Closed Temperature Control Device

Abstract

The present invention relates to the technical field of thermostats, and provides a sealed temperature control device with a reasonable structure, easy assembly, and high safety. [Solution] The present invention includes a ceramic box and a base, the base has a cavity structure with an opening, the base and the ceramic box are fixedly connected, a guide hole is provided between the base and the ceramic box, a temperature-sensitive sheet is provided in the base, an action mechanism is provided in the ceramic box, an action lever is provided in the guide hole for connecting the temperature-sensitive sheet and the action mechanism, and a temperature-sensitive cover is provided at the opening of the base. The present invention has a rational structure, and the temperature-sensitive cover fixes the temperature-sensitive sheet in the cavity of the base and closes the opening of the base.

Description

[Technical field]

[0001] The present invention relates to the technical field of thermostats, and in particular to hermetic temperature control devices. [Background technology]

[0002] The temperature sensor is a temperature-sensing controller with self-action protection, circuit breaker holding, and self-resetting functions during power outages. It has a wide range of applications and can be used flexibly, which can protect the safety of the circuit of electrical appliances and avoid damage caused by excessive operating temperature. The bimetal overheating thermostat is one of the most common, and its principle is to sense the operating temperature of electrical equipment by contacting and receiving heat, and the bimetal jumps and deforms, driving the receiving terminal to cut off the circuit and quickly cut off the power supply of the electrical appliance.

[0003] For example, the bimetal thermal circuit breaker disclosed in Chinese Patent CN103337410A includes a bimetal, a ceramic pusher, an action sheet, a receiving sheet, and a receiving terminal, the ceramic base is provided with a mounting cavity, the bimetal is enclosed in the mounting cavity of the ceramic base, and a metal temperature-sensitive mounting bracket is provided at the port of the mounting cavity, which is used to contact a heat source and conduct temperature to the bimetal. The metal temperature-sensitive bracket is an aluminum alloy plate, which is provided at the port of the ceramic base and fixed to the port by rivets, and this structure has poor sealing of the mounting cavity in the ceramic base, complicated assembly, and potential risks to the electrical safety of the circuit breaker.

[0004] Therefore, there is room for improvement and development in the current technology. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT DISCLOSURE The objective of the present invention is to provide a sealed temperature control device which has a reasonable structure, is easy to assemble, and has high safety, in view of the defects and shortcomings of the prior art. [Means for solving the problem]

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions.

[0007] A sealed temperature control device including a ceramic box and a base, The base has a cavity structure with an opening, the base and the ceramic box are fixedly connected, and a guide hole is provided between the base and the ceramic box; A temperature-sensitive sheet is provided in the base, an action mechanism is provided in the ceramic box, and an action lever that connects the temperature-sensitive sheet and the action mechanism is provided in the guide hole, A temperature sensitive cover is provided at the opening of the base.

[0008] According to the above embodiment, the temperature-sensing cover is fitted into the opening of the base to seal the opening, and protrusions are formed on the inner surface of the temperature-sensing cover to position and fit with both ends of the temperature-sensing sheet.

[0009] According to the above embodiment, the temperature-sensing sheet includes a bimetal and an energy storage steel plate, the bimetal and the energy storage steel plate all have the same shape and size, the bimetal is laminated on the energy storage steel plate, the bimetal is abutted against and connected to the temperature-sensing cover, and both ends of the action lever are abutted against and connected to the energy storage steel plate of the temperature-sensing sheet and the action mechanism, respectively.

[0010] According to the above embodiment, the ceramic box has a cavity structure with an open bottom, the action mechanism includes two receiving terminals, limiting posts are provided at both ends of the cavity of the ceramic box, engaging holes are provided in the receiving terminals, the two receiving terminals are pulled out from both ends of the ceramic box, the receiving terminals and the ceramic box are fitted and connected by the limiting posts and the engaging holes, a connecting elastic piece is movably connected between the two receiving terminals, and the connecting elastic piece is provided with an action point for abutting against and connecting to an action lever.

[0011] According to the above embodiment, the fixing plates are symmetrically provided on both sides of the base.

