Heat dissipation assembly

Abstract

The application discloses a heat dissipation assembly and a water heater. The heat dissipation assembly is used for heat dissipation of an electric control panel of the water heater. The heat dissipation assembly comprises a mounting portion and a pushing portion. The electric control panel is mounted in the mounting portion. In the thickness direction of the water heater, the electric control panel corresponds to the position of an air inlet of a fan. The pushing portion exerts a force on the electric control panel to move the electric control panel towards the fan and / or exerts a force on the electric control panel to move the electric control panel away from the fan under the influence of the temperature of the electric control panel. According to the application, the electric control panel is mounted by the mounting portion and opposite the air inlet of the fan. The heat of the electric control panel can be taken away by air convection. In addition, the pushing portion can exert a force on the electric control panel to move the electric control panel relative to the fan and change the distance between the electric control panel and the fan. When the electric control panel is close to the fan, the electric control panel can be fully subjected to convection heat exchange to improve the cooling effect. When the electric control panel is away from the fan, the electric control panel can be prevented from being short-circuited due to the dripping of condensed water.

Description

Technical Field

[0001] This invention relates to the field of gas water heater technology, and in particular to a heat dissipation component and a water heater. Background Technology

[0002] In a balanced flue water heater, air enters the machine through the outer layer of the exhaust pipe. Due to the sealing requirements of balanced flue water heaters, there is no air inlet / vent on the machine casing. The internal temperature of the machine is high, and the temperature of the power board components rises sharply after they start working and cannot be effectively dissipated. This causes the components to exceed their rated temperature and fail, affecting the normal use of the machine.

[0003] The internal environment temperature of the control board in a balanced flue water heater is nearly 70℃. A persistent problem is that the temperature of the components on the control board rises above 100℃ after the entire unit is running. This requires increasing the size of the heat sink on the control board or upgrading the component specifications to reduce heat generation, which increases component costs. If the control board is too close to the fan vent or the water outlet pipe, when the water heater is not running, the cold water in the pipe will condense and drip when it encounters hot air, causing a short circuit in the control board. Adding a waterproof baffle can prevent condensation from dripping into the control board, but the baffle will affect airflow and thus have some impact on heat dissipation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a heat dissipation component and a water heater.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A heat dissipation assembly is used for heat dissipation of the electronic control board of a water heater. The water heater also includes a housing and a fan, with the electronic control board and the fan both located inside the housing.

[0007] The heat dissipation assembly includes a mounting part and a pushing part. The electronic control board is installed in the mounting part, and the position of the electronic control board corresponds to the position of the air inlet of the fan in the thickness direction of the water heater. Under the influence of the temperature of the electronic control board, the pushing part applies a force to the electronic control board to move it closer to the fan and / or applies a force to move it away from the fan.

[0008] In this design, the control board is mounted via a mounting section and positioned opposite the fan's air inlet, allowing air convection to remove heat from the control board. Furthermore, a pushing section applies force to the control board, causing it to move relative to the fan and change its distance. When the control board is close to the fan, it allows for sufficient convective heat exchange, improving the cooling effect; when the control board is far from the fan, it prevents condensate from dripping onto the control board and causing a short circuit.

[0009] Preferably, the pushing part includes a first magnet, a second magnet, and an elastic member. The first magnet is disposed on the electronic control board, the second magnet is disposed on the mounting part, and the elastic member is disposed between the electronic control board and the mounting part. The first magnet and the second magnet attract each other, and the attraction force between the first magnet and the second magnet is affected by the temperature of the electronic control board.

[0010] In this design, by employing a first magnet and a second magnet whose adsorption force is affected by temperature, the electronic control board can automatically move relative to the air inlet of the fan according to the temperature. This method is simple, reliable, and easy to implement.

[0011] Preferably, when the temperature of the electronic control board exceeds a preset value, the attraction force between the first magnet and the second magnet decreases, and the electronic control board moves toward the direction of the fan.

