A thermal magnetically controlled thermostat

Abstract

The present invention discloses a thermal-sensitive magnetic-controlled thermostat, comprising a tubular shell, a hollow annular protrusion arranged on the inner wall of the shell, and a movable swing plate pivotally connected to the inside of the shell; the movable swing plate is located between the protrusions, and the longitudinal section of the movable swing plate is Z-shaped, comprising an upper swing plate, a receiving portion, and a lower swing plate connected in sequence, and when the upper swing plate is placed horizontally, the upper swing plate is magnetically attracted to the upper end face of the protrusion through multiple groups of thermal-sensitive magnetic suction components, and when the lower swing plate is placed horizontally, the lower swing plate is magnetically attracted to the lower end face of the protrusion through multiple groups of thermal-sensitive magnetic suction components, and the thermal-sensitive magnetic suction components can change the magnetic attraction capacity according to the ambient temperature. The thermal-sensitive magnetic-controlled thermostat provided by the present invention has a simple and ingenious structure, a simple control method, strong working reliability, convenient installation, easy manufacturing, and low cost, and can bring good social benefits to the development and application of thermal energy saving.

Description

Technical Field

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

[0002] Some industrial control and thermal energy control occasions often require the use of thermostatic valves (also called thermostats). For example, in the central heating equipment in the north in winter, the valve will not be opened until the water is heated to a certain temperature. This can effectively reduce heat loss and reduce boiler fuel energy consumption.

[0003] Another example: When starting a car diesel internal combustion engine in the north at sub-zero temperatures in winter, it is difficult to start due to the low temperature of the engine body. Preheating the engine requires a certain amount of fuel. One of the reasons is that the ignition point of diesel is high. When the temperature is low, the viscosity of diesel is large. It is not easy to atomize when sprayed into the cylinder, and it cannot be well mixed with the air. The cylinder body needs to be preheated to a certain temperature before the diesel can be completely burned. Therefore, a thermostat is installed in the cooling loop of the car. Its function is to close the cooling loop with the radiator when the engine is cold started, so that the temperature of the engine cylinder body rises quickly and the diesel is completely burned. When the body temperature reaches about 80°C, the cooling pipe valve is opened, which can shorten the start time and reduce diesel consumption.

[0004] At present, the thermostats used in automobile engines are generally paraffin-type 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 valve body 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 valve body to open the valve, and the coolant flows through and enters the cooling cycle.

[0005] However, the energy-saving temperature control valves based on the above applications are all complicated in structure, high in manufacturing cost, difficult in application and control, and have high failure rate. Therefore, there is an urgent need for a thermostat with simple structure, easy to manufacture, and convenient to control and apply. 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 thermally sensitive magnetically controlled thermostat, which aims to utilize the temperature to change the magnetic attraction of the magnet to achieve the switching function of adjusting the thermostat.

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

[0008] A thermal-sensitive magnetically controlled thermostat comprises a tubular shell, a hollow annular protrusion arranged on the inner wall of the shell, and a movable swing plate pivotally connected to the inside of the shell; the movable swing plate is located between the protrusions, and the longitudinal section of the movable swing plate is Z-shaped, comprising an upper swing plate, a receiving portion, and a lower swing plate connected in sequence, when the upper swing plate is placed horizontally, the upper swing plate is magnetically attracted to the upper end face of the protrusion through multiple groups of thermal-sensitive magnetic suction components, when the lower swing plate is placed horizontally, the lower swing plate is magnetically attracted to the lower end face of the protrusion through multiple groups of thermal-sensitive magnetic suction components, and the thermal-sensitive magnetic suction components can change the magnetic suction capacity according to the ambient temperature.

[0009] The shell is in the shape of a circular tube, the movement axis of the receiving part is perpendicular to the axis of the shell but does not intersect, the movement axis of the receiving part is offset to one side of the axis of the shell, the protrusion is provided with two symmetrically arranged notches, the two notches divide the protrusion into a first arc segment and a second arc segment concentrically arranged on the inner wall of the shell, the arc length of the first arc segment is greater than the arc length of the second arc segment, the receiving part is located between the first arc segment and the second arc segment, the upper swing plate and the lower swing plate are both semicircular, the upper swing plate can be tightly connected to the top of the first arc segment, and the lower swing plate can be tightly connected to the bottom of the second arc segment.

