A magnetic sensitive thermostat

Abstract

The present invention discloses a magnetic sensitive thermostat, comprising a shell, a first magnet assembly, a second magnet assembly, and a push rod; the first magnet assembly and the second magnet assembly are sleeved on the push rod, an external spring is provided between the first magnet assembly and the second magnet assembly, and the first magnet assembly and the second magnet assembly can produce magnetic force; a sealing assembly for blocking a water outlet is provided in the shell, and the first magnet assembly and the second magnet assembly will eliminate the magnetic force at a preset temperature, so that the push rod drives the sealing assembly to release the blockage of the water outlet. The magnetic sensitive thermostat provided by the present invention has the following advantages compared with the existing wax thermostat: 1. The manufacturing process is simple and the control method is simple; 2. The temperature sensing principle of the thermosensitive soft magnet is used to achieve the effect of precise temperature control, and the sensitivity is high; 3. The risk of paraffin leakage is fundamentally eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of thermal energy control, and in particular to a magnetic sensitive thermostat. Background Art

[0002] The car thermostat assembly is an indispensable part of the car engine cooling system. In the car cooling system, the coolant flows through the large or small circulation by opening and closing the thermostat, ultimately achieving the purpose of rapid engine heating in cold weather or rapid engine heat dissipation in hot weather.

[0003] At present, the thermostats used in automobile engines are generally wax thermostats. The structural principle is that when the cooling temperature is lower than the specified value, the thermostat temperature sensor is solid, and the thermostat housing is in a closed state under the action of the spring. When the coolant temperature reaches the specified value, the paraffin begins to melt and gradually becomes liquid, and the volume begins to increase and compress the rubber tube to shrink. While the rubber tube shrinks, it acts on the push rod to exert an upward force. The push rod has a downward reverse thrust on the housing to open the valve, and the coolant flows through and enters the cooling cycle.

[0004] The above-mentioned wax thermostat has the following problems: 1. The structure is complex and the manufacturing process requirements are high; 2. The wax in the wax thermostat often leaks. If the amount of wax leakage is small, the thermostat is not open enough, the water temperature continues to rise, and the engine will eventually overheat. If the wax leakage is too much, the thermostat will always be in a closed state, the engine will overheat, and in severe cases, the engine will burn out.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a magnetic sensitive thermostat which is easy to manufacture and has a simple control method, aiming to overcome the defect of paraffin leakage in the wax thermostat.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A magnetic thermostat comprises a shell with a water inlet and a water outlet, a first magnet assembly fixedly arranged on the shell, a second magnet assembly arranged outside the shell, and a push rod movable relative to the shell; the first magnet assembly and the second magnet assembly are sleeved on the push rod, an external spring is arranged between the first magnet assembly and the second magnet assembly, and the first magnet assembly and the second magnet assembly can produce magnetic force; a sealing assembly for blocking the water outlet is arranged in the shell, and the first magnet assembly and the second magnet assembly can eliminate the magnetic force at a preset temperature, so that the push rod drives the sealing assembly to release the blockage of the water outlet.

[0009] The first magnet assembly includes a bracket and a first magnet arranged on the bracket. A flow channel for coolant to flow into the inner cavity of the shell is provided on the top of the first magnet. A first through hole for a push rod to pass through is provided on the first magnet.

[0010] The first magnet is a thermosensitive soft magnet, the bracket is provided with a positioning step for installing the first magnet, the middle of the bracket is provided with an avoidance hole, the bottom of the first magnet is provided with an attraction part, the attraction part passes through the avoidance hole; the bottom surface height of the attraction part is lower than the bottom surface height of the bracket.

[0011] The second magnet assembly includes a base and a second magnet arranged on the base, the second magnet is a hard magnet, the second magnet is fixed to the base through a sleeve, the inner cavity of the sleeve is provided with a convex column, the second magnet is sleeved on the convex column, and the convex column is provided with a second through hole for the push rod to pass through.

[0012] A plurality of buckling convex edges are arranged on the side wall of the bottom end of the sleeve body, a corresponding clamping block is arranged on the bottom bracket, and the sleeve body and the bottom bracket are buckled and connected via the buckling convex edges and the clamping block.

[0013] The sealing assembly includes an inner spring and a sealing block. The bottom of the sealing block is provided with an installation cavity. The bottom end of the inner spring is pressed against the top of the first magnet, and the top end of the inner spring is stuck in the installation cavity. The sealing block is also provided with a third through hole for the push rod to pass through.