[0012] In this solution, when the temperature of the control board rises above the preset value, the attraction force of the first and second magnets decreases, and the elastic element can push the control board closer to the fan, thereby enabling the control board to fully convect and exchange heat, and improving the cooling effect.

[0013] Preferably, the actuating part further includes a magnetizing unit, which is electrically connected to at least one of the first magnet and the second magnet, and is used to magnetize at least one of the first magnet and the second magnet.

[0014] In this design, the magnetization unit can magnetize the circuit board, thereby increasing or restoring the attraction between the first and second magnets, allowing the control board to move away from the fan. After the control board moves closer to the fan, this magnetization process allows it to return to its original position, thus protecting the control board.

[0015] Preferably, when the fan stops rotating, the magnetizing unit magnetizes at least one of the first magnet and the second magnet, the attraction force between the first magnet and the second magnet increases, and the electronic control board moves away from the fan.

[0016] In this solution, when the fan stops rotating and is in a non-operating state, the magnetizing unit can charge the magnet in time, thereby keeping the control board away from the fan and preventing it from being short-circuited by condensate dripping.

[0017] Preferably, the magnetizing unit is electrically connected to the first magnet and is used to magnetize the first magnet.

[0018] In this scheme, the power supply of the magnetization unit can be provided by the circuit on the control board, and the first magnet is also set on the magnetization unit, which facilitates the arrangement and implementation of components.

[0019] Preferably, the magnetizing unit includes a power supply, a coil, and a diode. The coil is wound around the first magnet. The power supply, the coil, and the diode are connected in series. When the fan stops rotating, the diode is turned on, and the power supply supplies power to the coil.

[0020] Preferably, the heat dissipation assembly further includes a contact switch disposed in the mounting portion. When the electronic control board moves away from the fan and comes into contact with the contact switch, the magnetization unit stops magnetizing.

[0021] In this solution, the magnetization unit can be stopped by a contact switch, thereby effectively controlling the magnetization operation.

[0022] Preferably, the first magnet is a neodymium iron boron (N-series) magnet, the second magnet is a neodymium iron boron (UH-series) magnet; and / or, the elastic element is a spring.

[0023] In this design, the first magnet is a low-coercivity NdFeB N-series magnet, which is easily demagnetized, losing its magnetism at around 80°C due to temperature rise. The second magnet is a high-coercivity NdFeB UH-system magnet, whose magnetism weakens at around 180°C. Therefore, when the temperature of the control board is too high, the attraction between the two magnets decreases, causing the control board to move towards the fan.

[0024] Preferably, the first magnet is disposed on the surface of the electronic control board facing the fan, the second magnet is disposed on the surface of the mounting portion facing away from the electronic control board, and the two ends of the spring abut against the surface of the electronic control board and the surface of the mounting portion, respectively.

[0025] Preferably, the fan is installed at the bottom of the water heater, and the electrical control board is installed at the bottom of the water heater via the mounting part; and the fan and the electrical control board are arranged facing each other in the thickness direction of the water heater.

[0026] In this solution, by adopting the above arrangement, the fan can generate stronger air intake, thereby creating a stronger convection effect and improving the heat dissipation effect.

[0027] Preferably, a combustion chamber is provided above the fan, the upper end of the mounting part is connected to the shell of the combustion chamber, and the lower end of the mounting part is connected to the bottom of the shell.

[0028] In this solution, by adopting the above method, the mounting unit and the electronic control board installed thereon can be reliably installed inside the combustion chamber.

[0029] Preferably, the upper part of the mounting part is provided with mounting feet, which are connected to the housing of the combustion chamber of the water heater. The lower side wall of the mounting part is provided with mounting posts, which are connected to the bottom wall of the housing of the water heater by fasteners.

[0030] Preferably, in the width direction of the water heater, at least one of the opposite sides of the mounting portion is provided with a main air inlet channel;

[0031] And / or, in the thickness direction of the water heater, the mounting portion is provided with an auxiliary air inlet channel.

