An adjustable temperature controller with multiple access points

Abstract

This utility model discloses an adjustable temperature controller with multiple access terminals, comprising a connecting post, a temperature-sensing bimetallic strip, a temperature-adjusting metal strip, a fixed contact 1, a fixed contact 2, and a movable contact. The temperature-sensing bimetallic strip, temperature-adjusting metal strip, fixed contact 1, fixed contact 2, and movable contact are respectively fixed to the connecting post and separated by a ceramic ring. The temperature-sensing bimetallic strip has a protruding end 1 away from the connecting post, and the temperature-adjusting metal strip has a protruding end 2 away from the connecting post. A ceramic ferrule is pressed between protruding ends 1 and 2. One end of the movable contact is fixedly connected to protruding end 2 of the temperature-adjusting metal strip, and the other end extends towards the connecting post and is fixedly mounted with a movable contact. Fixed contact 1 and fixed contact 2 are respectively fixedly mounted with fixed contact 1 and fixed contact 2. The movable contact is located between fixed contact 1 and fixed contact 2 and can abut against either fixed contact 1 or fixed contact 2 independently. This utility model can simultaneously control the energization and disconnection of two sets of circuits, offering stronger functionality, higher control precision, and a wider range of applications.

Description

Technical Field

[0001] This utility model relates to the field of temperature controller technology, and in particular to an adjustable temperature controller with multiple access terminals. Background Technology

[0002] The working principle of a thermostat is to sense changes in ambient temperature through a temperature sensor, process the data through a circuit, and control the on / off state of the actuator to regulate the operation of heating or cooling equipment and maintain the temperature within the set range. Mechanical thermostats, on the other hand, mainly sense temperature changes through a physical structure and drive switch contacts to achieve automatic temperature control.

[0003] Chinese Patent No. CN 107904906 A discloses a thermostat for an electric iron. The key technical point is that the heating of the electric iron causes the bimetallic strip to deform, which forces the ceramic chip abutting the free end of the bimetallic strip and the moving contact piece abutting the other end of the ceramic chip to move upward, thereby driving the moving contact piece to move, disconnecting the connection between the moving contact piece and the stationary contact piece, and stopping the electric iron from heating.

[0004] In the above scheme, the temperature controller achieves the contact and disconnection of the moving contact and the stationary contact by deforming the bimetallic strip through temperature control. This temperature controller can only control one set of circuits to be energized or disconnected, and cannot control multiple sets of circuits at the same time. Its structure and function are relatively simple, and it is only suitable for control of relatively simple circuits, with limited applicable scenarios.

[0005] Therefore, this utility model provides a new technical solution to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable temperature controller with multiple access terminals. This temperature controller can simultaneously control two sets of circuits to be energized and disconnected respectively. It has a simple structure but strong functions, higher control precision, and a wider range of applications, and can meet the needs of various application scenarios.

[0007] The present invention adopts the following technical solution:

[0008] An adjustable temperature controller with multiple access terminals includes a connecting post, a temperature-sensing bimetallic strip, a temperature-adjusting metal strip, a fixed contact plate one, a fixed contact plate two, and a moving contact plate;

[0009] The temperature-sensing bimetallic strip, the temperature-regulating metal strip, the fixed contact plate one, the fixed contact plate two, and the moving contact plate are respectively fixedly installed on the connecting column and separated by a ceramic ring;

[0010] The temperature-sensing bimetallic strip has a protruding end one that is away from the connecting post, and the temperature-regulating metal strip has a protruding end two that is away from the connecting post. A ceramic chip is pressed and installed between the protruding end one and the protruding end two.

[0011] One end of the movable contact piece is fixedly connected to the extended end of the temperature regulating metal piece, and the other end extends toward the connecting post and is fixedly installed with a movable contact.

[0012] Fixed contact one and fixed contact two are respectively fixedly installed on the fixed contact plate one and fixed contact two;

[0013] The moving contact is located between fixed contact one and fixed contact two, and can abut against either fixed contact one or fixed contact two independently.