[0010] Each group of thermosensitive magnetic attraction components includes a thermosensitive soft magnet arranged on the movable swing plate and a hard magnet arranged on the protrusion, and the thermosensitive soft magnet and the hard magnet in each group are arranged correspondingly.

[0011] The upper swing plate and the lower swing plate are provided with mounting holes for mounting the thermosensitive soft magnet. The thermosensitive soft magnet is mounted in the mounting holes, and the magnetic ends of the thermosensitive soft magnet are flush with the ports of the mounting holes.

[0012] The protrusion is provided with a through hole for installing a hard magnet, and two ends of the hard magnet are flush with two ends of the through hole.

[0013] The number of the thermal-sensitive magnetic components between the upper swing plate and the protrusion is the same as the number of the thermal-sensitive magnetic components between the lower swing plate and the protrusion.

[0014] All the thermal-sensitive magnetic components arranged between the lower swing plate and the second arc segment are distributed at equal angles in the circumferential direction.

[0015] Among all the thermosensitive magnetic attraction components arranged between the upper swing plate and the first arc segment, most of the thermosensitive magnetic attraction components are concentrated in the middle of the first arc segment.

[0016] A first vertical inner angle is formed at the intersection of the upper swing plate and the supporting part, and the first vertical inner angle can be fitted with the upper corners of the two ends of the first arc segment. A second vertical inner angle is formed at the intersection of the upper swing plate and the supporting part, and the second vertical inner angle is fitted with the lower corners of the two ends of the second arc segment. The upper corners of the two ends of the first arc segment and the lower corners of the two ends of the second arc segment are both provided with limited chamfers.

[0017] The receiving portion is connected to the shell through a pin shaft, and the movable swing plate can swing relative to the shell. An eccentric shaft hole for installing the pin shaft is opened on the shell.

[0018] Beneficial effects:

[0019] The present invention provides a thermosensitive magnetic control thermostat. Compared with the existing thermostat, the thermosensitive magnetic material is used to control the switch of the thermostat by utilizing the characteristic that the ferromagnetism of the thermosensitive magnetic material is changed by temperature. Since the receiving part in the movable swing plate is eccentrically arranged, the area of ​​the upper swing plate is larger than the area of ​​the lower swing plate. When the thermostat is closed, the pressure of water acting on the upper swing plate is greater than the pressure acting on the lower swing plate. However, under the magnetic attraction of all thermosensitive magnetic components, the water pressure is not enough to push the movable swing plate to swing. Only when the thermosensitive soft magnet loses its ferromagnetism, the water pressure can push the movable swing plate open and allow the water flow to flow into other devices. When there is no water pressure, the temperature of the thermosensitive soft magnet gradually drops below its Curie temperature point, the ferromagnetism of the thermosensitive soft magnet is restored, and the thermosensitive soft magnet and the ferromagnet form a magnetic attraction. Moreover, since the weight of the upper swing plate is greater than the gravity of the lower swing plate, the movable swing plate, under the action of the lever balance, the upper swing plate approaches the arc segment direction, and the lower swing plate approaches the second arc segment direction. The movable swing plate flips to a horizontal state again under the double force, and the thermostat is closed. It can be seen that the thermistor magnetically controlled thermostat has a simple and ingenious structure, a simple control method, strong working reliability, easy installation, easy manufacturing, and low cost, and can bring good social benefits to the development and application of thermal energy conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the thermal-sensitive magnetically controlled thermostat provided by the present invention in a closed state.

[0021] Figure 2 This is a structural schematic diagram of the thermal-sensitive magnetic-controlled thermostat provided by the present invention in an open state.

[0022] Figure 3 A cross-sectional view of the thermal-sensitive magnetically controlled thermostat provided by the present invention in an open state.

[0023] Figure 4 This is a top view of the thermal-sensitive magnetically controlled thermostat provided by the present invention.

[0024] Figure 5 A three-dimensional diagram of the housing of the thermal-sensitive magnetically controlled thermostat provided by the present invention.

[0025] Figure 6 A three-dimensional diagram of a movable swing plate in a thermal-sensitive magnetically controlled thermostat provided by the present invention. DETAILED DESCRIPTION

[0026] The present invention provides a thermal magnetically controlled 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 embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0027] In this article, the present invention provides a thermal magnetic control thermostat. Figure 1 and Figure 2 The direction indicated by the arrow is the direction of water flow.