[0032] In this solution, a main air intake channel and / or an auxiliary air intake channel are provided on the mounting section, which allows air to enter the mounting section to dissipate heat from the electronic control board, thereby improving the heat dissipation effect.

[0033] Preferably, the wall of the mounting part is also provided with a wiring harness hole, and the position of the wiring harness hole is offset from that of the fan in the height direction of the water heater.

[0034] In this solution, by setting a wire harness hole, the position of the wire harness can be restricted through the wire harness hole, preventing the wire harness from being rolled into the air inlet and blocking the fan, thereby preventing abnormal operation of the fan.

[0035] Preferably, the mounting part is further provided with a limiting member, which is used to limit the position of the electrical control board moving towards the fan.

[0036] A water heater comprising the heat dissipation components as described above.

[0037] The positive advantages of this invention are as follows: the control board is mounted via the mounting part and faces the air inlet of the fan, allowing air convection to remove heat from the control board. Furthermore, the pushing part applies force to the control board, causing it to move relative to the fan and change the distance between them. Therefore, when the control board is close to the fan, it allows for sufficient convective heat exchange, improving the cooling effect; when the control board is far from the fan, it prevents condensate from dripping onto the control board and causing a short circuit. Attached Figure Description

[0038] Figure 1This is a schematic diagram of the internal structure of a water heater provided in an embodiment of the present invention, wherein part of the outer shell of the water heater has been removed to reveal the internal structure.

[0039] Figure 2 This is a cross-sectional schematic diagram of a heat dissipation component provided in an embodiment of the present invention, wherein the electronic control board is disposed inside the heat dissipation component and is in the initial position.

[0040] Figure 3 for Figure 2 A cross-sectional view of another state of the heat dissipation component, in which the electronic control board is located near the air inlet of the fan.

[0041] Figure 4 This is a schematic diagram of the structure of an installation part provided in an embodiment of the present invention.

[0042] Figure 5 This is a schematic diagram of the structure of a magnetizing unit provided in an embodiment of the present invention.

[0043] Figure 6 This is a schematic diagram of the magnetization control process of a magnetization unit provided in an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures

[0045] Water heater 1, air inlet channel 10, air outlet channel 20, outer shell 30, fan 40, combustion chamber 50, shell 51, water outlet pipe 60, electrical control board 70, heat dissipation assembly 80, mounting part 100, panel 110, through hole 111, left side wall 120, right side wall 130, wire harness hole 131, upper side wall 140, lower side wall 150, mounting feet 160, mounting post 170, limiting member 180, pushing part 200, first magnet 210, second magnet 220, elastic member 230, magnetizing unit 240, power supply 241, diode 242, contact switch 300, width direction W, height direction H, thickness direction D, main air inlet channel M, auxiliary air inlet channel F. Detailed Implementation

[0046] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0047] This invention provides a heat dissipation component 80, such as... Figure 1As shown, the heat dissipation component 80 is used for heat dissipation of the electronic control board 70 of the water heater 1. The water heater 1 also includes a housing 30 and a fan 40, both of which are located inside the housing 30. Specifically, the electronic control board 70 can be the control board of the water heater 1, and the fan 40 is the air intake fan 40 of the water heater 1 in the prior art, which can draw air into the water heater 1 for combustion. The fan 40 includes an air inlet and an air outlet, and the air outlet can communicate with the combustion chamber 50 of the water heater 1. Air enters the fan 40 through the air inlet and flows into the combustion chamber 50 from the air outlet.

[0048] like Figures 1-5 As shown, the heat dissipation assembly 80 includes a mounting portion 100 and a pushing portion 200. An electronic control board 70 is mounted within the mounting portion 100, and its position corresponds to the air inlet of the fan 40 along the thickness direction D of the water heater 1. Under the influence of the temperature of the electronic control board 70, the pushing portion 200 applies a force to the electronic control board 70, moving it closer to the fan 40 and / or a force away from the fan 40. The electronic control board 70 is mounted via the mounting portion 100 and faces the air inlet of the fan 40, allowing air convection to remove heat from the electronic control board 70. Furthermore, the pusher 200 can apply a force to the control board 70, causing the control board 70 to move relative to the fan 40 and change the distance between them. When the control board 70 is close to the fan 40, it can achieve sufficient convective heat transfer and improve the cooling effect. When the control board 70 is far away from the fan 40, it can prevent condensate from dripping into the control board 70 and causing a short circuit.