[0012] According to the above aspect, a fine adjustment mechanism capable of finely adjusting the action stroke of the action lever is provided within the action lever.

[0013] According to the above embodiment, the fine adjustment mechanism includes a contact lever, a support plate, a guide lever, a magnetic plate, an electromagnet 1, and an electromagnet 2, the support plate is fixed to the inner wall of the action lever, the lower end of the guide lever is fixed to the magnetic plate, the upper end of the guide lever passes through the support plate and the electromagnet 2 and is fixed at an interval to the inner wall of the action lever, the electromagnet 2 is located above the magnetic plate, and the electromagnet 1 is located below the magnetic plate, an engagement mechanism is provided between the outer wall of the contact lever and the inner wall of the action lever, and the upper end of the contact lever extends from the action lever to abut against the action mechanism.

[0014] According to the above embodiment, the engagement mechanism includes a plurality of engagement holes spaced apart vertically on the inner wall of the action lever, and a mounting disk provided on the contact lever, an elastic lever is provided on the mounting disk, an engagement ball is provided on the elastic lever, the engagement ball and the engagement hole are engaged and fitted, and a spring 2 is fixed between the bottom of the contact lever and the top of the support plate.

[0015] According to the above embodiment, a mounting mechanism is provided on the outer wall of the fixing plate, the mounting mechanism includes a mounting plate, a gasket, and a bolt, the mounting plate is fixed to the fixing plate, an oblong hole is provided in the mounting plate, the threaded rod of the bolt passes through the gasket and the oblong hole and is fixed to the mounting member, a limiting mechanism 1 that limits the bolt is provided on the mounting plate, and a guard is provided to cover the outside of the nut of the bolt.

[0016] According to the above embodiment, a limiting groove is provided on the outer circle of the threaded rod of the bolt, the limiting mechanism 1 includes a screw, a threaded block, and a limiting rod symmetrically provided 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 provided in the mounting plate, and the other end of the threaded block is fixedly connected to the limiting rod, which extends into the oval hole and engages with the limiting groove, and the mounting plate is provided with a limiting mechanism 2 for limiting the screw.

[0017] According to the above embodiment, an insertion hole is provided on the outer circle of the threaded rod of the screw, the limiting mechanism 2 includes an insertion rod, the lower end of the insertion rod engages with the insertion hole, and the upper end of the insertion rod extends from the mounting plate, and the insertion rod is slidably connected to the mounting plate.

[0018] According to the above embodiment, a limiting step is provided on the outer wall of the end of the insertion rod close to the insertion hole, and the spring 1 is fixed between the limiting step and the inner wall of the attachment plate.

[0019] According to the above embodiment, the elastic engagement ball is provided on the inner wall of the guard, and the engagement groove is provided on the outer wall of the nut of the bolt, and the elastic engagement ball is engaged and fitted into the engagement groove. Effect of the Invention

[0020] The present invention has a rational structure, in which the temperature-sensing cover fixes the temperature-sensing sheet in the cavity of the base and closes the opening of the base, so that the whole structure is easy to assemble and has high reliability. [Brief description of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of an entire closed type temperature control device in Example 1. FIG. [Diagram 2] FIG. 2 is a schematic cross-sectional view of a closed type temperature control device in the first embodiment. [Diagram 3] FIG. 2 is an exploded schematic view of the closed type temperature control device in the first embodiment. [Figure 4] FIG. 11 is a schematic diagram of the entire closed type temperature control device in the second embodiment. [Diagram 5] FIG. 11 is a schematic cross-sectional view of a closed type temperature control device in Example 2. [Figure 6] FIG. 11 is a schematic diagram of a fine adjustment mechanism in the second embodiment. [Figure 7] FIG. 6 is an enlarged schematic view of part A in FIG. 5. [Figure 8] FIG. 11 is a schematic diagram of an attachment mechanism in the third embodiment. [Figure 9] FIG. 9 is an enlarged schematic view of part B in FIG. [Figure 10] FIG. 9 is an enlarged schematic view of part C in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, the technical aspects of the present invention will be described with reference to the drawings and examples. Example 1

