An enclosed temperature controller

Abstract

The present application relates to temperature controller technical field, especially a kind of closed temperature controller, including ceramic cover, the ceramic cover is equipped with the electrical terminal mechanism for making circuit on or circuit disconnect;Base, the base is equipped with temperature sensing mechanism;The base and ceramic cover are fixedly connected, and there is guide hole between base and ceramic cover, and guide hole is movably provided with action lever;The lower end of the action lever is abutted to temperature sensing mechanism, and the upper end of the action lever is abutted to electrical terminal mechanism;The action lever is equipped with the fine adjustment mechanism that can fine adjustment action stroke of action lever.This application is equipped with fine adjustment mechanism in action lever, the fine adjustment mechanism can realize fine adjustment action stroke of action lever, and then solve the problem that existing closed temperature controller is difficult to effectively cut off circuit due to the influence of energy storage metal sheet of temperature sensing mechanism itself characteristics and other factors, long time use can limit the action of action lever, cause.

Description

Technical Field

[0001] This invention relates to the field of thermostat technology, and specifically to a closed thermostat. Background Technology

[0002] As is well known, a closed-loop thermostat, also known as a closed-environment thermostat, is a device used to control the temperature in a closed environment. It typically consists of a temperature sensor, a controller, and an actuator. The working principle of a closed-loop thermostat is to monitor the ambient temperature in real time through the temperature sensor and transmit the measured value to the controller. The controller compares the measured value with the set value according to a preset temperature range and adjusts the ambient temperature through the actuator.

[0003] Chinese utility model patent CN211045340U discloses a closed-type thermostat, including a ceramic cover with a base formed on the upper surface of the ceramic cover. The base is a hollow structure with an open top, and a guide hole is provided between the base and the ceramic cover. A temperature-sensing element is provided inside the base, and an actuating mechanism is provided inside the ceramic cover. An actuating rod connecting the temperature-sensing element and the actuating mechanism is provided in the guide hole. A temperature-sensing cover is provided on the port of the base. This prior art has a reasonable structure. The temperature-sensing cover fixes the temperature-sensing element in the cavity of the base and closes the opening of the base. The overall structure is easy to assemble and has high reliability. However, this closed-type thermostat also has certain shortcomings in use. The use of an actuating rod and an energy storage metal plate in this closed-type thermostat cuts off and resets the circuit of the electrical terminal to complete the temperature control operation. Due to the influence of factors such as the characteristics of the energy storage metal plate itself, the movement of the actuating rod will be restricted after long-term use, making it difficult to effectively cut off the circuit.

[0004] Therefore, there is still room for improvement and development in existing technologies. Summary of the Invention

[0005] To address the problem that existing enclosed temperature controllers suffer from limited actuator movement due to the inherent characteristics of the energy storage metal sheet, making it difficult to effectively cut off the circuit after prolonged use, this invention proposes an enclosed temperature controller.

[0006] To achieve the above objectives, the technical solution applied in this invention is as follows:

[0007] A closed-type thermostat includes a ceramic cover with a power terminal mechanism for connecting or disconnecting a circuit; a base with a temperature sensing mechanism; the base and the ceramic cover are fixedly connected, and a guide hole is provided between the base and the ceramic cover, with an actuating rod movably disposed within the guide hole; the lower end of the actuating rod abuts against the temperature sensing mechanism, and the upper end of the actuating rod abuts against the power terminal mechanism; the actuating rod has a fine-tuning mechanism for finely adjusting its travel.

[0008] According to the above scheme, the fine-tuning mechanism includes a contact rod, a support plate, a guide rod, a magnetic plate, an electromagnet one, and an electromagnet two. The support plate is fixed to the inner wall of the actuating rod, the lower end of the guide rod is fixed to the magnetic plate, and the upper end of the guide rod passes through the support plate and is fixed to the bottom of the contact rod. The guide rod is slidably connected to the support plate. Electromagnet one and electromagnet two are fixed to the inner wall of the actuating rod at intervals, with electromagnet two located above the magnetic plate and electromagnet one located below the magnetic plate. A locking mechanism is provided between the outer wall of the contact rod and the inner wall of the actuating rod, and the upper end of the contact rod can extend out of the actuating rod and abut against the electrical terminal mechanism.