[0028] See also Figure 1-Figure 6 The present invention provides a thermal magnetic control thermostat, comprising a tubular shell 1, a hollow annular protrusion 2 arranged on the inner wall of the shell, and a movable swing plate 3 pivotally connected to the inside of the shell; the movable swing plate 3 is located between the protrusions 2, and the longitudinal section of the movable swing plate is Z-shaped, including an upper swing plate 31, a receiving portion 32, and a lower swing plate 33 connected in sequence. When the upper swing plate is placed horizontally, the upper swing plate 31 is magnetically attracted to the upper end face of the protrusion 3 through multiple groups of thermal magnetic suction components 4, and when the lower swing plate 33 is placed horizontally, the lower swing plate 33 is magnetically attracted to the lower end face of the protrusion 2 through multiple groups of thermal magnetic suction components 4, and the thermal magnetic suction component 4 can change the magnetic attraction ability according to the ambient temperature. Here, the shell 1 can be designed as a circular tube or a square tube according to production requirements. Similarly, the hollow annular protrusion and the movable swing plate are designed to be compatible with the shell. The change of the shape of the components does not affect the implementation effect of the present invention.

[0029] Here, see Figure 1-Figure 3 Each group of thermosensitive magnetic attraction components 4 includes a thermosensitive soft magnet 41 arranged on the movable swing plate and a hard magnet 42 arranged on the protrusion, and the thermosensitive soft magnet 41 and the hard magnet 42 in each group are arranged correspondingly. The thermosensitive soft magnet 41 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 41 has ferromagnetism, the thermosensitive soft magnet 41 and the hard magnet 42 are attracted to each other under the action of magnetic force. When the thermosensitive soft magnet 41 loses ferromagnetism, the thermosensitive soft magnet 41 and the hard magnet 42 cannot have a 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.

[0030] In this embodiment, please refer to Figure 5 The shell 1 is in the shape of a circular tube, the movement axis of the receiving portion 32 is perpendicular to the axis of the shell 1 but does not intersect, the movement axis of the receiving portion 32 is offset to one side of the axis of the shell (i.e., eccentrically arranged), the protrusion 2 is provided with two symmetrically arranged notches 21, the two notches divide the protrusion into a first arc segment 22 and a second arc segment 23 which are concentrically arranged on the inner wall of the shell, the arc length of the first arc segment 22 is greater than the arc length of the second arc segment 23, the receiving portion 32 is located between the first arc segment 22 and the second arc segment 23, the upper swing plate 31 and the lower swing plate 33 are semicircular, the upper swing plate 31 can be tightly connected to the top of the first arc segment 22, and the lower swing plate 33 can be tightly connected to the bottom of the second arc segment 23.

[0031] See also Figure 1 and Figure 2 For example, when the thermostat is used in heating equipment, the thermostat is installed at the outlet of the hot water pipe of the heating equipment. The change of water temperature can affect the magnetic properties of the thermosensitive soft magnet. When the water temperature is lower than the Curie temperature of the thermosensitive soft magnet, the thermosensitive soft magnet 41 installed on the movable swing plate 3 and the hard magnet 42 arranged on the protrusion 2 are attracted to each other under the action of magnetic force, and the movable swing plate 3 is tightly closed. When the water temperature gradually increases, the temperature of the thermosensitive soft magnet 41 also increases. When the thermosensitive soft magnet 41 reaches or exceeds its Curie temperature, the magnetic force of the thermosensitive soft magnet disappears, and under the action of water pressure, it is pushed from a horizontal state to an inclined state.

[0032] See also Figure 1 and Figure 2 , because the receiving part in the movable swing plate 3 is eccentrically arranged, the area of ​​the upper swing plate 31 is larger than the area of ​​the lower swing plate 33. When the thermostat is closed, the pressure of the water flow on the upper swing plate 31 is greater than the pressure on the lower swing plate 33. However, under the magnetic attraction of all the thermosensitive magnetic components 4, the water pressure is not enough to push the movable swing plate 4 to swing. Only when the thermosensitive soft magnet 41 loses its ferromagnetism, the water pressure can push the movable swing plate 3 open and allow the water flow to flow into other devices. When there is no water pressure, the temperature of the thermosensitive soft magnet 41 gradually drops below its Curie temperature, the ferromagnetism of the thermosensitive soft magnet 41 is restored, and the thermosensitive soft magnet 41 and the ferromagnet 42 form a magnetic attraction. Moreover, because the weight of the upper swing plate 31 is greater than the gravity of the lower swing plate 32, the movable swing plate 3, under the action of the lever balance, the upper swing plate 31 approaches the first arc segment, and the lower swing plate 33 approaches the second arc segment 23. The movable swing plate 3 flips to a horizontal state again under the double force, and the thermostat is closed. Compared with the existing thermostats, the thermostat provided by this embodiment has a simple and ingenious structure, a simple control method, strong working reliability, convenient installation, easy manufacturing, and low cost, and can bring good social benefits to the development and application of thermal energy saving.

