper end of the base, wherein the heating components include a PTC heating plate and a conductive sheet, wherein a heat dissipation housing covered on the periphery of the heating components is fixedly connected to the upper end of the base, and a waterproof housing covered on the periphery of the heat dissipation housing is fixedly connected to the upper end of the base;

[0012] A heat dissipation component, used for adjusting the heat dissipation effect of the PTC heating plate according to the temperature of the working environment, the heat dissipation component includes an air inlet and an air outlet fixedly connected to the two side walls of the heat dissipation shell, a fan is arranged in the air inlet, a control block is arranged on the inner top wall of the heat dissipation shell, a liquid storage chamber and a control chamber are opened inside the control block, a piston block is sealingly and slidably connected to the inner wall of the liquid storage chamber, a moving block is slidably connected to the inner wall of the control chamber, a space on one side of the liquid storage chamber away from the moving block is filled with a thermal expansion and contraction medium, a connecting rod is fixedly connected between the piston block and the moving block, a sliding rheostat driven by the connecting rod is arranged on the upper wall of the heat dissipation shell, a power supply device is fixedly connected to the inner top wall of the waterproof shell, and the fan is connected in series with the power supply device through a sliding rheostat;

[0013] Waterproof components are used to prevent moisture in the air from entering the heat dissipation housing and causing a short circuit;

[0014] The regulating component is used to detect the air humidity around the heater according to the amount of water accumulated per unit time, and to regulate the air humidity to a suitable range.

[0015] Preferably, the sliding rheostat comprises a resistance rod fixedly connected to the upper wall of the heat dissipation housing, a sliding sheet is slidably connected to the resistance rod, and an L-shaped rod is fixedly connected between the sliding sheet and the connecting rod.

[0016] Preferably, the waterproof component includes an air inlet channel and an air exhaust channel fixedly connected to the two side walls of the waterproof shell, a water filter plate is provided in the air inlet channel, a one-way valve is provided in the air exhaust channel, and an extrusion component is also provided in the air inlet channel for periodically squeezing the water filter plate to drain water to ensure the waterproof effect.

[0017] Preferably, the extrusion component includes a telescopic plate fixedly connected to the lower end of the water filter plate, a water storage frame is provided on the side of the telescopic plate close to the outside, a triangular extrusion plate is fixedly connected to the side of the upper end of the water storage frame close to the water filter plate, two support rods are hinged on the upper end of the triangular extrusion plate, and the parts of the two support rods extending above the waterproof shell are fixedly connected to a transmission plate, a mounting block is fixedly connected to the outer wall of the waterproof shell, a screw is rotatably connected to the upper end of the mounting block, a motor for driving the screw is fixedly connected to the lower end of the mounting block, a lifting block is threadedly connected to the screw, a mounting plate is fixedly connected to the lifting block, the lower end of the mounting plate is slidably connected to a sliding plate in a horizontal direction, and the lower end of the mounting plate is also fixedly connected A block, a plurality of first springs distributed in a linear array are arranged between the sliding plate and the block, a swing plate is rotatably connected to the bottom of the sliding plate, and a baffle is also fixedly connected to the lower end of the sliding plate, a second spring is arranged between the swing plate and the baffle, and the end of the swing plate away from the sliding plate is rotatably connected to the top of the transmission plate, trapezoidal guide plates are fixedly connected on both sides of the sliding plate, two first extension rods and two second extension rods are fixedly connected to the outer wall of the waterproof shell, the end of the first extension rod away from the waterproof shell is rotatably connected to a guide wheel that contacts and rolls with the trapezoidal guide plate, a gear is coaxially fixedly connected to the rotation connection between the water storage frame and the support rod, and a rack meshing with the gear is fixedly connected to the second extension rod.

[0018] Preferably, a limiting plate is fixedly connected to the outer wall of the waterproof housing, and the lifting block is slidably connected to the side wall of the limiting plate along the vertical direction.