[0009] According to the above scheme, the locking mechanism includes multiple locking holes spaced vertically on the inner wall of the action rod and a mounting plate on the contact rod. The mounting plate is provided with an elastic rod, and the elastic rod is provided with a locking ball. The locking ball cooperates with the locking holes to lock in place. A second spring is fixed between the bottom of the contact rod and the top of the support plate.

[0010] According to the above scheme, the power terminal mechanism includes a power terminal one and a power terminal two, which are respectively led out from both ends of the ceramic cover; a power contact one is provided at the end of the power terminal one near the power terminal two, and a connecting spring is provided at the end of the power terminal two near the power terminal one. The connecting spring is provided with a power contact two. When the power contact two contacts the power contact one, the circuit is connected; when the power contact two separates from the power contact one, the circuit is disconnected; the upper end of the contact rod extends out and abuts against the connecting spring; the connecting spring is provided with an abutment point that abuts against the contact rod.

[0011] According to the above scheme, the base is provided with fixed plates symmetrically on both sides of the bottom, and the fixed plate is provided with an installation mechanism on the outer wall of the fixed plate; the installation mechanism includes an installation plate, a washer and a bolt, the installation plate is fixed on the fixed plate, the installation plate is provided with a waist hole, the threaded rod of the bolt passes through the washer and the waist hole and is fixed on the installation component, the installation plate is provided with a limiting mechanism for limiting the bolt; the nut of the bolt is covered with a protective cover.

[0012] According to the above scheme, the outer circle of the threaded rod of the bolt is provided with a limiting groove; the limiting mechanism one includes a screw, a threaded block and a limiting rod symmetrically arranged on the mounting plate, the threaded rod of the screw is threadedly connected to one end of the threaded block, the threaded block is slidably disposed in the mounting plate, the other end of the threaded block is fixedly connected to the limiting rod, the limiting rod extends into the waist hole and cooperates with the limiting groove to lock in place; the mounting plate is provided with a limiting mechanism two for limiting the screw.

[0013] According to the above scheme, the screw has an insertion hole on its outer circumference; the limiting mechanism two includes an insertion rod, the lower end of which engages with the insertion hole, the upper end of which extends out of the mounting plate, and the insertion rod is slidably connected to the mounting plate.

[0014] According to the above scheme, a limiting step is provided on the outer wall of the end of the insertion rod near the insertion hole, and a spring is fixed between the limiting step and the inner wall of the mounting plate.

[0015] According to the above scheme, the inner wall of the protective cover is provided with an elastic retaining ball, and the outer wall of the bolt nut is provided with a retaining groove, and the elastic retaining ball and the retaining groove cooperate to lock in place.

[0016] According to the above scheme, the temperature sensing mechanism includes a temperature sensing cover and an energy storage metal sheet. The temperature sensing cover is fixed on the base, and both ends of the energy storage metal sheet are located inside the temperature sensing cover. The lower end of the actuating rod abuts against the energy storage metal sheet.

[0017] Beneficial effects of this invention:

[0018] The present invention is designed such that by adding a fine-tuning mechanism inside the actuating rod, the actuating rod's stroke can be finely adjusted. This solves the problem that in existing closed-type temperature controllers, the actuating rod's movement is restricted after long-term use due to factors such as the characteristics of the energy storage metal sheet of the temperature sensing mechanism, making it difficult to effectively cut off the circuit. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the fine-tuning mechanism of the present invention;

[0022] Figure 4 yes Figure 3 Enlarged diagram of position A in the middle;

[0023] Figure 5 This is a schematic diagram of the installation mechanism of the present invention;

[0024] Figure 6 yes Figure 5 Enlarged diagram of position B in the middle;

[0025] Figure 7 yes Figure 5 Enlarged diagram of position C in the middle.