[0049] like Figure 1 As shown, the fan 40 is installed at the bottom of the water heater 1, and the control board 70 is installed at the bottom of the water heater 1 via the mounting part 100; and the fan 40 and the control board 70 are arranged facing each other in the thickness direction D of the water heater 1. The fan 40 can generate stronger air intake, thereby forming a stronger convection effect and improving the heat dissipation effect. Specifically, the water heater 1 is a balanced flue water heater 1. The air intake channel 10 and the air outlet channel 20 of the water heater 1 are both located at the top of the water heater 1. The air intake channel 10 is arranged around the air outlet channel 20. The fan 40 is installed at the bottom of the water heater 1. Air enters from the air intake channel 10 at the top and flows towards the air inlet of the fan 40 at the bottom. The control board 70 is located in front of the air inlet and on the air intake channel. In this arrangement, the air flow path is longer, and the control board 70 can also be located on the air flow path, thereby forming stronger air convection and improving the heat dissipation effect.

[0050] like Figure 1As shown, a combustion chamber 50 is located above the fan 40. The upper end of the mounting part 100 is connected to the housing 51 of the combustion chamber 50, and the lower end of the mounting part 100 is connected to the bottom of the outer casing 30. The mounting part 100 and the electrical control board 70 mounted thereon can be reliably installed inside the combustion chamber 50. Specifically, in the balanced flue water heater 1, the outer casing 30 is usually a basically closed structure, and its internal space is used to install functional components such as the combustion chamber 50 and the fan 40 of the water heater 1. The aforementioned air inlet channel 10 and air outlet channel 20 are provided on the top plate of the outer casing 30. The mounting part 100 can be connected to the housing 51 of the combustion chamber 50 and the outer casing 30 of the water heater 1.

[0051] In specific implementations, the actuating unit 200 can take various forms, such as detecting temperature using a temperature sensor and using a drive rod to move the electronic control board 70 based on the detection result. In this embodiment, the actuating unit 200 is provided in the form of a first magnet 210, a second magnet 220, and an elastic member 230, but the scope of protection should not be limited to the following embodiments.

[0052] like Figure 2 and Figure 3 As shown, a first magnet 210 is disposed on the electronic control board 70, a second magnet 220 is disposed on the mounting part 100, and an elastic member 230 is disposed between the electronic control board 70 and the mounting part 100. The first magnet 210 and the second magnet 220 attract each other, and the attraction force between the first magnet 210 and the second magnet 220 is affected by the temperature of the electronic control board 70. By using a first magnet 210 and a second magnet whose attraction force is affected by temperature, the electronic control board 70 can automatically move relative to the air inlet of the fan 40 according to the temperature. This method has a simple and reliable structure and is easy to implement.

[0053] In specific implementation, such as Figure 2 As shown, in the initial state, the control board 70 can be in the initial position, in which the control board 70 is closer to the mounting portion 100, and the receiving chamber of the mounting portion 100 can protect the control board 70. Figure 3 As shown, when the temperature of the control board 70 exceeds the preset value, the attraction force between the first magnet 210 and the second magnet 220 decreases, and the elastic member 230 applies a force to the control board 70, causing it to move closer to the fan 40. This allows the control board 70 to fully convect and exchange heat, improving the cooling effect. The preset value can be configured according to actual conditions so that the pushing unit 200 can promptly push the control board 70 to cool down.