[0023] As shown in Figures 1 to 3, the sealed temperature control device according to the present invention includes a ceramic box 1 and a base 11, the base 11 has a cavity structure with an opening, the base 11 and the ceramic box 1 are fixedly connected, a guide hole 5 is provided between the base 11 and the ceramic box 1, a temperature-sensitive sheet 2 is provided in the base 11, an action mechanism 3 is provided in the ceramic box 1, an action lever 21 that connects the temperature-sensitive sheet 2 and the action mechanism 3 is provided in the guide hole 5, and a temperature-sensitive cover 6 is provided at the opening of the base 11. According to the configuration of the present invention, the action mechanism 3 includes a power receiving piece, one end of which is fixedly connected to one of the power receiving terminals 31, and the other end of which is detachably connected to the other of the power receiving terminals 31 by a connecting elastic piece 9, and the temperature-sensitive sheet 2 senses the temperature of the temperature-sensitive cover 6, jumps and deforms, and drives the power receiving piece via the action lever 21 to break the circuit. The temperature-sensitive sheet 2 of the present invention is sealed in the cavity of the base 11 by the temperature-sensitive cover 6, the temperature-sensitive cover 6 and the base 11 define the position of the temperature-sensitive sheet 2, and the cavity of the base 11 allows deformation of the temperature-sensitive sheet 2. The temperature-sensitive cover 6 closes the opening of the base 11 to form a sealed configuration, the ceramic box 1 is manufactured using a high-temperature resistant ceramic material, the temperature-sensitive cover 6 can increase the structural strength of the base 11, and the sealed configuration ensures the electrical safety of the mechanism within the ceramic box 1.

[0024] In this embodiment, the temperature-sensing cover 6 is fitted into the opening of the base 11 to seal the opening, and protrusions are formed on the inner surface of the temperature-sensing cover 6 to position and fit onto both ends of the temperature-sensing sheet 2. According to the configuration of the present invention, the temperature-sensing sheet 2 employs a rectangular dome structure, which deforms and inverts the curved surface at a critical temperature, and the center of the inverted arc surface presses the action lever 21.

[0025] In this embodiment, the temperature-sensitive sheet 2 includes a bimetal 22 and an energy storage steel plate 23, the bimetal 22 and the energy storage steel plate 23 are all the same in shape and size, the bimetal 22 is laminated on the energy storage steel plate 23, the bimetal 22 is abutted and connected to the temperature-sensitive cover 6, and both ends of the action lever 21 are abutted and connected to the energy storage steel plate 23 of the temperature-sensitive sheet 2 and the action mechanism 3, respectively. According to the configuration of the present invention, the preferred temperature-sensitive sheet 2 is provided with the energy storage steel plate 23, and when the temperature of the application environment exceeds a set temperature, the bimetal 22 deforms and presses the center of the arc surface of the energy storage steel plate 23 to reverse the energy storage steel plate 23, and the energy storage steel plate 23 drives the action mechanism 3 to cut off the circuit, and when the temperature drops after a power outage, the bimetal 22 automatically resets, but the energy storage steel plate 23 does not automatically reset, so it is necessary to check the electrical appliance and reset it by replacing the temperature-sensitive sheet 2. The temperature-sensitive sheet 2 is composed of action sheets with two kinds of performance, and the performance of the materials of the bimetal 22 and the energy storage steel plate 23 may be selected according to the application environment, thereby expanding the range of use of the thermostat.

[0026] In addition, the temperature-sensing sheet 2 of the present invention is of a single-interruption design, that is, the deformation at the critical temperature cannot be automatically recovered, and the thermostat needs to be disassembled to recover or replace the temperature-sensing sheet 2, and the groove 15 is used to rivet the temperature-sensing cover 6 to the base 11.