[0033] For details, please refer to Figure 6 , the upper swing plate 31 and the lower swing plate 33 are provided with mounting holes for mounting the thermosensitive soft magnet 41, the thermosensitive soft magnet 41 is mounted in the mounting holes, and the magnetic end of the thermosensitive soft magnet 41 is flush with the port of the mounting hole 34. The thermosensitive soft magnet 41 and the mounting hole 34 are interference fit, so that the thermosensitive soft magnet 41 cannot be separated from the mounting hole 34. In order to facilitate the installation of the thermosensitive soft magnet 41, the mounting hole 34 is generally set as a through hole. Of course, the mounting hole 34 can also be a blind hole. The magnetic end of the thermosensitive soft magnet is flush with the port of the mounting hole, so that when the thermostat is closed, the upper swing plate and the lower swing plate on the movable swing plate can fit the protrusion as much as possible to prevent the thermosensitive soft magnet from interfering and forming a gap.

[0034] Preferably, the protrusion 2 is provided with a through hole 24 for mounting the hard magnet 42, and the two ends of the hard magnet 42 are flush with the two ends of the through hole 24. The through hole 24 and the hard magnet 42 are interference fit, so that the hard magnet 42 cannot be separated from the through hole; and because the two ends of the hard magnet are flush with the two ends of the through hole, the upper swing plate and the lower swing plate on the movable swing plate can fit with the protrusion when the thermostat is closed, preventing water from penetrating from the gap, thereby ensuring the closed sealing of the thermostat.

[0035] In order to ensure that the weight of the thermal magnetic components on both sides of the movable swing plate is equal, the number of thermal magnetic components between the upper swing plate 31 and the protrusion 2 is the same as the number of thermal magnetic components between the lower swing plate 33 and the protrusion 2. In this embodiment, 10 groups of thermal magnetic components 4 are provided to ensure that the magnetic force provided by the thermal magnetic components 4 is greater than the water pressure when the thermostat is closed, thereby improving the reliability of the energy-saving closing of the thermostat.

[0036] Preferably, on the one hand, in order to make the weight distribution of the lower swing plate 33 uniform and not biased to one end, all the thermosensitive magnetic components 4 arranged between the lower swing plate 33 and the second arc segment 23 are distributed at equal angles in the circumferential direction. On the other hand, most of the thermosensitive magnetic components between the upper swing plate 31 and the first arc segment 22 are concentrated in the middle of the first arc segment 22. Under the interaction of the two aspects, the center of gravity of the movable swing plate is better biased toward the end of the upper swing plate 31, so that when the movable flip relies on gravity to find its own balance, the upper swing plate and the lower swing plate can be closer to the protrusion, ensuring that the thermosensitive magnetic components can have a magnetic attraction effect and ensuring that the movable swing plate and the protrusion are closed smoothly.

[0037] Preferably, see Figure 1The intersection of the upper swing plate 31 and the receiving portion 32 forms a first vertical inner angle 51, which can fit with the upper corners of the two ends of the first arc segment 22. The intersection of the upper swing plate 31 and the receiving portion 32 forms a second vertical inner angle 52, which fits with the lower corners of the two ends of the second arc segment. The upper corners of the two ends of the first arc segment and the lower corners of the two ends of the second arc segment are both provided with limited chamfers 53. By setting the first vertical inner angle and the second vertical inner angle, the sealing of the thermostat when it is closed is further improved to prevent water leakage. In addition, by setting the limited chamfer, on the one hand, the movable swing plate is prevented from interfering with the protrusion when it is turned over, and on the other hand, the swing amplitude of the movable swing plate is limited to ensure that the movable swing plate does not exceed the range of activity that can be automatically closed.