[0054] When the fan 40 stops rotating, the water heater 1 is in a non-operating state. At this time, the water heater 1 does not heat water, and the water temperature in the water pipes drops. Figure 1As shown, there is a water outlet pipe 60 between the fan 40 and the control board 70. Hot air easily condenses into water droplets when it encounters the relatively cool water outlet pipe 60. The higher the humidity, the more water droplets there are. If these droplets drip into the control board 70, they will cause a short circuit, so the control board 70 needs to be reset. When the first magnet 210 and the second magnet 220 are magnets, the decrease in the attraction between them is achieved through demagnetization. The magnetization unit 240 can restore the magnetic force, allowing the control board 70 to reset.

[0055] like Figure 5 As shown, the pushing unit 200 also includes a magnetizing unit 240, which is electrically connected to at least one of the first magnet 210 and the second magnet 220, and is used to magnetize at least one of the first magnet 210 and the second magnet 220.

[0056] Specifically, when the fan 40 stops rotating, the magnetizing unit 240 magnetizes at least one of the first magnet 210 and the second magnet 220, increasing the attraction between the first magnet 210 and the second magnet, causing the electronic control board 70 to move away from the fan 40. When the fan 40 is stopped and in a non-operating state, the magnetizing unit 240 can charge the magnets in a timely manner, thereby allowing the electronic control board 70 to move away from the fan 40 and avoid short circuits caused by condensate dripping. Figure 2 and Figure 3 As shown, when water heater 1 is running and the control board 70 needs to cool down, from Figure 2 Move to the initial position Figure 3 When the water heater 1 is not in operation, this magnetization process restores the attraction between the two magnets, allowing the control board 70 to... Figure 3 The position was restored to Figure 2 The position allows for protection of the electronic control board 70.

[0057] In practical implementation, the magnetizing unit 240 can magnetize one or both of the first magnet 210 and the second magnet 220 as needed, thereby restoring the attraction between them. The specific selection may be influenced by the materials used for the first magnet 210 and the second magnet 220. Preferably, the magnetizing unit 240 is electrically connected to the first magnet 210 and is used to magnetize the first magnet 210. The power supply for the magnetizing unit 240 can be achieved using the circuitry on the control board 70. The first magnet 210 is also mounted on the magnetizing unit 240, which facilitates the arrangement and implementation of components.

[0058] As one specific implementation of the magnetization unit 240, such as Figure 5As shown, the magnetizing unit 240 includes a power supply 241, a coil (not shown in the figure) and a diode 242. The coil is wound around the first magnet 210. The power supply 241, the coil and the diode 242 are connected in series. When the fan 40 stops rotating, the diode 242 is turned on and the power supply 241 supplies power to the coil.

[0059] In practical implementation, power supply 241 can utilize the output current from control board 70. Specifically, control board 70 can output positive current, such as... Figure 5 The arrow in the diagram indicates the current I. When the control board 70 outputs a forward current, diode 242 conducts, thereby magnetizing the first magnet 210. The control board 70 can also output a reverse current, which is opposite in direction to the forward current. When this reverse current is present in the circuit, the diode is cut off, the circuit is broken, and there is no current in the coil.

[0060] Furthermore, such as Figure 2 and Figure 3 As shown, the heat dissipation assembly 80 also includes a contact switch 300, which is disposed in the mounting portion 100. When the control board 70 moves away from the fan 40 and contacts the contact switch 300, the power supply 241 stops supplying power to the coil, and the magnetizing unit 240 stops magnetizing. The contact switch 300 can stop the magnetizing unit 240 from magnetizing, thereby effectively controlling the magnetizing operation. Specifically, multiple contact switches 300 are spaced apart on the upper and lower sides of the mounting portion 100 to improve the accuracy of detection.

[0061] As one specific embodiment of the magnet, the first magnet 210 is a neodymium iron boron (N-series) magnet, and the second magnet 220 is a neodymium iron boron (UH-series) magnet; and / or, the elastic element 230 is a spring. The first magnet 210 is a low-coercivity neodymium iron boron (N-series) magnet, which is easily demagnetized, and its magnetism demagnetizes at around 80°C due to temperature rise; the second magnet 220 is a high-coercivity neodymium iron boron (UH-series) magnet, and its magnetism weakens at around 180°C. Therefore, when the temperature of the control board 70 is too high, the attraction force between the two magnets decreases, causing the control board 70 to move towards the fan 40.