[0027] In this embodiment, the ceramic box 1 has a cavity structure with an open bottom, the action mechanism 3 includes two power receiving terminals 31, limiting posts 16 are provided at both ends of the cavity of the ceramic box 1, the power receiving terminals 31 are provided with engagement holes 32, the two power receiving terminals 31 are drawn out from both ends of the ceramic box 1, the power receiving terminals 31 and the ceramic box 1 are fitted and connected by the limiting posts 16 and the engagement holes 32, a connecting elastic piece 9 is connected between the two power receiving terminals, and the connecting elastic piece 9 is provided with an action point 10 for abutting and connecting with the action lever 21. According to the configuration of the present invention, the power receiving terminal 31 is fixed by the limiting posts 16 and the connecting elastic piece 9 is provided with the action point 10, so that the contact effect between the action lever 21 and the connecting elastic piece 9 is improved, unnecessary sliding is avoided, and the circuit interruption effect is more stable.

[0028] In this embodiment, fixing plates 4 are symmetrically provided on both sides of the base 11. According to the configuration of the present invention, the fixing plates 4 make it easy to fix the base 11 to a corresponding device, and assembly is facilitated. Example 2

[0029] As shown in Figures 4 to 7, a fine adjustment mechanism 13 capable of finely adjusting the action stroke of the action lever 21 is provided within the action lever 21. According to the configuration of the present invention, the fine adjustment mechanism 13 is added within the action lever 21, and this fine adjustment mechanism 13 can finely adjust the action stroke of the action lever 21. As a result, when using a conventional sealed type temperature control device, due to the influence of factors such as the characteristics of the temperature-sensitive sheet 2 itself, if used for a long period of time, the action of the action lever 21 is limited, and the power receiving piece cannot be reliably cut off, which is a problem.

[0030] In this embodiment, the fine adjustment mechanism 13 includes a contact lever 131, a support plate 132, a guide lever 133, a magnetic plate 134, an electromagnet 1136, and an electromagnet 21361, the support plate 132 is fixed to the inner wall of the action lever 21, the lower end of the guide lever 133 is fixed to the magnetic plate 134, the upper end of the guide lever 133 penetrates the support plate 132 and is fixed to the bottom of the contact lever 131, and the guide lever 133 is slidably connected to the support plate 132. The electromagnet 1136 and the electromagnet 21361 are fixed to the inner wall of the action lever 21 at intervals, the electromagnet 21361 is located above the magnetic plate 134, and the electromagnet 1136 is located below the magnetic plate 134. An engagement mechanism is provided between the outer wall of the contact lever 131 and the inner wall of the action lever 21, and the upper end of the contact lever 131 extends from the action lever 21 to abut against the action mechanism 3. According to the configuration of the present invention, when the action of the action lever 21 is limited due to the influence of factors such as the characteristics of the temperature-sensitive sheet 2 itself (for example, when the deformation effect of the temperature-sensitive sheet 2 is deteriorated), and the power receiving piece cannot be reliably cut off, the electromagnet 21361 is activated to magnetically attract the magnetic plate 134, thereby moving the contact lever 131 fixed to the magnetic plate 134 and the guide lever 133 upward, so that the contact lever 131 contacts the power receiving piece and pushes open the power receiving piece, thereby ensuring that the circuit is effectively cut off. In addition, the electromagnet 1136 may be slidably connected to the magnetic plate 134 to magnetically attract the magnetic plate 134, thereby moving the contact lever 131 fixed to the magnetic plate 134 and the guide lever 133 downward, so that the connection elastic piece 9 is normally reset and the circuit is again conductive. In practical application, the guide lever 133 is slidably connected to the support plate 132, which acts to limit and guide the guide lever 133, making the up and down movement of the contact lever 131 more stable.