[0014] The present invention is further configured such that the fixed contact plate is fixedly installed above the temperature-sensing bimetallic strip and separated by a ceramic ring, and one end of the fixed contact plate is fixedly connected to a power terminal, while the other end extends away from the connecting post and is fixedly installed with a fixed contact point.

[0015] The present invention is further characterized in that the fixed contact plate two is fixedly installed above the fixed contact plate one and separated by a ceramic ring, and the fixed contact plate two is fixedly connected to one end of the connecting post and the other end extends in a direction away from the connecting post and is fixedly installed with the fixed contact point two.

[0016] The present invention is further characterized in that the temperature-regulating metal sheet is fixedly installed above the fixed contact sheet two and separated by a mica sheet, and the temperature-regulating metal sheet is fixedly connected to a power terminal three at one end of the connecting column.

[0017] The present invention is further configured such that the spiral temperature regulating device is fixedly installed on the top of the connecting column and located above the second protruding end of the temperature regulating metal sheet, and the ceramic column on the spiral temperature regulating device can be adjusted up and down and abuts against the upper end of the second protruding end.

[0018] The present invention is further configured such that a through limiting hole 1 is provided at the end of the protruding end of the temperature-sensing bimetallic strip, and a limiting hole 2 is provided at the position where the moving contact piece is fixedly connected to the temperature-regulating metal piece, which is vertically aligned with the limiting hole 1. The lower end of the ceramic chip is abutted and installed in the limiting hole 1, and the upper end is abutted and installed in the limiting hole 2.

[0019] The beneficial effects of this utility model are as follows: By setting a temperature-regulating metal sheet, a fixed contact plate one, and a fixed contact plate two to be connected to the power connection terminal three, the power connection terminal one, and the power connection terminal two respectively, this utility model can simultaneously control the energization and disconnection of two sets of circuits, thus enhancing functionality and broadening the application range. Secondly, a support plate with a support column can be installed at the lower end of the temperature-sensing bimetallic strip. When the temperature is too low, the support column can effectively prevent the temperature-sensing bimetallic strip from deforming excessively downwards, thereby improving the control accuracy and stability of the temperature controller. Attached Figure Description

[0020] Figure 1This is a schematic diagram of an adjustable temperature controller with multiple access terminals in Embodiment 1.

[0021] Figure 2 This embodiment shows the control circuit diagram of an adjustable temperature controller with multiple access terminals.

[0022] Figure 3 This is a schematic diagram of the structure of an adjustable temperature controller with multiple access terminals in Embodiment 2.

[0023] Figure 4 for Figure 3 An enlarged sectional view at point A in the diagram.

[0024] Reference numerals: 1. Connecting post; 2. Temperature-sensing bimetallic strip; 21. Extended end 1; 22. Ceramic chip; 23. Limiting hole 1; 3. Fixed contact piece 1; 31. Fixed contact point 1; 32. Power connection terminal 1; 4. Moving contact piece; 41. Limiting hole 2; 5. Fixed contact piece 2; 51. Fixed contact point 2; 52. Power connection terminal 2; 6. Temperature-regulating metal strip; 61. Extended end 2; 62. Power connection terminal 3; 7. Spiral temperature regulating device; 71. Ceramic column; 72. Adjusting rod; 8. Support piece; 81. Support column; 82. Adjusting column; 9. Ceramic ring; 10. Mica sheet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] This embodiment discloses an adjustable temperature controller with multiple access terminals, referring to... Figure 1 As shown, it mainly includes a connecting post 1, a temperature-sensing bimetallic strip 2, a temperature-regulating metal strip 6, a fixed contact 3, a fixed contact 5, and a moving contact 4. The temperature-sensing bimetallic strip 2, the temperature-regulating metal strip 6, the fixed contact 3, the fixed contact 5, and the moving contact 4 are respectively fixedly installed on the connecting post 1 and separated by a ceramic ring 9.