[0062] In specific implementation, such as Figure 2As shown, the NdFeB N-series magnets and NdFeB UH-system magnets are in a state of attraction between opposite poles, and the spring is in a compressed state. When the water heater 1 is under high load combustion, the radiant heat from combustion is generated inside the machine, and the components on the control board 70 generate heat, causing the temperature of the control board 70 to rise. Experimental tests show that the temperature of the control board 70 is approximately 85℃ under full load operation. The NdFeB N-series magnets have low coercivity and are easily demagnetized; their magnetism demagnetizes at around 80℃ due to the temperature increase. The NdFeB UH-series magnets have high coercivity and their magnetism weakens at around 180℃. Due to the increased temperature, the magnetism of the first magnet 210 weakens, and the attraction between it and the second magnet 220 decreases. At this time, the spring overcomes the attraction between the magnets and moves the control board 70 towards the air inlet of the fan 40. The closer the control board 70 is to the fan 40 inlet, the stronger the air convection, the faster the heat dissipation, and the lower the temperature rise of the control board 70. By weakening the magnetism of the magnet due to the high ambient temperature, the spring automatically adjusts to reduce the distance between the control board 70 and the fan 40, thereby achieving full convective heat exchange on the control board 70 and thus cooling down.

[0063] In a specific implementation, the first magnet 210 is mounted on the electronic control board 70, and the magnetizing unit 240 can also be integrated on the electronic control board 70. Furthermore, by mounting a program on the electronic control board 70 to determine whether the water heater 1 is in a non-operating state, the magnetizing unit 240 is controlled to magnetize the first magnet 210 when the water heater 1 is in a non-operating state, so that the attraction force between the first magnet 210 and the second magnet 220 is restored to overcome the spring force, thereby resetting the electronic control board 70.

[0064] like Figure 5 and Figure 6 As shown, when the fan 40 stops rotating, the control board 70 program determines that the water heater 1 is in a non-operating state. At this time, the first magnet 210 is demagnetized at high temperature. After the temperature drops, the magnetism irreversibly recovers, so the first magnet 210 needs to be remagnetized. A coil is wound around the first magnet 210, and the control board 70 program outputs current to remagnetize the first magnet 210. The magnetism of the first magnet 210 is restored, and the attraction force increases, overcoming the spring force and pushing the control board 70 away from the fan 40. The control board 70 is moved away from the water outlet pipe 60, avoiding the risk of short circuit. After the control board 70 resets, it contacts the contact switch 300 on the mounting part 100. The control board 70 program receives the reset signal, stops the coil current output, and the magnetization is complete.

[0065] In specific implementations, the arrangement of the first magnet 210 and the second magnet 220 on the mounting part 100 and the electronic control board 70 can have various embodiments, and the structural form of the mounting part 100 can also have various embodiments depending on the requirements, such as... Figures 1-4 As shown, a feasible implementation method will be provided below, but the scope of protection should not be limited to the following implementation method.

[0066] like Figure 2 and Figure 3 As shown, the first magnet 210 is disposed on the surface of the control board 70 facing the fan 40, and the second magnet 220 is disposed on the surface of the mounting portion 100 away from the control board 70. The two ends of the spring abut against the surface of the control board 70 and the surface of the mounting portion 100, respectively. Specifically, the control board 70 is disposed in the receiving cavity of the mounting portion 100 and moves left and right within the receiving cavity. The spring can be connected to the control board 70 by welding.