[0031] In this embodiment, the engagement mechanism includes a plurality of locking holes 137 provided at intervals in the vertical direction on the inner wall of the action lever 21, and a mounting disk 138 provided on the contact lever 131, an elastic lever 139 is provided on the mounting disk 138, an engagement ball 1391 is provided on the elastic lever 139, the engagement ball 1391 is engaged with the locking hole 137, and a spring 2135 is fixed between the bottom of the contact lever 131 and the top of the support plate 132. According to the configuration of the present invention, the engagement ball 1391 is engaged with the locking hole 137, thereby realizing engagement when the action lever 21 moves up and down, and the position of the contact lever 131 is precisely controlled. More specifically, as shown in FIG. 6, the engagement ball 1391 engages and fits into one side of the engagement hole 137, and when the contact lever 131 moves up and down, the inner wall of the action lever 21 presses against the engagement ball 1391, deforming the elastic lever 139 into a compressed state, and the engagement ball 1391 disengages from the engagement hole 137. When the engagement ball 1391 corresponds to the other position of the engagement hole 137, the elastic lever 139 recovers its deformation, and the repulsive force causes the engagement ball 1391 to engage with the other side of the engagement hole 137.

[0032] In this embodiment 2, compared to embodiment 1, a fine adjustment mechanism 13 capable of finely adjusting the action stroke of the action lever 21 is added inside the action lever 21. The remaining structure and principles are the same as those of embodiment 1, so no further description will be given. Example 3

[0033] 8 to 10, the mounting mechanism 12 is provided on the outer wall of the fixing plate 4, and the mounting mechanism 12 includes a mounting plate 121, a gasket 123, and a bolt 124. The mounting plate 121 is fixed to the fixing plate 4, an oval hole 122 is provided in the mounting plate 121, the threaded rod of the bolt 124 penetrates the gasket 123 and the oval hole 122 and is fixed to the mounting member, the mounting plate 121 is provided with a limiting mechanism 1 that limits the bolt 124, and a guard 1211 is provided on the outside of the nut of the bolt 124. According to the configuration of the present invention, when fixing the sealed temperature control device, the threaded rod of the bolt 124 penetrates the gasket 123 and the oval hole 122 and is fixed to the mounting member, and here, the oval hole 122 makes it easy to adjust the position of the bolt 124, and it becomes easy to assemble the bolt 124 with the screw hole and nut receiver of the mounting member later and use it, and it is easy to operate. The mounting plate 121 is provided with a limiting mechanism 1 for limiting the bolt 124, which makes it possible to prevent problems such as the bolt 124 becoming displaced and loose due to vibration. A guard 1211 is provided on the outside of the nut of the bolt 124 to protect the bolt 124, prevent problems such as rusting of the bolt 124, and extend its service life.

[0034] In this embodiment, a limiting groove 125 is provided on the outer circle of the threaded rod of the bolt 124, and the limiting mechanism 1 includes a screw 127, a threaded block 128, and a limiting rod 129 that are symmetrically provided on the mounting plate 121, the threaded rod of the screw 127 is screwed into one end of the threaded block 128, the threaded block 128 is slidably provided within the mounting plate 121, and the other end of the threaded block 128 is fixedly connected to the limiting rod 129, which extends into the oval hole 122 and engages with the limiting groove 125, and the mounting plate 121 is provided with a limiting mechanism 2 for limiting the screw 127. According to the configuration of the present invention, when the bolt 124 is fitted into the threaded hole of the mounting member and tightened, the screw 127 is turned to slide the threaded block 128 relative to the mounting plate 121, and the limiting rod 129 extends into the oval hole 122 to engage and fit into the limiting groove 125, thereby making it possible to avoid problems such as the bolt 124 becoming misaligned and loosened due to vibration. When removing the bolt 124, first turn the screw 127 to drive the threaded block 128 and move the limiting rod 129 out of the limiting groove 125, and then turn the bolt 124.

[0035] In this embodiment, an insertion hole 1271 is provided on the outer circle of the threaded rod of the screw 127, and the limiting mechanism 2 includes an insertion rod 126, the lower end of which is engaged and fitted into the insertion hole 1271, and the upper end of the insertion rod 126 is provided extending from the mounting plate 122, and the insertion rod 126 is slidably connected to the mounting plate 122. According to the configuration of the present invention, the screw 127 is turned to drive the threaded block 128, and the limiting rod 129 extends and engages with the limiting groove 125, and then the lower end of the insertion rod 126 is engaged and fitted into the insertion hole 1271, thereby realizing engagement with the screw 127, and avoiding the problem of the screw 127 being displaced due to vibration. When removing the screw 127, the insertion rod 126 is pulled out of the insertion hole 1271, and then the screw 127 is turned.