[0028] Reference Figure 1As shown, the temperature-sensing bimetallic strip 2 has an extended end 21 away from the connecting post 1, and the other end is fixedly installed at the bottom of the connecting post 1. A limiting hole 23 that runs vertically through the output end 21 of the temperature-sensing bimetallic strip 2 is provided at the end of the output end 21. A temperature-regulating metal strip 6 is fixedly installed at the upper position of the connecting post 1. The temperature-regulating metal strip 6 has an extended end 61 away from the connecting post 1. The extended end 61 of the temperature-regulating metal strip 6 is bent downward near the end and fixedly connected to a movable contact piece 4. A limiting hole 42 that runs vertically through the connection between the temperature-regulating metal strip 6 and the movable contact piece 4 is provided at the position where the temperature-regulating metal strip 6 and the movable contact piece 4 are fixedly connected. The limiting hole 23 and the limiting hole 42 are aligned vertically. A ceramic chip 22 is embedded between the limiting hole 23 and the limiting hole 42. The ceramic chip 22 is cylindrical in the middle and conical at both ends and can be embedded into the limiting hole 23 and the limiting hole 42 respectively, realizing the connection between the temperature-sensing bimetallic strip 2 and the temperature-regulating metal strip 6, forming a pressure support limiting.

[0029] A ceramic ring 9 is fixedly installed on the upper end of the temperature-sensing bimetallic strip 2. A conductive terminal 32 and a fixed contact 3 are fixedly installed on the upper end of the ceramic ring 9. The terminal 32 is located at the lower end of the fixed contact 3 and extends outward to connect to the circuit. The fixed contact 3 extends away from the connecting post 1 and a fixed contact 31 is installed on the upper surface of the fixed contact 3.

[0030] A ceramic ring 9 is fixedly installed on the upper end of the fixed contact 3. A conductive fixed contact 5 and a power terminal 52 are fixedly installed on the upper end of the ceramic ring 9. The power terminal 52 is located on the upper end of the fixed contact 3 and extends outward to connect to the circuit. The fixed contact 3 extends away from the connecting post 1 to be flush with the fixed contact 3. A fixed contact 51 is installed on the lower end of the fixed contact 3, which is vertically opposite to the fixed contact 31.

[0031] One end of the movable contact 4 is fixedly connected to the extended end 61 of the temperature regulating metal sheet 6, and the other end extends towards the connecting post 1 between the fixed contact 3 and the fixed contact 5 and is equipped with a movable contact 41. The movable contact 41 is located between the fixed contact 31 and the fixed contact 51 and can abut against either the fixed contact 31 or the fixed contact 51.

[0032] The temperature-regulating metal sheet 6 is fixedly installed above the fixed contact 5 and its lower end is separated by the mica sheet 10. The upper end of the temperature-regulating metal sheet 6 is connected to the outwardly extending electrical terminal 62. The thickness of the mica sheet 10 is thinner than that of the ceramic ring 9, which allows the fixed contact 5 and the temperature-regulating metal sheet 6 to be closer together.

[0033] A ceramic ring 9 is fixedly installed above the third electrical terminal 62. Then, a spiral temperature regulating device 7 is fixedly installed at the top of the connecting column 1. The spiral temperature regulating device 7 is located above the second protruding end 61 of the temperature regulating metal sheet 6. The ceramic column 71 on the spiral temperature regulating device 7 can be adjusted by rotation to move the ceramic column 71 up and down to abut against the upper end face of the second protruding end 61 of the temperature regulating metal sheet 6. The ceramic column 71 can be adjusted up and down by adjusting the adjusting rod 72 on the spiral temperature regulating device 7, so as to calibrate the temperature controller at any time.

[0034] Reference Figure 2 As shown, the temperature controller in this embodiment can be connected to the circuit via power terminals 32, 52, and 62 for temperature control and adjustment. When connected to the circuit, under the premise that L1 remains constantly lit, L2 will not light up when the heater is powered on; L2 will light up when the power is off and the heater is not working.