[0019] Preferably, a top wall of the waterproof housing is provided with an access groove, and inner walls on both sides of the access groove are slidably connected to a plurality of groups of triangular sealing plates distributed in a linear array.

[0020] Preferably, the adjustment assembly is controlled by an extrusion component, and includes a cyclone gas-water separator fixedly connected to the top wall of the waterproof outer shell, the outer walls on both sides of the cyclone gas-water separator are respectively fixedly connected with an input port and an output port, the input port and the output port are both fixedly connected with a semicircular block, and a semicircular adjustment plate is rotatably connected in the semicircular block, a water storage cylinder is provided above the base, the inner wall of the water storage cylinder is sealingly and slidably connected with a bearing plate, a third spring is provided between the bearing plate and the inner bottom wall of the water storage cylinder, an air supply pipe is fixedly connected on the side wall of the water storage cylinder below the bearing plate, and a shunt pipe is fixedly connected at one end of the air supply pipe away from the water storage cylinder, and the shunt pipe is respectively connected to the interiors of the two semicircular blocks.

[0021] Compared with the existing technology, the advantages of the PTC heater with waterproof structure are:

[0022] 1. The present invention sets a heat dissipation component. When in use, the heat dissipation effect of the PTC heater is adjusted according to the degree of heating of the working environment by the PTC heater. When the working environment temperature is low, the power of the fan is low, so that the heat dissipation performance of the fan to the PTC heater is low, thereby avoiding poor heating effect caused by excessive heat dissipation performance. When the working environment temperature is high, the thermal expansion and contraction medium in the liquid storage chamber expands and becomes larger, thereby pushing the piston block and the moving block to move to the right, further driving the sliding plate to move to the right on the resistance rod, reducing the resistance of the circuit where the fan is located, thereby increasing the current, adjusting the power of the fan, and correspondingly improving the heat dissipation effect of the PTC heater when the working environment temperature is high, thereby avoiding overheating and damage of the PTC heater caused by excessively low heat dissipation performance.

[0023] 2. The present invention sets a waterproof component. When the fan is working and the PTC heater is dissipating heat, the water in the air entering the waterproof housing is filtered through a water filter plate to prevent the water from entering the heat dissipation housing. The heat dissipation and waterproof functions are combined to ensure the heat dissipation effect while preventing water vapor from entering the PTC heater.

[0024] 3. The present invention sets an extrusion component. When filtering the moisture in the air through the water filter plate, the motor drives the screw to rotate, thereby driving the lifting block and the mounting plate to perform reciprocating vertical displacement. When the mounting plate moves from bottom to top, the triangular extrusion plate is first driven close to the bottom of the extrusion water filter plate, and then the triangular extrusion plate is displaced upward along the water filter plate to store the filtered moisture into the water storage frame. When the water storage frame is completely moved out of the air inlet channel, it moves to face the water storage cylinder, and the accumulated moisture inside is dumped into the water storage cylinder for storage. The water filter plate can be periodically squeezed and drained to ensure the filtering effect of the water filter plate on the moisture in the air. There is no need for the staff to manually replace the water filter plate frequently, which improves the work efficiency while avoiding the blockage of the water filter plate and the reduction of the heat dissipation effect of the PTC heater.

[0025] 4. The present invention provides a regulating component. When the PTC heater is used in a bathroom, kitchen, car or other environment with high humidity, the air around the working environment can be pumped in through a cyclone-type air-water separator, and the air can be pumped out after the water is separated, so as to reduce the humidity of the working environment and adjust the humidity. The humidity reducing effect can change with the humidity of the working environment. When the humidity is relatively high, the humidity reducing effect is improved, while when the humidity is relatively low, the humidity reducing effect is reduced. This ensures that the air humidity around the working environment of the PTC heater is always maintained at a more suitable state, thereby avoiding corrosion of metal parts (such as the outer casing of the heater) when the humidity is too high, thereby affecting the service life of the heater, and preventing static electricity accumulation from interfering with electrical equipment in the PTC heater when the humidity is too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0028] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 It is a schematic cross-sectional structure diagram of the air inlet channel in the present invention;

[0030] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0031] Figure 6 yes Figure 4 Enlarged view of point C in the middle;

[0032] Figure 7 is a partial cross-sectional view of the adjustment component in the present invention;

[0033] Figure 8 yes Figure 7 Enlarged view of point D in the middle.