[0026] In the picture:

[0027] 1. Ceramic cover; 2. Base; 3. Temperature sensing cover; 4. Fixing plate; 5. Terminal 1; 6. Contact 1; 7. Energy storage metal plate; 8. Actuating rod; 9. Connecting spring; 10. Actuating point; 11. Contact 2; 12. Mounting mechanism; 121. Mounting plate; 122. Waist hole; 123. Washer ring; 124. Bolt; 125. Limiting groove; 126. Insert rod; 1261. Limiting step; 127. Screw; 1271. Insertion hole; 128. 129. Threaded block; 1210. Limiting rod; 1211. Spring 1; 1212. Protective cover; 1213. Elastic retaining ball; 1214. Recessed slot; 13. Fine adjustment mechanism; 131. Contact rod; 132. Support plate; 133. Guide rod; 134. Magnetic plate; 135. Spring 2; 136. Electromagnet 1; 1361. Electromagnet 2; 137. Locking hole; 138. Mounting plate; 139. Elastic rod; 1391. Retaining ball; 14. Electrical terminal 2. Detailed Implementation

[0028] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 and Figure 2 As shown, the closed-type thermostat of the present invention includes a ceramic cover 1, which has a power terminal mechanism for connecting or disconnecting the circuit; a base 2, which has a temperature sensing mechanism; the base 2 and the ceramic cover 1 are fixedly connected, and a guide hole is provided between the base 2 and the ceramic cover 1, within which an actuating rod 8 is movably disposed; the lower end of the actuating rod 8 abuts against the temperature sensing mechanism, and the upper end of the actuating rod 8 abuts against the power terminal mechanism; the actuating rod 8 has a fine-tuning mechanism 13 that can finely adjust the actuating stroke of the actuating rod 8. The present invention is configured such that by adding a fine-tuning mechanism 13 to the actuating rod 8, the actuating stroke of the actuating rod 8 can be finely adjusted, thereby solving the problem that in existing closed-type thermostats, due to the influence of factors such as the characteristics of the energy storage metal sheet 7 of the temperature sensing mechanism, the actuating rod 8's movement is restricted after long-term use, making it difficult to effectively disconnect the circuit.

[0030] like Figure 3 and Figure 4As shown, the fine-tuning mechanism 13 includes a contact rod 131, a support plate 132, a guide rod 133, a magnetic plate 134, an electromagnet 136, and an electromagnet 2 1361. The support plate 132 is fixed to the inner wall of the actuating rod 8. The lower end of the guide rod 133 is fixed to the magnetic plate 134, and the upper end of the guide rod 133 passes through the support plate 132 and is fixed to the bottom of the contact rod 131. The guide rod 133 is slidably connected to the support plate 132. The electromagnet 136 and the electromagnet 2 1361 are fixed to the inner wall of the actuating rod 8 at intervals, with the electromagnet 2 1361 located above the magnetic plate 134 and the electromagnet 136 located below the magnetic plate 134. A locking mechanism is provided between the outer wall of the contact rod 131 and the inner wall of the actuating rod 8, and the upper end of the contact rod 131 can extend out of the actuating rod 8 and abut against the electrical terminal mechanism. This invention is configured such that when factors such as the inherent characteristics of the energy storage metal sheet 7 of the temperature sensing mechanism (e.g., a weakened deformation effect of the energy storage metal sheet 7) restrict the movement of the actuating rod 8, preventing effective circuit disconnection, electromagnet 2 1361 can be activated to magnetically attract the magnetic plate 134, pulling the magnetic plate 134 and the contact rod 131 fixed to the guide rod 133 upwards. This ensures that the contact rod 131 can contact the connecting spring 9 of the power terminal mechanism and push open the connecting spring 9, effectively disconnecting the circuit. Conversely, electromagnet 136 can be activated to magnetically attract the magnetic plate 134, pulling the magnetic plate 134 and the contact rod 131 fixed to the guide rod 133 downwards, ensuring the normal reset of the connecting spring 9 and restoring the circuit. In practical applications, the guide rod 133 is slidably connected to the support plate 132, which limits and guides the guide rod 133, making the contact rod 131 more stable when moving up and down.