[0014] The push rod includes a rod body, a positioning ring arranged at the bottom of the rod body, a first clamping ring opened on the rod body, and a first clamping ring clamped into the first clamping ring. The bottom of the rod body is provided with a positioning ring, the first clamping ring is located below the positioning ring, the base is provided with a fourth through hole for the push rod to pass through, and the base is fixed between the positioning ring and the first clamping ring.

[0015] The push rod also includes a second clamping groove opened on the rod body and a second clamping ring clamped into the second clamping groove, the second clamping ring is arranged in the inner cavity of the shell and located above the sealing block; the second clamping ring is used to push the sealing block to compress the inner spring.

[0016] The water outlet is opened at the top of the shell, and a limiting protrusion is set on the top of the shell. A fifth through hole is opened on the limiting protrusion for the push rod to pass through. A third clamping groove is set on the top of the rod body, and a third clamping ring is clamped in the third clamping groove. The third clamping ring is located above the limiting protrusion.

[0017] At least two connecting ears are fixedly connected to the outer edge of the bracket, and the bottom of the shell is provided with fixing columns that are equal to and correspond to the connecting ears in number, each connecting ear is respectively provided with a first threaded hole, and each fixing column is respectively provided with a second threaded hole, a screw is screwed into the first threaded hole of each connecting ear, and the free end of each screw is screwed into the second threaded hole of the corresponding fixing column.

[0018] Beneficial effects:

[0019] The present invention provides a magnetic sensitive thermostat. Compared with the existing thermostat, the switch of the thermostat is controlled by utilizing the characteristic that the ferromagnetism of the thermosensitive magnetic material is changed by temperature. When the temperature of the coolant is lower than the preset temperature value, the first magnet assembly and the second magnet assembly are attracted together by magnetic force, the outer spring is in a compressed state, and the sealing assembly blocks the connection between the water outlet and the water inlet. When the temperature of the coolant reaches the preset temperature value, the first magnet assembly and the second magnet assembly lose the attraction force. Under the action of the outer spring, the second magnet assembly drives the push rod to move, and the push rod drives the sealing assembly to release the blockage of the water outlet. Thus, the switch of the magnetic sensitive thermostat is automatically controlled according to the temperature of the coolant. It can be seen that the magnetic sensitive thermostat provided by the present invention has the following advantages compared with the existing wax thermostat: 1. The manufacturing process is simple and the control method is simple; 2. The temperature sensing principle of the thermosensitive soft magnet is used to achieve the effect of accurate temperature control, and the sensitivity is high; 3. The risk of paraffin leakage is fundamentally eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the magnetic sensitive thermostat provided by the present invention.

[0021] Figure 2 This is an exploded view of the magnetic sensitive thermostat provided by the present invention.

[0022] Figure 3 A schematic diagram of the internal structure of the magnetic sensitive thermostat provided by the invention in the closed state.

[0023] Figure 4 A schematic diagram of the internal structure of the magnetic sensitive thermostat provided by the invention when it is in the open state.

[0024] Figure 5 This is a front view of the magnetic sensitive thermostat provided by the present invention.

[0025] Explanation of the main component symbols: 1-housing, 4-push rod, 5-outer spring, 11-mounting ring, 12-fixing hole, 13-fixing column, 21-bracket, 22-first magnet, 23-flow channel, 24-positioning step, 25-avoidance hole, 26-suction part, 27-connecting ear, 31-bottom support, 32-second magnet, 33-sleeve, 34-convex column, 36-buckle flange, 37-block, 6-sealing assembly, 61-inner spring, 62-sealing block, 41-first slot, 42-second slot, 43-third slot, 71-first snap ring, 72-second snap ring, 73-third snap ring, 74-positioning ring, 81-water outlet, 82-water inlet, 9-limiting protrusion, 91-first through hole, 92-second through hole, 93-third through hole, 94-fourth through hole, 95-fifth through hole. DETAILED DESCRIPTION

[0026] The present invention provides a magnetic sensitive thermostat. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 The present invention provides a magnetic thermostat, comprising a shell 1 having a water inlet 82 and a water outlet 81, a first magnet assembly 2 fixedly arranged on the shell 1, a second magnet assembly 3 arranged outside the shell 1, and a push rod 4 movable relative to the shell 1; the first magnet assembly 2 and the second magnet assembly 3 are sleeved on the push rod 4, an external spring 5 is provided between the first magnet assembly 2 and the second magnet assembly 3, and the first magnet assembly 2 and the second magnet assembly 3 can generate magnetic force; a sealing assembly 6 for blocking the water outlet 81 is provided in the shell 1, and the first magnet assembly 2 and the second magnet assembly 3 will eliminate the magnetic force at a preset temperature, so that the push rod 4 drives the sealing assembly 6 to release the blocking of the water outlet 81.