[0034] In the figure: 1. base; 11. PTC heating plate; 12. conduction sheet; 13. heat dissipation shell; 14. waterproof shell; 2. heat dissipation component; 21. air inlet; 22. air outlet; 23. control block; 24. liquid storage chamber; 25. control chamber; 26. piston block; 27. moving block; 28. connecting rod; 29. ​​power supply device; 210. resistance rod; 211. slide; 212. L-shaped rod; 3. waterproof component; 31. air inlet channel; 32. air outlet channel; 33. water filter plate; 34. extrusion component; 341. telescopic plate; 342. water storage frame; 343. triangular extrusion plate; 344. support rod; 345. transmission plate; 346. mounting block; 347. screw; 348. motor; 349, lifting block; 3410, mounting plate; 3411, sliding plate; 3412, stopper; 3413, first spring; 3414, swing plate; 3415, baffle; 3416, second spring; 3417, trapezoidal guide plate; 3418, first extension rod; 3419, second extension rod; 3420, guide wheel; 3421, gear; 3422, rack; 4, adjustment assembly; 41, cyclone gas-water separator; 42, input port; 43, output port; 44, semicircular stopper; 45, semicircular adjustment plate; 46, water storage cylinder; 47, bearing plate; 48, third spring; 49, gas pipe; 410, shunt pipe; 5, limit plate; 6, access groove; 61, triangular sealing plate. DETAILED DESCRIPTION

[0035] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0036] Example: Refer to Figures 1 to 8 , a PTC heater with a waterproof structure, comprising:

[0037] A base 1, a plurality of groups of heating components are linearly arranged in an array on the upper end of the base 1, the heating components include a PTC heating plate 11 and a conductive sheet 12, a heat dissipation housing 13 is fixedly connected to the upper end of the base 1 and a waterproof housing 14 is fixedly connected to the upper end of the base 1 and is covered on the side of the heat dissipation housing 13;

[0038] The heat dissipation component 2 is used to adjust the heat dissipation effect of the PTC heating plate 11 according to the temperature of the working environment. The heat dissipation component 2 includes an air inlet 21 and an air outlet 22 fixedly connected to the two side walls of the heat dissipation shell 13. A fan is arranged in the air inlet 21. A control block 23 is arranged on the inner top wall of the heat dissipation shell 13. A liquid storage chamber 24 and a control chamber 25 are opened inside the control block 23. A piston block 26 is sealingly and slidably connected to the inner wall of the liquid storage chamber 24. A moving block 27 is slidably connected to the inner wall of the control chamber 25. A space on one side of the liquid storage chamber 24 away from the moving block 27 is filled with a thermal expansion and contraction medium. A connecting rod 28 is fixedly connected between the piston block 26 and the moving block 27. A sliding rheostat driven by the connecting rod 28 is arranged on the upper wall of the heat dissipation shell 13. A power supply device 29 is fixedly connected to the inner top wall of the waterproof shell 14. The fan is connected in series with the power supply device 29 through a sliding rheostat.

[0039] Specifically, the thermal expansion and contraction medium can be kerosene or diesel.

[0040] Specifically, the sliding rheostat includes a resistance rod 210 fixedly connected to the upper wall of the heat dissipation housing 13, a slider 211 is slidably connected to the resistance rod 210, and an L-shaped rod 212 is fixedly connected between the slider 211 and the connecting rod 28. When the slider 211 is at the left side of the resistance rod 210, the resistance value of the circuit where the fan is located is higher, and the fan is in a lower power working state. When the slider 211 is at the right side of the resistance rod 210, the resistance value of the circuit where the fan is located is lower, and the fan is in a higher power working state.