[0031] In this embodiment, the locking mechanism includes multiple locking holes 137 spaced vertically on the inner wall of the actuating rod 8 and a mounting plate 138 on the contact rod 131. The mounting plate 138 has an elastic rod 139, and the elastic rod 139 has a locking ball 1391. The locking ball 1391 engages with the locking holes 137 for locking. A spring 135 is fixed between the bottom of the contact rod 131 and the top of the support plate 132. This design allows the locking ball 1391 to engage with the locking holes 137, enabling precise control of the position of the contact rod 131 during vertical movement. More specifically, as... Figure 4 As shown, the locking ball 1391 engages with one of the locking holes 137. As the contact rod 131 moves up and down, the inner wall of the actuating rod 8 squeezes the locking ball 1391, causing the elastic rod 139 to deform and be in a compressed state. The locking ball 1391 disengages from the locking hole 137. When the locking ball 1391 aligns with the other locking hole 137, the elastic rod 139 recovers its deformation. Under the rebound force, the locking ball 1391 engages with the other locking hole 137.

[0032] In this embodiment, the power terminal mechanism includes a first power terminal 5 and a second power terminal 14, which extend from both ends of the ceramic cover 1. The first power terminal 5 has a first power contact 6 near the second power terminal 14, and the second power terminal 14 has a connecting spring 9 near the first power terminal 5. The connecting spring 9 has a second power contact 11. When the second power contact 11 contacts the first power contact 6, the circuit is connected; when the second power contact 11 separates from the first power contact 6, the circuit is disconnected. The upper end of the contact rod 131 extends outwards and abuts against the connecting spring 9. The connecting spring 9 has an abutment point 10 that abuts against the contact rod 131. This design, by providing an abutment point 10 on the connecting spring 9, improves the contact effect between the upper end of the contact rod 131 and the connecting spring 9, avoiding ineffective sliding and thus ensuring a more stable circuit disconnection effect. In practical applications, the first power terminal 5 and the second power terminal 14 are led out from both ends of the ceramic cover 1 to facilitate the connection of positive and negative terminals of external circuits.

[0033] like Figures 5 to 7 As shown, the base 2 has symmetrically arranged fixing plates 4 on both sides of its bottom, and an installation mechanism 12 is provided on the outer wall of the fixing plate 4. The installation mechanism 12 includes an installation plate 121, a washer 123, and a bolt 124. The installation plate 121 is fixed to the fixing plate 4, and the installation plate 121 has a waist hole 122. The threaded rod of the bolt 124 passes through the washer 123 and the waist hole 122 and is fixed to the installation component. The installation plate 121 is provided with a limiting mechanism for limiting the bolt 124. The nut of the bolt 124 is covered with a protective cover 1211. In this way, when fixing the closed thermostat, the bolt 124 is fixed to the installation component by passing through the washer 123 and the waist hole 122. The waist hole 122 can facilitate the adjustment of the position of the bolt 124, which is convenient for subsequent assembly and use of the bolt 124 with the threaded hole or nut seat on the installation component. The operation is convenient. It should be noted that the mounting plate 121 is provided with a limiting mechanism for the limiting bolt 124, which can prevent the bolt 124 from vibrating and deflecting, causing it to become unscrewed; a protective cover 1211 is wrapped around the nut of the bolt 124, which can protect the bolt 124, prevent the bolt 124 from rusting, and thus improve its service life.

[0034] In this embodiment, the outer circumference of the threaded rod of the bolt 124 is provided with a limiting groove 125; the limiting mechanism one includes a screw 127, a threaded block 128, and a limiting rod 129 symmetrically arranged on the mounting plate 121. The threaded rod of the screw 127 is threadedly connected to one end of the threaded block 128, the threaded block 128 is slidably disposed in the mounting plate 121, and the other end of the threaded block 128 is fixedly connected to the limiting rod 129. The limiting rod 129 extends into the waist hole 122 and engages with the limiting groove 125; the mounting plate 121 is provided with a limiting mechanism two for limiting the screw 127. With this design, when the bolt 124 is tightened into the threaded hole on the mounting component, the screw 127 can be rotated to drive the threaded block 128 to slide relative to the mounting plate 121, thereby causing the limiting rod 129 to extend into the waist hole 122 and engage with the limiting groove 125, thus preventing the bolt 124 from vibrating and deflecting, causing it to unravel. It should be noted that during disassembly, the screw 127 must be rotated first to drive the threaded block 128 to disengage the limiting rod 129 from the limiting groove 125 before the bolt 124 can be rotated.