[0067] like Figures 1-4 As shown, the mounting part 100 includes a panel 110, a left side wall 120, a right side wall 130, an upper side wall 140, and a lower side wall 150. The left side wall 120, right side wall 130, upper side wall 140, and lower side wall 150 are respectively connected to the four edges of the panel 110, forming a receiving chamber that opens toward the fan 40. An electronic control board 70 is disposed in the receiving chamber, and the electronic control board 70 is arranged substantially parallel to the panel 110. The two ends of the spring abut against the inner surface of the electronic control board 70 and the inner surface of the panel 110, respectively. A first magnet 210 is disposed on the outer surface of the electronic control board 70, and a second magnet 220 is disposed on the outer surface of the panel 110. Figure 1 As shown, the outer surface of the panel 110 is provided with multiple grooves, and the second magnet 220 can be embedded in the grooves.

[0068] like Figure 2 , Figure 3 and Figure 4 As shown, the upper part of the mounting portion 100 is provided with mounting feet 160, which are connected to the housing 51 of the combustion chamber 50 of the water heater 1. The lower side wall 150 of the mounting portion 100 is provided with mounting posts 170, which are connected to the bottom wall of the housing 30 of the water heater 1 by fasteners. Specifically, the mounting feet 160 are connected to the upper part of the outer surface of the panel 110 and extend towards the housing 51 of the combustion chamber 50, and can be fixedly connected to the housing 51 of the combustion chamber 50 by fasteners. Two mounting feet 160 are spaced apart on the upper part of the outer surface of the panel 110. The mounting posts 170 are provided on the lower side wall 150, and fasteners can pass through the bottom wall of the housing 30 of the water heater 1 and connect to the mounting posts 170. Two mounting posts 170 are spaced apart on the lower side wall 150.

[0069] like Figure 1 As shown, in the width direction W of the water heater 1, at least one of the opposite sides of the mounting portion 100 is provided with a main air intake channel M; and / or, in the thickness direction D of the water heater 1, the mounting portion 100 is provided with an auxiliary air intake channel F. Providing the main air intake channel M and / or the auxiliary air intake channel F on the mounting portion 100 allows air to enter the mounting portion 100 to dissipate heat from the electronic control board 70, improving the heat dissipation effect. Specifically, as... Figure 1As shown, the mounting section 100 has a receiving chamber that opens towards the fan 40. Airflow can enter the receiving chamber from the side of the mounting section 100 and form a main air intake channel M to convectively cool the electronic control board 70. Figure 1 and Figure 4 As shown, the panel 110 is provided with a plurality of through holes 111, through which airflow can enter the receiving cavity and form an auxiliary airflow channel F to cool the electronic control board 70.

[0070] like Figure 2 and Figure 3 As shown, the wall of the mounting part 100 is also provided with a wire harness hole 131. In the height direction H of the water heater 1, the position of the wire harness hole 131 is offset from that of the fan 40. By providing the wire harness hole 131, the position of the wire harness can be restricted through the wire harness hole 131, preventing the wire harness from being rolled into the air inlet and blocking the fan 40, thereby preventing the fan 40 from operating abnormally.

[0071] like Figure 2 and Figure 3 As shown, the mounting section 100 also includes a limiting member 180, which restricts the movement of the control board 70 towards the fan 40. The upper limit structure of the control board 70 restricts the minimum distance between the control board 70 and the fan 40 inlet, preventing the wiring harness from blocking the fan 40's air inlet. Specifically, the limiting member 180 may be a protrusion extending from the left side wall 120 and / or the right side wall 130 into the receiving chamber. Figure 2 and Figure 3 As shown, the limiting member 180 is disposed above the wire harness hole 131, and preferably has multiple members. In the thickness direction D of the water heater 1, the limiting member 180 is flush with the inner edge of the wire harness hole 131, thereby preventing the control board 70 from moving to a position that coincides with the wire harness hole 131.

[0072] This invention also provides a water heater 1, which includes the heat dissipation component 80 as described above.

[0073] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A heat dissipation component, characterized in that, The heat dissipation component is used for heat dissipation of the water heater's electronic control board. The water heater also includes a housing and a fan, with the electronic control board and the fan both located inside the housing. The heat dissipation assembly includes a mounting part and a pushing part. The electronic control board is installed in the mounting part, and the position of the electronic control board corresponds to the position of the air inlet of the fan in the thickness direction of the water heater. Under the influence of the temperature of the electronic control board, the pushing part applies a force to the electronic control board to move it closer to the fan and / or applies a force to move it away from the fan.