[0036] In this embodiment, a limiting step 1261 is provided on the outer wall of the end of the insertion rod 126 close to the insertion hole 1271, and a spring 11210 is fixed between the limiting step 1261 and the inner wall of the mounting plate 122. According to the configuration of the present invention, the insertion rod 126 is always positioned in the insertion hole 1271 due to the elastic force of the spring 11210, and when it is necessary to turn the screw 127, the insertion rod 126 is first extracted from the insertion hole 1271, and at this time, when the spring 11210 is compressed and the turning of the screw 127 is stopped, the insertion rod 126 is released, and the insertion rod 126 is inserted into the insertion hole 1271 again due to the elastic force of the spring 11210.

[0037] In this embodiment, an elastic engaging ball 1212 is provided on the inner wall of the guard 1211, an engaging groove 1213 is provided on the outer wall of the nut of the bolt 124, and the elastic engaging ball 1212 engages and fits into the engaging groove 1213. According to the configuration of the present invention, the covering effect when the guard 1211 is covered on the outer wall of the nut of the bolt 124 is improved, and peeling is prevented. More specifically, when the guard 1211 is fitted into the outer wall of the nut of the bolt 124, the outer wall of the nut of the bolt 124 presses and deforms the elastic engaging ball 1212, and the elastic engaging ball 1212 moves along the outer wall of the nut of the bolt 124 due to the action of force, and when the elastic engaging ball 1212 corresponds to the position of the engaging groove 1213, the elastic engaging ball 1212 recovers its deformation and enters into the engaging groove 1213, whereby the guard 1211 and the nut of the bolt 124 are engaged with each other.

[0038] In this embodiment 3, compared with the embodiment 1, a mounting mechanism 12 is additionally provided on the outer wall of the fixed plate 4, and the remaining structure and principle are all the same as those of the embodiment 1, so no further description will be given. The above are merely preferred embodiments of the present invention, and any equivalent changes or modifications made based on the structures, features and principles described in the scope of the patent application of the present invention shall be included in the scope of the patent application of the present invention. [Explanation of symbols]

[0039] 1 Ceramic Box 2. Temperature-sensitive sheet 3 Action mechanism 4 Fixed plate 5 Guide hole 6 Thermal cover 9 Connecting elastic piece 10 Action Points 11. Base 12 Attachment mechanism 121 Mounting plate 122 Oval hole 123 Gasket 124 volts 125 Restriction groove 126 Insertion Rod 1261 Limit Step 127 Screw 1271 Insertion hole 128 Threaded Block 129 Restriction Rod 1210 Spring 1 1211 Guard 1212 Elastic engagement ball 1213 Engagement groove 13 Fine adjustment mechanism 131 Contact Lever 132 Support plate 133 Guide lever 134 Magnetic plate 135 Spring 2 136 Electromagnet 1 1361 Electromagnet 2 137 Locking hole 138 Mounting disc 139 Elastic Lever 1391 Engagement ball 16 Restricted Post 21 Action lever 22 Bimetal 23 Energy storage steel plate 31 Power receiving terminal 32 Engagement hole

Claims

1. A sealed temperature control device including a ceramic box and a base, The base has a cavity structure with an opening, the base and the ceramic box are fixedly connected, and a guide hole is provided between the base and the ceramic box; A temperature-sensitive sheet is provided in the base, an action mechanism is provided in the ceramic box, and an action lever that connects the temperature-sensitive sheet and the action mechanism is provided in the guide hole, A temperature-sensitive cover is provided at the opening of the base, A sealed temperature control device, characterized in that a fine adjustment mechanism capable of finely adjusting the action stroke of the action lever is provided within the action lever.

2. 2. The sealed temperature control device as described in claim 1, characterized in that the temperature-sensing cover is fitted into an opening of the base to seal the opening, and a protrusion is formed on the inner surface of the temperature-sensing cover to position and fit with both ends of the temperature-sensing sheet.