[0035] In this embodiment, the screw 127 has an insertion hole 1271 on its threaded outer circumference; the second limiting mechanism includes an insertion rod 126, the lower end of which engages with the insertion hole 1271, and the upper end of which extends out of the mounting plate 121, with the insertion rod 126 slidably connected to the mounting plate 121. This design ensures that when the screw 127 rotates, driving the threaded block 128 to engage with the limiting rod 129 in the limiting groove 125, the lower end of the insertion rod 126 engages with the insertion hole 1271 to lock the screw 127 in place, preventing vibration and deflection of the screw 127. It should be noted that during disassembly, the insertion rod 126 must be pulled out of the insertion hole 1271 before the screw 127 can be rotated.

[0036] In this embodiment, a limiting step 1261 is provided on the outer wall of the end of the insertion rod 126 near the insertion hole 1271, and a spring 1210 is fixed between the limiting step 1261 and the inner wall of the mounting plate 121. This design ensures that the insertion rod 126 remains within the insertion hole 1271 due to the elastic force of the spring 1210. When the screw 127 needs to be rotated, the insertion rod 126 must first be pulled out of the insertion hole 1271, compressing the spring 1210. After the screw 127 stops rotating, the insertion rod 126 is released, and under the elastic force of the spring 1210, the insertion rod 126 is reinserted into the insertion hole 1271.

[0037] In this embodiment, the inner wall of the protective cover 1211 is provided with an elastic retaining ball 1212, and the outer wall of the nut of the bolt 124 is provided with a retaining groove 1213. The elastic retaining ball 1212 and the retaining groove 1213 cooperate to lock in place. This arrangement of the present invention makes the covering effect of the protective cover 1211 on the outer wall of the nut of the bolt 124 better and prevents it from falling off. More specifically, when the protective cover 1211 is fitted on the outer wall of the nut of the bolt 124, the outer wall of the nut of the bolt 124 compresses the elastic retaining ball 1212, causing it to deform. Under the action of force, the elastic retaining ball 1212 moves along the outer wall of the nut of the bolt 124. When the elastic retaining ball 1212 corresponds to the position of the retaining groove 1213, the elastic retaining ball 1212 restores its deformation and is squeezed into the retaining groove 1213, thereby realizing the locking between the protective cover 1211 and the nut of the bolt 124.

[0038] In this embodiment, the temperature sensing mechanism includes a temperature sensing cover 3 and an energy storage metal sheet 7. The temperature sensing cover 3 is fixed to the base 2, and both ends of the energy storage metal sheet 7 are engaged within the temperature sensing cover 3. The lower end of the actuating rod 8 abuts against the energy storage metal sheet 7. With this configuration, when the device reaches a certain temperature, the temperature sensing cover 3 senses the temperature and transmits it to the energy storage metal sheet 7, causing the energy storage metal sheet 7 to undergo a sudden deformation, pushing the actuating rod 8 upwards, thereby actuating the connecting spring 9. This is the working principle of the temperature controller, which will not be described in detail here.

[0039] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. All of these modifications are within the scope of protection of the present invention.