[0041] In view of the problem in the prior art that the heat dissipation performance cannot be adjusted according to the heating degree of the PTC heater, the present invention provides a heat dissipation component 2, and when in use, adjusts the heat dissipation effect of the PTC heater according to the heating degree of the PTC heater on the working environment. The specific adjustment process is as follows:

[0042] When the working environment temperature is low, the thermal expansion and contraction medium in the liquid storage chamber 24 is in a contracted state, the piston block 26 and the moving block 27 are on the left, and the slide 211 is at the left end position on the resistor rod 210, so that the resistance of the circuit where the fan is located is large and the current is small, so that the power of the fan is low. When the working environment temperature is low, the heat dissipation performance of the fan to the PTC heater is low, avoiding poor heating effect caused by excessive heat dissipation performance;

[0043] When the working environment temperature is high, the thermal expansion and contraction medium in the liquid storage chamber 24 expands and becomes larger, thereby pushing the piston block 26 and the moving block 27 to move to the right, and further driving the slide 211 to move to the right on the resistance rod 210, reducing the resistance of the circuit where the fan is located, thereby increasing the current and adjusting the power of the fan. When the working environment temperature is high, the heat dissipation effect of the PTC heater is correspondingly improved to avoid overheating damage to the PTC heater due to low heat dissipation performance.

[0044] The waterproof component 3 is used to prevent moisture in the air from entering the heat dissipation housing 13 and causing a short circuit;

[0045] The waterproof component 3 includes an air inlet channel 31 and an air exhaust channel 32 fixedly connected to the two side walls of the waterproof shell 14. A water filter plate 33 is provided in the air inlet channel 31, and a one-way valve is provided in the air exhaust channel 32. An extrusion component 34 is also provided in the air inlet channel 31 for periodically squeezing the water filter plate 33 to drain water to ensure the waterproof effect.

[0046] It is worth mentioning that the present invention sets a waterproof component 3. When the fan is working and the PTC heater is dissipating heat, the moisture in the air entering the waterproof housing 14 is filtered through the water filter plate 33 to prevent moisture from entering the heat dissipation housing 13. The heat dissipation and waterproof functions are combined to ensure the heat dissipation effect while preventing water vapor from entering the PTC heater.

[0047] The extrusion component 34 includes a telescopic plate 341 fixedly connected to the lower end of the water filter plate 33, a water storage frame 342 is provided on the side of the telescopic plate 341 close to the outside, a triangular extrusion plate 343 is fixedly connected to the side of the upper end of the water storage frame 342 close to the water filter plate 33, two support rods 344 are hinged on the upper end of the triangular extrusion plate 343, and the part of the two support rods 344 extending above the waterproof shell 14 is fixedly connected to a transmission plate 345, and the outer wall of the waterproof shell 14 is fixedly connected to The mounting block 346 has a screw rod 347 rotatably connected to the upper end of the mounting block 346, a motor 348 for driving the screw rod 347 is fixedly connected to the lower end of the mounting block 346, a lifting block 349 is threadedly connected to the screw rod 347, a mounting plate 3410 is fixedly connected to the lifting block 349, a sliding plate 3411 is slidably connected to the lower end of the mounting plate 3410 in a horizontal direction, a stopper 3412 is also fixedly connected to the lower end of the mounting plate 3410, and the sliding plate 3411 and the stopper 3412 are fixedly connected to each other. A plurality of first springs 3413 distributed in a linear array are arranged between the sliding plate 3411 and the baffle plate 3415, a swinging plate 3414 is rotatably connected to the bottom of the sliding plate 3411, a baffle plate 3415 is also fixedly connected to the lower end of the sliding plate 3411, a second spring 3416 is arranged between the swinging plate 3414 and the baffle plate 3415, one end of the swinging plate 3414 away from the sliding plate 3411 is rotatably connected to the top of the transmission plate 345, trapezoidal guide plates 3417 are fixedly connected to both sides of the sliding plate 3411, two first extension rods 3418 and two second extension rods 3419 are fixedly connected to the outer wall of the waterproof shell 14, one end of the first extension rod 3418 away from the waterproof shell 14 is rotatably connected to a guide wheel 3420 that contacts and rolls with the trapezoidal guide plate 3417, a gear 3421 is coaxially fixedly connected to the rotational connection between the water storage frame 342 and the support rod 344, and a rack 3422 meshing with the gear 3421 is fixedly connected to the second extension rod 3419.