[0038] Preferably, see Figure 5 and Figure 6 The receiving portion 32 is connected to the housing 1 through the pin 6, and the movable swing plate can swing relative to the housing. The housing 1 is provided with an eccentric shaft hole 11 for installing the pin 6. The receiving portion 32 is provided with a receiving hole 32a for the pin to pass through. During assembly, the pin 6 passes through the eccentric shaft hole 11 and the receiving hole 32a in sequence, which is convenient for assembly. The receiving hole and the pin are interference fit, and the movable swing plate turns around the pin smoothly and steadily.

[0039] 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 thermal magnetically controlled thermostat, characterized in that: It includes a tubular shell, a hollow annular protrusion arranged on the inner wall of the shell, and a movable swing plate pivotally connected to the inside of the shell; the movable swing plate is located between the protrusions, and the longitudinal section of the movable swing plate is Z-shaped, including an upper swing plate, a receiving portion, and a lower swing plate connected in sequence, when the upper swing plate is placed horizontally, the upper swing plate is magnetically attracted to the upper end face of the protrusion through multiple groups of thermal magnetic suction components, when the lower swing plate is placed horizontally, the lower swing plate is magnetically attracted to the lower end face of the protrusion through multiple groups of thermal magnetic suction components, and the thermal magnetic suction components can change the magnetic suction capacity according to the ambient temperature; the shell is in a circular tubular shape, the movement axis of the receiving portion is perpendicular to the axis of the shell but does not intersect, the The movement axis of the receiving part is offset to one side of the axis of the shell, and the protrusion is provided with two symmetrically arranged notches, which divide the protrusion into a first arc segment and a second arc segment concentrically arranged on the inner wall of the shell, and the arc length of the first arc segment is greater than the arc length of the second arc segment. The receiving part is located between the first arc segment and the second arc segment, and the upper swing plate and the lower swing plate are both semicircular, and the upper swing plate can be tightly connected to the top of the first arc segment, and the lower swing plate can be tightly connected to the bottom of the second arc segment; each group of thermistor magnetic suction components includes a thermosensitive soft magnet arranged on the movable swing plate and a hard magnet arranged on the protrusion, and the thermosensitive soft magnet and hard magnet in each group are arranged correspondingly.

2. The thermal magnetically controlled thermostat according to claim 1, characterized in that: The upper swing plate and the lower swing plate are provided with mounting holes for mounting the thermosensitive soft magnet. The thermosensitive soft magnet is mounted in the mounting holes, and the magnetic ends of the thermosensitive soft magnet are flush with the ports of the mounting holes.

3. The thermal magnetically controlled thermostat according to claim 1 or 2, characterized in that: The protrusion is provided with a through hole for installing a hard magnet, and two ends of the hard magnet are flush with two ends of the through hole.

4. The thermal magnetically controlled thermostat according to claim 1, characterized in that: The number of the thermal-sensitive magnetic components between the upper swing plate and the protrusion is the same as the number of the thermal-sensitive magnetic components between the lower swing plate and the protrusion.

5. The thermal magnetically controlled thermostat according to claim 4, characterized in that: All the thermal-sensitive magnetic components arranged between the lower swing plate and the second arc segment are distributed at equal angles in the circumferential direction.

6. The thermal magnetically controlled thermostat according to claim 4, characterized in that: Among all the thermosensitive magnetic attraction components arranged between the upper swing plate and the first arc segment, most of the thermosensitive magnetic attraction components are concentrated in the middle of the first arc segment.

7. The thermal magnetically controlled thermostat according to claim 1, characterized in that: A first vertical inner angle is formed at the intersection of the upper swing plate and the supporting part, and the first vertical inner angle can be fitted with the upper corners of the two ends of the first arc segment. A second vertical inner angle is formed at the intersection of the upper swing plate and the supporting part, and the second vertical inner angle is fitted with the lower corners of the two ends of the second arc segment. The upper corners of the two ends of the first arc segment and the lower corners of the two ends of the second arc segment are both provided with limited chamfers.

8. The thermal magnetically controlled thermostat according to claim 1, characterized in that: The receiving portion is connected to the shell through a pin shaft, and the movable swing plate can swing relative to the shell. An eccentric shaft hole for installing the pin shaft is opened on the shell.

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