2. The heat dissipation assembly as described in claim 1, characterized in that, The pushing part includes a first magnet, a second magnet, and an elastic element. The first magnet is disposed on the electronic control board, the second magnet is disposed on the mounting part, and the elastic element is disposed between the electronic control board and the mounting part. The first magnet and the second magnet attract each other, and the attraction force between the first magnet and the second magnet is affected by the temperature of the electronic control board.

3. The heat dissipation assembly as described in claim 2, characterized in that, When the temperature of the electronic control board exceeds the preset value, the attraction force between the first magnet and the second magnet decreases, and the electronic control board moves towards the fan.

4. The heat dissipation assembly as described in claim 2, characterized in that, The pushing part further includes a magnetizing unit, which is electrically connected to at least one of the first magnet and the second magnet, and is used to magnetize at least one of the first magnet and the second magnet.

5. The heat dissipation assembly as described in claim 4, characterized in that, When the fan stops rotating, the magnetizing unit magnetizes at least one of the first magnet and the second magnet, the attraction between the first magnet and the second magnet increases, and the electronic control board moves away from the fan.

6. The heat dissipation assembly as described in claim 5, characterized in that, The magnetizing unit is electrically connected to the first magnet and is used to magnetize the first magnet.

7. The heat dissipation assembly as described in claim 4, characterized in that, The magnetizing unit includes a power supply, a coil, and a diode. The coil is wound around the first magnet. The power supply, the coil, and the diode are connected in series. When the fan stops rotating, the diode is turned on, and the power supply supplies power to the coil.

8. The heat dissipation assembly as described in claim 5, characterized in that, The heat dissipation assembly also includes a contact switch, which is disposed in the mounting part. When the electronic control board moves away from the fan and comes into contact with the contact switch, the magnetization unit stops magnetizing.

9. The heat dissipation component as described in any one of claims 2-8, characterized in that, The first magnet is a neodymium iron boron (N-series) magnet, and the second magnet is a neodymium iron boron (UH-series) magnet; And / or, the elastic element is a spring.

10. The heat dissipation assembly as described in claim 9, characterized in that, The first magnet is disposed on the surface of the electronic control board facing the fan, the second magnet is disposed on the surface of the mounting part away from the electronic control board, and the two ends of the spring abut against the surface of the electronic control board and the surface of the mounting part, respectively.

11. The heat dissipation assembly as claimed in claim 1, characterized in that, The fan is installed at the bottom of the water heater, and the electrical control board is installed at the bottom of the water heater through the mounting part; and the fan and the electrical control board are arranged facing each other in the thickness direction of the water heater.

12. The heat dissipation assembly as described in claim 11, characterized in that, A combustion chamber is provided above the fan. The upper end of the mounting part is connected to the shell of the combustion chamber, and the lower end of the mounting part is connected to the bottom of the shell.

13. The heat dissipation assembly as described in claim 12, characterized in that, The upper part of the mounting part is provided with mounting feet, which are connected to the housing of the combustion chamber of the water heater. The lower side wall of the mounting part is provided with mounting posts, which are connected to the bottom wall of the housing of the water heater by fasteners.

14. The heat dissipation assembly as claimed in claim 1, characterized in that, In the width direction of the water heater, at least one of the opposite sides of the mounting portion is provided with a main air inlet channel; And / or, in the thickness direction of the water heater, the mounting portion is provided with an auxiliary air inlet channel.

15. The heat dissipation assembly as claimed in claim 1, characterized in that, The wall of the mounting part is also provided with a wire harness hole, and the position of the wire harness hole is offset from that of the fan in the height direction of the water heater; And / or, the mounting part is further provided with a limiting member, which is used to limit the position of the electrical control board moving towards the fan.

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