[0028] In actual use, the magnetic thermostat will be installed in a shell to form a thermostat assembly. The shell of the thermostat assembly is provided with a circulation cavity, a water outlet pipe, a large circulation water inlet pipe and a small circulation water inlet pipe. The shell 1 can be designed as a boss shape according to production needs. At least two mounting ears 11 are integrally formed on the shell 1, and each mounting ear 11 is respectively provided with a fixing hole 12. The magnetic thermostat is arranged in the circulation cavity, and the magnetic thermostat is fixed to the large circulation water inlet pipe interface of the thermostat assembly shell through the mounting ears.

[0029] The working principle is briefly described as follows: when the engine is working, the coolant enters the circulation cavity from the water outlet pipe. Since one of the first magnet assembly 2 or the second magnet assembly 3 is provided with a thermosensitive soft magnet and the other magnet assembly is provided with a hard magnet, if the engine temperature is not high at this time, the temperature of the coolant is lower than the preset temperature value, that is, lower than the Curie temperature of the thermosensitive soft magnet, the first magnet assembly 2 and the second magnet assembly 3 are attracted together by magnetic force, the outer spring 5 is in a compressed state, and the sealing assembly 6 blocks the connection between the water outlet 81 and the water inlet 82; at this time, the magnetic thermostat is in a closed state, see Figure 3 As shown. The coolant cannot flow into the large circulation water inlet pipe, but can only flow into the small circulation water inlet pipe, so that the engine heats up quickly.

[0030] When the temperature of the coolant reaches a preset temperature value, that is, reaches the Curie temperature of the thermosensitive soft magnetic body, the thermosensitive soft magnetic body loses its magnetic permeability, the first magnet assembly 2 and the second magnet assembly 3 lose their attraction, and under the action of the external spring 5, the second magnet assembly 3 drives the push rod 4 to move, and the push rod 4 drives the sealing assembly 6 to release the blockage of the water outlet 81; at this time, the magnetic thermostat is in the open state, see Figure 4 The coolant can flow into the large circulation water inlet pipe to form a large circulation to dissipate heat from the engine.

[0031] When the temperature of the coolant drops below the preset temperature value, the thermosensitive soft magnet recovers its magnetic permeability, the thermosensitive soft magnet and the hard magnet automatically attract each other, and the magnetic thermostat is closed again, thereby automatically controlling the switch of the magnetic thermostat according to the temperature of the coolant.

[0032] It can be seen that the magnetic thermostat provided by the present invention has the following advantages compared with the existing wax thermostat: 1. Simple manufacturing process and simple control method; 2. Utilizing the temperature sensing principle of thermosensitive soft magnets to achieve precise temperature control effect, with high sensitivity; 3. Fundamentally eliminating the risk of paraffin leakage.

[0033] Specifically, the first magnet assembly 2 includes a bracket 21, a first magnet 22 disposed on the bracket 21, a flow channel 23 for coolant to flow into the inner cavity of the housing 1 is provided on the top of the first magnet 22, and a first through hole 91 for the push rod 4 to pass through is provided on the first magnet 22. Figure 2 and Figure 5 As shown, the flow channels 23 are provided with two and symmetrically arranged, and each flow channel 23 is semi-arc-shaped; on the one hand, the coolant enters the inner cavity of the housing 1 through the flow channel 23, and the flow channel 23 is wide, and the coolant flows smoothly without causing obstruction; on the other hand, by setting the flow channel, the material used for the thermosensitive soft magnet can be reduced, saving costs. Here, the first through hole 91 is a central through hole, and the push rod 4 is interference-fitted with the first through hole 91.