[0048] Specifically, a limiting plate 5 is fixedly connected to the outer wall of the waterproof shell 14, and the lifting block 349 is slidably connected to the side wall of the limiting plate 5 along the vertical direction. The lifting block 349 can be limited by the limiting plate 5, so that when the screw 347 rotates, the lifting block 349 can only move in the vertical direction, thereby avoiding motion interference caused by the lifting block 349 rotating with the screw 347.

[0049] Specifically, the top wall of the waterproof shell 14 is provided with an access groove 6, and a plurality of groups of triangular sealing plates 61 distributed in a linear array are slidably connected to the inner walls on both sides of the access groove 6, and a compression spring is provided in the slot to which each triangular sealing plate 61 is slidably connected, so that the two triangular sealing plates 61 at the same position always have a tendency to approach each other, so that the triangular sealing plates 61 can seal the access groove 6 to avoid affecting the air entry efficiency when entering the waterproof shell 14 through the air inlet channel 31, thereby ensuring air circulation and heat dissipation effect on the PTC heater. At the same time, the upper and lower sides of the triangular sealing plates 61 are both inclined, so that the water storage frame 342 can smoothly enter and exit the air inlet channel 31, thereby realizing the accumulation of water after continuous squeezing of the water filter plate 33.

[0050] In order to prevent the water filter plate 33 from reducing its filtering effect on moisture in the air after long-term use, and to prevent the water filter plate 33 from being blocked, which leads to a reduction in the heat dissipation effect of the PTC heater, the present invention provides an extrusion component 34. When the water filter plate 33 filters the moisture in the air, the motor 348 drives the screw rod 347 to rotate, thereby driving the lifting block 349 and the mounting plate 3410 to perform reciprocating vertical displacement. When the mounting plate 3410 moves from bottom to top, the swing plate 3414 first swings from a state with a larger inclination angle to a state with a smaller inclination angle under the elastic force of the second spring 3416, thereby driving the transmission plate 345, the water storage frame 342 and the triangular extrusion plate 343 to approach the water filter plate 33 and squeeze the bottom of the water filter plate 33. Then, the mounting plate 3410 continues to move upward, and the elastic force of the second spring 3416 keeps the inclination angle of the swing plate 3414 unchanged, driving the transmission plate 345, the water storage frame 342 and The triangular extrusion plate 343 moves upward along the water filter plate 33 to store the water filtered on the water filter plate 33 into the water storage frame 342. When the mounting plate 3410 moves upward until the water storage frame 342 is completely moved out of the air inlet channel 31, the mounting plate 3410 continues to move upward, and the guide wheel 3420 squeezes and pushes the trapezoidal guide plate 3417, so that the sliding plate 3411, the transmission plate 345 and the water storage frame 342 are moved out from above the air inlet channel 31 and face the water storage cylinder 46. Subsequently, the upward movement of the mounting plate 3410 causes the gear 3421 to begin to mesh with the rack 3422, driving the water storage frame 342 to rotate and dump the accumulated water inside into the water storage cylinder 46 for storage. The water filter plate 33 can be squeezed and drained periodically to ensure the filtering effect of the water filter plate 33 on the water in the air. There is no need for the staff to manually replace the water filter plate 33 frequently, which improves work efficiency and avoids the clogging of the water filter plate 33, which causes the heat dissipation effect of the PTC heater to be reduced.