Claims

1. A closed-loop temperature controller, characterized in that, include: A ceramic cover, wherein the ceramic cover is provided with a terminal mechanism for connecting or disconnecting the circuit; A base, wherein a temperature sensing mechanism is provided within the base; The base and the ceramic cover are fixedly connected, and a guide hole is provided between the base and the ceramic cover. An actuating rod is movably disposed in the guide hole; the lower end of the actuating rod abuts against the temperature sensing mechanism, and the upper end of the actuating rod abuts against the electrical terminal mechanism. The actuator is equipped with a fine-tuning mechanism that allows for precise adjustment of the actuator's stroke. The fine-tuning mechanism includes a contact rod, a support plate, a guide rod, a magnetic plate, an electromagnet one, and an electromagnet two. The support plate is fixed to the inner wall of the actuating rod, the lower end of the guide rod is fixed to the magnetic plate, and the upper end of the guide rod passes through the support plate and is fixed to the bottom of the contact rod. The guide rod is slidably connected to the support plate. Electromagnet one and electromagnet two are fixed to the inner wall of the actuating rod at intervals, with electromagnet two located above the magnetic plate and electromagnet one located below the magnetic plate. A locking mechanism is provided between the outer wall of the contact rod and the inner wall of the actuating rod, and the upper end of the contact rod can extend out of the actuating rod and abut against the electrical terminal mechanism.

2. A closed-type temperature controller according to claim 1, characterized in that: The locking mechanism includes multiple locking holes spaced vertically on the inner wall of the actuating rod and a mounting plate on the contact rod. The mounting plate is provided with an elastic rod, and the elastic rod is provided with a locking ball. The locking ball cooperates with the locking holes to lock in place. A spring is fixed between the bottom of the contact rod and the top of the support plate.

3. A closed-type temperature controller according to claim 1, characterized in that: The power terminal mechanism includes a power terminal one and a power terminal two, which extend from both ends of the ceramic cover. A power contact one is provided at the end of power terminal one near power terminal two, and a connecting spring is provided at the end of power terminal two near power terminal one. A power contact two is provided on the connecting spring. When power contact two contacts power contact one, the circuit is connected; when power contact two separates from power contact one, the circuit is disconnected. The upper end of the contact rod extends out and abuts against the connecting spring. The connecting spring has an abutment point that abuts against the contact rod.

4. A closed-type temperature controller according to claim 1, characterized in that: The base has symmetrical fixing plates on both sides of its bottom, and the fixing plates have an installation mechanism on their outer walls. The installation mechanism includes a mounting plate, a washer, and a bolt. The mounting plate is fixed to the fixing plate. The mounting plate has a waist hole. The threaded rod of the bolt passes through the washer and the waist hole and is fixed to the mounting component. The mounting plate has a limiting mechanism for limiting the bolt. The bolt nut is covered with a protective cover.

5. A closed-type temperature controller according to claim 4, characterized in that: The bolt has a limiting groove on its outer circumference; the limiting mechanism one includes a screw, a threaded block and a limiting rod symmetrically arranged on the mounting plate, the threaded rod of the screw is threadedly connected to one end of the threaded block, the threaded block is slidably disposed in the mounting plate, the other end of the threaded block is fixedly connected to the limiting rod, the limiting rod extends into the waist hole and engages with the limiting groove; the mounting plate is provided with a limiting mechanism two for limiting the screw.

6. A closed-loop temperature controller according to claim 5, characterized in that: The screw has an insertion hole on its outer threaded outer circle; the second limiting mechanism includes an insertion rod, the lower end of which engages with the insertion hole, the upper end of which extends out of the mounting plate, and the insertion rod is slidably connected to the mounting plate.

7. A closed-type temperature controller according to claim 6, characterized in that: A limiting step is provided on the outer wall of the end of the insertion rod near the insertion hole, and a spring is fixed between the limiting step and the inner wall of the mounting plate.

8. A closed-type temperature controller according to claim 4, characterized in that: The inner wall of the protective cover is provided with an elastic retaining ball, and the outer wall of the bolt nut is provided with a retaining groove, and the elastic retaining ball cooperates with the retaining groove to lock in position.

9. A closed-type temperature controller according to claim 1, characterized in that: The temperature sensing mechanism includes a temperature sensing cover and an energy storage metal sheet. The temperature sensing cover is fixed on the base, and both ends of the energy storage metal sheet are located inside the temperature sensing cover. The lower end of the actuating rod abuts against the energy storage metal sheet.

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