[0034] In one embodiment, the first magnet 22 is a thermosensitive soft magnet, which is mainly composed of thermosensitive metal materials and thermosensitive ferrites. The ferromagnetic material in the thermosensitive soft magnet loses ferromagnetism and becomes paramagnetic when the temperature is higher than a certain temperature (the transition temperature is the Curie temperature point). The ferromagnetic material in the thermosensitive soft magnet regains ferromagnetism when the temperature is lower than a certain temperature (the transition temperature is the Curie temperature point). When the thermosensitive soft magnet has ferromagnetism, the thermosensitive soft magnet and the hard magnet are attracted to each other under the action of magnetic force. When the thermosensitive soft magnet loses ferromagnetism, the thermosensitive soft magnet and the hard magnet cannot have magnetic attraction between the magnetic force. Those skilled in the art can adjust the proportion of materials in the thermosensitive soft magnet to set the Curie temperature point of the thermosensitive soft magnet. After the coolant enters the flow channel 23, it directly contacts the first magnet 22, so that the coolant can directly transfer heat with the first magnet 22, achieving the technical effect of precise temperature control.

[0035] In one embodiment, the bracket 21 is provided with a positioning step 24, the first magnet 22 is mounted on the positioning step 24 to achieve axial positioning, the middle of the bracket 21 is provided with an avoidance hole 25, the bottom of the first magnet 22 is provided with an attraction portion 26, the attraction portion 26 passes through the avoidance hole 25; the bottom surface height of the attraction portion 26 is lower than the bottom surface height of the bracket 21. Through such a configuration, the bottom surface of the attraction portion 26 can directly contact the second magnet assembly 3, preventing the bracket 21 and the second magnet assembly 3 from causing adhesion and interference.

[0036] In one embodiment, the second magnet assembly 3 includes a base 31 and a second magnet 32 ​​disposed on the base 31. The second magnet 32 ​​is a hard magnet, and the material of the hard magnet can be ferrite or neodymium iron boron. The second magnet 32 ​​is fixed to the base 31 through a sleeve 33. The inner cavity of the sleeve 33 is provided with a convex column 34. In order to ensure the stability of the center of gravity of the second magnet 32, the second magnet 32 ​​is set in a cylindrical shape. The second magnet 32 ​​is sleeved on the convex column 34. The sleeve 33 completely wraps the second magnet 32 ​​to achieve the positioning of the second magnet 32. In addition, a second through hole 92 for the push rod 4 to pass through is opened on the convex column 34. The second through hole 92 is the central through hole of the convex column 34, and the push rod 4 is interference fit with the second through hole 92. In order to facilitate the insertion of the push rod 4 into the second through hole 92, a chamfer is provided at the second through hole.

[0037] In one embodiment, see Figure 2 As shown, the bottom side wall of the sleeve 33 is provided with a plurality of buckle convex edges 36, and the bottom bracket 31 is provided with a corresponding clamping block 37, and the sleeve 33 and the bottom bracket 31 are buckled and connected through the buckle convex edges 36 and the clamping block 37. When assembling, the sleeve 33 only needs to be directly pressed against the upper end of the bottom bracket 31 to complete the connection, which is convenient for assembly and disassembly.

[0038] In one embodiment, see Figure 2-Figure 4 , the sealing assembly 6 includes an inner spring 61 and a sealing block 62. The bottom end of the inner spring 61 presses against the top of the first magnet 22. The bottom of the sealing block 62 is provided with an installation cavity. The bottom end of the inner spring 61 presses against the top of the first magnet 22. The top end of the inner spring 61 is stuck in the installation cavity. The sealing block 62 is also provided with a third through hole 93 for the push rod 4 to pass through. The third through hole 93 is the central through hole of the sealing block 62. The push rod 4 is interference-fitted with the third through hole 93. When the magnetic thermostat is in the closed state, the inner spring 61 applies elastic force to the sealing block 62, so that the sealing block 62 tightly plugs the water outlet 81 of the housing 1, blocking the coolant from flowing out of the water outlet 81. It should be understood that there may be a very small amount of coolant flowing out of the matching gap between the sealing block and the push rod, which does not affect the blocking effect.

[0039] In order to facilitate the fixed connection between the push rod 4 and the bottom bracket 31, please refer to Figure 2 The push rod 4 includes a rod body 40, a positioning ring 74 arranged at the bottom of the rod body 40, a first clamping groove 41 and a first clamping ring 71 clamped into the first clamping groove 41 are provided on the rod body 40; the first clamping groove 41 is located below the positioning ring 74, and the bottom bracket 31 is provided with a fourth through hole 94 for the push rod 4 to pass through. In order to make the structure more compact, the bottom bracket 31 is set in a disc shape, the bottom end of the outer spring 5 presses against the bottom surface of the inner cavity of the bottom bracket 31, and the fourth through hole 94 is also the central through hole of the bottom bracket 31. In actual assembly, after the bottom end of the push rod 4 is inserted into the fourth through hole 94, the positioning ring 74 presses against the upper surface of the bottom bracket 31, and then the first clamping ring 71 is clamped into the first clamping groove 41, so that the bottom bracket 31 is fixed between the positioning ring 74 and the first clamping ring 71, which is convenient for assembly and disassembly and reliable for fixation.