[0051] The regulating component 4 is used to detect the air humidity around the heater according to the amount of water accumulated per unit time, and to regulate the air humidity to a suitable range.

[0052] The adjusting assembly 4 is controlled by the extrusion component 34, and includes a cyclone gas-water separator 41 fixedly connected to the top wall of the waterproof shell 14, and the outer walls on both sides of the cyclone gas-water separator 41 are respectively fixedly connected with an input port 42 and an output port 43, and the input port 42 and the output port 43 are both fixedly connected with a semicircular block 44, and a semicircular adjustment plate 45 is rotatably connected in the semicircular block 44. A water storage cylinder 46 is provided above the base 1, and a bearing plate 47 is sealingly and slidably connected to the inner wall of the water storage cylinder 46, and a third spring 48 is provided between the bearing plate 47 and the inner bottom wall of the water storage cylinder 46, and an air supply pipe 49 is fixedly connected on the side wall of the water storage cylinder 46 located below the bearing plate 47, and a shunt pipe 410 is fixedly connected at one end of the air supply pipe 49 away from the water storage cylinder 46, and the shunt pipe 410 is respectively connected to the interior of the two semicircular blocks 44.

[0053] In order to adjust the humidity of the PTC heater during operation, the present invention sets an adjustment component 4. When the PTC heater is used in a bathroom, kitchen, vehicle or other environment with high humidity, the air around the working environment can be pumped in through the cyclone-type air-water separator 41, and the air can be pumped out after the water is separated, so as to reduce the humidity of the working environment and play a role in adjusting the humidity. The effect of reducing the humidity can change with the humidity of the working environment, and the specific changes are as follows:

[0054] When the humidity is relatively high, more water is accumulated in the water storage cylinder 46 per unit time, and the bearing plate 47 in the water storage cylinder 46 moves downward in the water storage cylinder 46 by gravity. More air under the bearing plate 47 in the water storage cylinder 46 is squeezed into the semicircular block 44, so that the air pressure in the semicircular block 44 is increased, and the semicircular adjustment plate 45 is pushed to rotate with respect to the semicircular block 44. The semicircular adjustment plate 45 reduces the degree of shielding of the input port 42 and the output port 43, and increases the separation efficiency of the cyclone-type air-water separator 41 on water in the air, thereby improving the effect of reducing humidity.

[0055] When the humidity is relatively low, the amount of water accumulated in the water storage cylinder 46 per unit time is small, so that the support plate 47 in the water storage cylinder 46 is located at an upper position in the water storage cylinder 46 under the action of gravity, so that the air pressure in the semicircular block 44 is small, and the rotation amplitude of the semicircular adjustment plate 45 relative to the semicircular block 44 is small, and the degree of shielding for the input port 42 and the output port 43 is large, which reduces the separation efficiency of the cyclone type air-water separator 41 for water in the air and reduces the humidity reduction effect.

[0056] In summary, the air humidity around the working environment of the PTC heater can be maintained at a relatively suitable state at all times, avoiding corrosion of metal parts (such as the heater casing) caused by excessive humidity, which affects the service life of the heater, and static electricity accumulation caused by low humidity, which interferes with the electrical equipment in the PTC heater.

[0057] The present invention can be explained by the following operation mode:

[0058] When in use, the heat dissipation effect of the PTC heater is adjusted according to the degree of heating of the working environment by the PTC heater. When the working environment temperature is low, the power of the fan is low, so that the heat dissipation performance of the fan on the PTC heater is low. When the working environment temperature is high, the thermal expansion and contraction medium expands and pushes the piston block 26 and the moving block 27 to the right, reducing the resistance of the circuit where the fan is located, thereby increasing the current and adjusting the power of the fan. When the working environment temperature is high, the heat dissipation effect of the PTC heater is correspondingly improved;

[0059] The water in the air entering the waterproof housing 14 is filtered by the water filter plate 33 to prevent the water from entering the heat dissipation housing 13, thereby combining the heat dissipation and waterproof functions.