3. 2. The sealed temperature control device according to claim 1, wherein the temperature-sensing sheet includes a bimetal and an energy storage steel plate, the bimetal and the energy storage steel plate all having the same shape and size, the bimetal is laminated on the energy storage steel plate, the bimetal is abutted against and connected to the temperature-sensing cover, and both ends of the action lever are abutted against and connected to the energy storage steel plate of the temperature-sensing sheet and the action mechanism, respectively.

4. The sealed temperature control device of claim 1, characterized in that the ceramic box has a cavity structure with an open bottom, the action mechanism includes two receiving terminals, limiting posts are provided at both ends of the cavity of the ceramic box, engaging holes are provided in the receiving terminals, the two receiving terminals are pulled out from both ends of the ceramic box, the receiving terminals and the ceramic box are fitted and connected by the limiting posts and the engaging holes, a connecting elastic piece is movably connected between the two receiving terminals, and the connecting elastic piece is provided with an action point for abutting and connecting to an action lever.

5. 2. The sealed temperature control device according to claim 1, wherein fixing plates are symmetrically provided on both sides of the base.

6. The fine adjustment mechanism includes a contact lever, a support plate, a guide lever, a magnetic plate, an electromagnet 1, and an electromagnet 2, the support plate is fixed to the inner wall of the action lever, the lower end of the guide lever is fixed to the magnetic plate, the upper end of the guide lever passes through the support plate and the electromagnet 2 and is fixed to the inner wall of the action lever at intervals, the electromagnet 2 is located above the magnetic plate, and the electromagnet 1 is located below the magnetic plate, an engagement mechanism is provided between the outer wall of the contact lever and the inner wall of the action lever, and the upper end of the contact lever extends from the action lever to abut against the action mechanism.

7. The sealed temperature control device described in claim 6, characterized in that the engagement mechanism includes a plurality of engagement holes spaced apart vertically on the inner wall of the action lever and a mounting disk provided on the contact lever, an elastic lever is provided on the mounting disk, an engagement ball is provided on the elastic lever, the engagement ball and the engagement hole are engaged and fitted together, and a spring 2 is fixed between the bottom of the contact lever and the top of the support plate.

8. 6. The sealed temperature control device according to claim 5, characterized in that an attachment mechanism is provided on an outer wall of the fixing plate, the attachment mechanism includes an attachment plate, a gasket, and a bolt, the attachment plate is fixed to the fixing plate, an oblong hole is provided in the attachment plate, the threaded rod of the bolt passes through the gasket and the oblong hole and is fixed to the mounting member, a limiting mechanism 1 that limits the bolt is provided on the attachment plate, and a guard is provided on the outside of the nut of the bolt.

9. The sealed temperature control device according to claim 8, characterized in that a limiting groove is provided on the outer circle of the threaded rod of the bolt, the limiting mechanism 1 includes a screw, a threaded block and a limiting rod symmetrically provided on the mounting plate, the threaded rod of the screw is screw-connected to one end of the threaded block, the threaded block is slidably provided in the mounting plate, the other end of the threaded block is fixedly connected to the limiting rod, the limiting rod extends into the oval hole and engages with the limiting groove, and the mounting plate is provided with a limiting mechanism 2 for limiting the screw.

10. The sealed temperature control device according to claim 9, characterized in that an insertion hole is provided on the outer circle of the threaded rod of the screw, the limiting mechanism 2 includes an insertion rod, the lower end of the insertion rod engages with the insertion hole, the upper end of the insertion rod extends from the mounting plate, and the insertion rod is slidably connected to the mounting plate.

11. 11. The sealed temperature control device according to claim 10, wherein a limiting step is provided on the outer wall of the end of the insertion rod close to the insertion hole, and a spring is fixed between the limiting step and the inner wall of the mounting plate.

12. 9. The sealed temperature control device according to claim 8, wherein an elastic engagement ball is provided on an inner wall of the guard, an engagement groove is provided on an outer wall of the nut of the bolt, and the elastic engagement ball is engaged and fitted into the engagement groove.

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