[0040] In one embodiment, in order to reduce the influence of the base 31 on the fluidity of the coolant, a plurality of flow guide grooves in a circumferential array are provided on the base 31 .

[0041] In one embodiment, in order to avoid interference between the second magnet 32 ​​and the positioning ring 74 , the middle portion of the second magnet 32 ​​is configured as a countersunk through hole 321 , and an anti-interference gap is formed between the countersunk head of the countersunk through hole and the positioning ring 74 .

[0042] In one embodiment, see Figure 2, the push rod 4 also includes a second clamping groove 42 provided on the rod body 40 and a second clamping ring 72 clamped into the second clamping groove 42, the second clamping ring 72 is arranged in the inner cavity of the housing 1 and is located above the sealing block 62; the second clamping ring 72 is used to push the sealing block 62 to compress the inner spring 61. When the magnetic thermostat is in the open state, under the action of the outer spring 5, the bottom bracket 31 drives the push rod 4 to move in the direction away from the first component, and the second clamping ring 72 also moves with the push rod 4, pushing the sealing block 62 to compress the spring downward, so that the sealing block 62 releases the blockage of the water outlet 81 of the housing 1. In order to facilitate the close contact between the second clamping ring 72 and the sealing block 62 and reduce the adhesion between the second clamping ring and the upper surface of the sealing block 62, the sealing block 62 is disc-shaped, and a circular groove 63 for accommodating the second clamping block 37 is provided in the middle thereof.

[0043] In one embodiment, see Figure 1 and Figure 2 The water outlet 81 is provided at the top of the housing 1, and a limiting protrusion 9 is provided at the top of the housing 1, and the limiting protrusion 9 is provided as a U-shaped block, and the coolant flows out from both sides of the limiting protrusion 9; a fifth through hole 95 is provided on the limiting protrusion 9 for the push rod 4 to pass through, and the fifth through hole 95 is the central through hole of the limiting protrusion 9, and the push rod 4 is interference-fitted with the fifth through hole 95, and a third clamping groove 43 is provided at the top of the rod body 40, and a third clamping ring 73 is clamped in the third clamping groove 43, and the third clamping ring 73 is located above the limiting protrusion 9. By providing the third clamping ring 73, the housing 1 is limited to move between the first clamping ring 71 and the third clamping ring 73, so as to prevent the housing 1 from being separated from the push rod 4.

[0044] In order to further ensure the clamping strength, the first clamping ring 71, the second clamping ring 72 and the third clamping ring 73 are preferably E-shaped clamping rings.

[0045] In one embodiment, see Figure 2 As shown, the outer edge of the bracket 21 is fixedly connected with at least two connecting ears 27, and the bottom of the shell 1 is provided with fixing columns 13 that are equal to and correspond to the connecting ears 27, each connecting ear 27 is provided with a first threaded hole, each fixing column 13 is provided with a second threaded hole, and a screw 29 is screwed into the first threaded hole of each connecting ear 27, and the free end of each screw is screwed into the second threaded hole of the corresponding fixing column 13 to achieve screw connection, and the bracket 21 presses the first magnet 22 against the water inlet 82 of the shell 1. Preferably, the outer edge of the bracket 21 is fixedly connected with three connecting ears 27, and the circumferential angle between any two adjacent connecting ears 27 is 120 degrees; the fixing columns 13 on the shell 1 are correspondingly provided with three; of course, three screws are provided accordingly. Such a setting improves the connection strength between the bracket 21 and the shell 1, and the first magnetic block will not tilt.