[0060] The motor 348 is turned on to drive the screw rod 347 to rotate, thereby driving the lifting block 349 and the mounting plate 3410 to perform reciprocating vertical displacement. When the mounting plate 3410 moves from bottom to top, the triangular extrusion plate 343 approaches the water filter plate to squeeze the bottom of the water filter plate 33, and then moves upward along the water filter plate 33 to store the water filtered on the water filter plate 33 into the water storage frame 342. When the water storage frame 342 is completely moved out of the air inlet channel 31, the water storage frame 342 is moved out from the top of the air inlet channel 31 and faces the water storage cylinder 46. Then, the water storage frame 342 is driven to rotate to dump the water accumulated inside into the water storage cylinder 46 for storage. The water filter plate 33 can be periodically squeezed and drained to ensure the filtering effect of the water filter plate 33 on the water in the air.

[0061] The amount of water stored per unit time reflects the humidity of the working environment of the PTC heater. When the humidity is relatively high, the separation efficiency of the cyclone air-water separator 41 for moisture in the air is increased accordingly. When the humidity is relatively low, the separation efficiency of the cyclone air-water separator 41 for moisture in the air is reduced accordingly, so that the air humidity around the working environment of the PTC heater is always maintained at a more suitable state.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A PTC heater with a waterproof structure, It is characterized in that include: A base (1), wherein a plurality of groups of heating components are distributed in a linear array on the upper end of the base (1), wherein the heating components include a PTC heating plate (11) and a conductive sheet (12), wherein the upper end of the base (1) is fixedly connected to a heat dissipation housing (13) disposed around the heating components, and the upper end of the base (1) is fixedly connected to a waterproof housing (14) disposed around the heat dissipation housing (13); A heat dissipation component (2) is used to adjust the heat dissipation effect of the PTC heating plate (11) according to the temperature of the working environment, the heat dissipation component (2) comprising an air inlet (21) and an air outlet (22) fixedly connected to the two side walls of the heat dissipation shell (13), a fan is arranged in the air inlet (21), a control block (23) is arranged on the inner top wall of the heat dissipation shell (13), a liquid storage chamber (24) and a control chamber (25) are arranged inside the control block (23), and a piston block (25) is sealingly and slidably connected to the inner wall of the liquid storage chamber (24) 26), a moving block (27) is slidably connected to the inner wall of the control chamber (25), a space on one side of the liquid storage chamber (24) away from the moving block (27) is filled with a thermal expansion and contraction medium, a connecting rod (28) is fixedly connected between the piston block (26) and the moving block (27), a sliding rheostat driven by the connecting rod (28) is provided on the upper wall of the heat dissipation housing (13), a power supply device (29) is fixedly connected to the inner top wall of the waterproof housing (14), and the fan is connected in series with the power supply device (29) via the sliding rheostat; A waterproof component (3) is used to prevent moisture in the air from entering the heat dissipation housing (13) and causing a short circuit; The regulating component (4) is used to detect the air humidity around the heater according to the amount of water accumulated per unit time, and to regulate the air humidity within an appropriate range.

2. The PTC heater with a waterproof structure according to claim 1, It is characterized in that The sliding rheostat comprises a resistance rod (210) fixedly connected to the upper wall of the heat dissipation housing (13), a sliding sheet (211) being slidably connected to the resistance rod (210), and an L-shaped rod (212) being fixedly connected between the sliding sheet (211) and the connecting rod (28).

3. The PTC heater with a waterproof structure according to claim 1, It is characterized in that The waterproof component (3) comprises an air inlet channel (31) and an air outlet channel (32) fixedly connected to the two side walls of the waterproof housing (14); a water filter plate (33) is provided in the air inlet channel (31); a one-way valve is provided in the air outlet channel (32); and an extrusion component (34) is also provided in the air inlet channel (31) for periodically extruding the water filter plate (33) to drain water so as to ensure a waterproof effect.

4. The PTC heater with a waterproof structure according to claim 3, It is characterized in that The extrusion component (34) comprises a telescopic plate (341) fixedly connected to the lower end of the water filter plate (33); a water storage frame (342) is provided on a side of the telescopic plate (341) close to the outside; a triangular extrusion plate (343) is fixedly connected to the upper end of the water storage frame (342) close to the water filter plate (33); two support rods (344) are hingedly connected to the upper end of the triangular extrusion plate (343); portions of the two support rods (344) extending above the waterproof housing (14) are fixedly connected to a transmission plate (345); and a transmission plate (345) is fixedly connected to the outer wall of the waterproof housing (14). A mounting block (346) is provided, the upper end of the mounting block (346) is rotatably connected to a screw rod (347), the lower end of the mounting block (346) is fixedly connected to a motor (348) for driving the screw rod (347), the screw rod (347) is threadedly connected to a lifting block (349), the lifting block (349) is fixedly connected to a mounting plate (3410), the lower end of the mounting plate (3410) is slidably connected to a sliding plate (3411) in a horizontal direction, the lower end of the mounting plate (3410) is also fixedly connected to a stopper (3412), the sliding plate (341 1) and a stopper (3412) are provided with a plurality of first springs (3413) distributed in a linear array, a swing plate (3414) is rotatably connected to the bottom of the sliding plate (3411), a baffle (3415) is fixedly connected to the lower end of the sliding plate (3411), a second spring (3416) is provided between the swing plate (3414) and the baffle (3415), one end of the swing plate (3414) away from the sliding plate (3411) is rotatably connected to the top of the transmission plate (345), and both sides of the sliding plate (3411) are fixedly connected to trapezoidal guides. The outer wall of the waterproof housing (14) is fixedly connected to two first extension rods (3418) and two second extension rods (3419); one end of the first extension rod (3418) away from the waterproof housing (14) is rotatably connected to a guide wheel (3420) that contacts and rolls with the trapezoidal guide plate (3417); a gear (3421) is coaxially fixedly connected to the rotational connection between the water storage frame (342) and the support rod (344); and a rack (3422) that meshes with the gear (3421) is fixedly connected to the second extension rod (3419).

5. The PTC heater with waterproof structure according to claim 4, It is characterized in that A limiting plate (5) is fixedly connected to the outer wall of the waterproof housing (14), and the lifting block (349) is slidably connected to the side wall of the limiting plate (5) in a vertical direction.

6. The PTC heater with a waterproof structure according to claim 4, It is characterized in that The top wall of the waterproof housing (14) is provided with an access groove (6), and the inner walls on both sides of the access groove (6) are slidably connected to a plurality of groups of triangular sealing plates (61) distributed in a linear array.

7. The PTC heater with a waterproof structure according to claim 4, It is characterized in that The regulating assembly (4) is controlled by the extrusion component (34), and comprises a cyclone-type gas-water separator (41) fixedly connected to the top wall of the waterproof housing (14), an input port (42) and an output port (43) are fixedly connected on the outer walls on both sides of the cyclone-type gas-water separator (41), the input port (42) and the output port (43) are fixedly connected to each other, a semicircular stopper (44) is fixedly connected to each other on the input port (42) and the output port (43), and a semicircular regulating plate (45) is rotatably connected to each of the semicircular stoppers (44), and a water storage device is provided above the base (1). The water storage cylinder (46) has an inner wall that is sealingly and slidably connected to a bearing plate (47), a third spring (48) is provided between the bearing plate (47) and the inner bottom wall of the water storage cylinder (46), a gas delivery pipe (49) is fixedly connected to the side wall of the water storage cylinder (46) below the bearing plate (47), one end of the gas delivery pipe (49) away from the water storage cylinder (46) is fixedly connected to a shunt pipe (410), and the shunt pipe (410) is respectively connected to the interior of two semicircular stoppers (44).

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