[0046] The following is a brief description of the assembly process of the magnetic thermostat: first, the bottom end of the push rod 4 is inserted into the fourth through hole 94 of the base 31, so that the positioning ring 74 is pressed against the base 31, and the first snap ring 71 is snapped into the first slot 41; the second magnet 32 ​​is sleeved in the sleeve 33, and the push rod 4 passes through the second through hole 92 of the sleeve 33, and the sleeve 33 is snap-connected with the base 31, and then the outer spring 5 is placed on the base 31; the bracket 21, the first magnet 22, the inner spring 61, and the sealing block 62 are sequentially inserted into the push rod 4, and the second snap ring 72 is snapped into the second slot 42, the push rod 4 passes through the fifth through hole 95 of the limiting protrusion 9, the housing 1 wraps the inner spring 61, the sealing block 62 and the second snap ring 72, the fixing column 13 on the housing 1 corresponds to the connecting ear 27 of the bracket 21 one by one and is screwed, and finally the third snap ring 73 is snapped into the third slot 43. It can be seen that the magnetic sensitive thermostat provided by the present invention has low assembly difficulty and low manufacturing process requirements, and can well ensure production efficiency even through manual assembly.

[0047] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A magnetic sensitive thermostat, characterized in that: The invention comprises a shell with a water inlet and a water outlet, a first magnet assembly fixedly arranged on the shell, a second magnet assembly arranged outside the shell, and a push rod movable relative to the shell; the first magnet assembly and the second magnet assembly are sleeved on the push rod, an external spring is arranged between the first magnet assembly and the second magnet assembly, and the first magnet assembly and the second magnet assembly can produce magnetic force; a sealing assembly for blocking the water outlet is arranged in the shell, and the first magnet assembly and the second magnet assembly can eliminate the magnetic force at a preset temperature, so that the push rod drives the sealing assembly to release the blockage of the water outlet; the first magnet assembly comprises a bracket, a first magnet arranged on the bracket, and the top of the first magnet A flow channel is provided for cooling liquid to flow into the inner cavity of the shell, and a first through hole is provided on the first magnet for a push rod to pass through; the first magnet is a thermosensitive soft magnet, a positioning step is provided on the bracket for installing the first magnet, a avoidance hole is provided in the middle of the bracket, a suction part is provided at the bottom of the first magnet, and the suction part passes through the avoidance hole; the bottom surface height of the suction part is lower than the bottom surface height of the bracket; the second magnet assembly includes a base and a second magnet arranged on the base, the second magnet is a hard magnet, the second magnet is fixed to the base through a sleeve, the inner cavity of the sleeve is provided with a convex column, the second magnet is sleeved on the convex column, and the convex column is provided with a second through hole for the push rod to pass through.

2. The magnetic thermostat according to claim 1, characterized in that: A plurality of buckling convex edges are arranged on the side wall of the bottom end of the sleeve body, and a corresponding clamping block is arranged on the bottom bracket. The sleeve body and the bottom bracket are buckled and connected via the buckling convex edges and the clamping block.

3. The magnetic thermostat according to claim 1, characterized in that: The sealing assembly includes an inner spring and a sealing block. The bottom of the sealing block is provided with an installation cavity. The bottom end of the inner spring is pressed against the top of the first magnet, and the top end of the inner spring is stuck in the installation cavity. The sealing block is also provided with a third through hole for the push rod to pass through.

4. The magnetic thermostat according to claim 3, characterized in that: The push rod includes a rod body, a positioning ring arranged at the bottom of the rod body, a first clamping groove opened on the rod body, and a first clamping ring clamped into the first clamping groove; the first clamping groove is located below the positioning ring, and the base is provided with a fourth through hole for the push rod to pass through, and the base is fixed between the positioning ring and the first clamping ring.

5. The magnetic thermostat according to claim 4, characterized in that: The push rod also includes a second clamping groove opened on the rod body and a second clamping ring clamped into the second clamping groove, the second clamping ring is arranged in the inner cavity of the shell and located above the sealing block; the second clamping ring is used to push the sealing block to compress the inner spring.

6. The magnetic thermostat according to claim 4, characterized in that: The water outlet is opened at the top of the shell, and a limiting protrusion is set on the top of the shell. A fifth through hole is opened on the limiting protrusion for the push rod to pass through. A third clamping groove is set on the top of the rod body, and a third clamping ring is clamped in the third clamping groove. The third clamping ring is located above the limiting protrusion.

7. The magnetic thermostat according to claim 1, characterized in that: At least two connecting ears are fixedly connected to the outer edge of the bracket, and the bottom of the shell is provided with fixing columns that are equal to and correspond to the connecting ears in number, each connecting ear is respectively provided with a first threaded hole, and each fixing column is respectively provided with a second threaded hole, a screw is screwed into the first threaded hole of each connecting ear, and the free end of each screw is screwed into the second threaded hole of the corresponding fixing column.

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