[0035] In use, adjust the adjusting rod 72 on the screw adjusting device 7 so that the ceramic column 71 at the lower end of the screw adjusting device 7 abuts against the upper end of the temperature regulating metal plate 6, so that the moving contact 41 on the moving contact plate 4 contacts and abuts against the fixed contact 31 on the fixed contact plate 3. At this time, the heater is in the conducting state, L1 is always lit, and the heater is located next to the temperature sensing bimetallic strip 2. When the temperature is too high, the temperature sensing bimetallic strip 2 is heated and deformed upward, causing the ceramic ferrule 22 to press upward against the moving contact plate 4, so that the moving contact 41 on the moving contact plate 4 contacts the fixed contact 31 on the fixed contact plate 3. When contact 31 separates from the moving contact, it then contacts and abuts against the fixed contact 51 on the fixed contact 5. At this time, L1 is constantly lit, the heater is in the off state, and L2 is constantly lit. When the temperature of the temperature-sensing bimetallic strip 2 drops, the temperature-sensing bimetallic strip 2 returns to its original shape, the moving contact 41 separates from the fixed contact 51, and then contacts the fixed contact 31, the circuit is reconnected, the heater works normally, L1 is constantly lit, and L2 is not lit. This process realizes that while one circuit is disconnected, another circuit is connected. The structure is simple and the function is strong. It is easy to adjust and convenient to use.

[0036] Example 2

[0037] This embodiment discloses an adjustable temperature controller with multiple access terminals. Based on Embodiment 1, and further referring to... Figure 2 , Figure 3 The following explanation is provided.

[0038] In Example 2, refer to Figure 2 and Figure 3 As shown, a support plate 8 is fixedly connected to the lower end of the temperature-sensitive bimetallic strip 2. The support plate 8 extends towards the end away from the connecting post 1 to be approximately parallel to the temperature-sensitive bimetallic strip 2. A support post 81 is integrally connected to the upper end face of the support plate 8. The support post 81 is located directly below the limiting hole 23 on the temperature-sensitive bimetallic strip 2 and maintains a certain gap with the lower end face of the temperature-sensitive bimetallic strip 2.

[0039] When the ambient temperature is too low, the temperature-sensing bimetallic strip 2 is prone to downward deformation. The support column 81 on the support plate 8 can abut against the lower end of the temperature-sensing bimetallic strip 2 to prevent it from deforming excessively downward, affecting the sensitivity of the thermostat adjustment, improving the adjustment accuracy, and preventing damage to the thermostat. The support column 81 does not affect the upward bending of the temperature-sensing bimetallic strip 2, so under normal circumstances, it will not interfere with the temperature-sensing bimetallic strip 2.

[0040] In addition, the support column 81 has a hollow inner circumference structure, and an adjusting column 82 is threadedly connected inside the center of the support column 81. The adjusting column 81 can move up and down by axial rotation and can abut the lower end of the ceramic chip 22.

[0041] During installation, the upper end of the ceramic chip 22 is bonded and fixed to the temperature-regulating metal sheet 6 with adhesive, thus limiting its position. The lower end of the ceramic chip 22 is pointed and inserted into the limiting hole 23 on the temperature-sensing bimetallic strip 2. The tapered surface of the ceramic chip 22's conical tip and the limiting hole 23 achieve positioning. The pointed end of the ceramic chip 22 partially protrudes from the underside of the temperature-regulating metal sheet 6, extending to the lower end of the limiting hole 23.

[0042] The adjusting column 82, which is internally threaded to the support column 81, can be adjusted up and down by axial rotation. After the adjusting column 82 is adjusted downward, the upper end of the support column 81 and the lower end of the ceramic chip 22 are separated from each other, and there is no contact with the ceramic chip 22. The temperature-sensing bimetallic strip 2 can normally achieve the control of the temperature controller through bending deformation.

[0043] When the adjusting column 82 is adjusted upwards by the thread, the adjusting column 82 can abut against the ceramic element 22 by adjusting upwards, causing the ceramic element 22 and the temperature regulating metal sheet 6 to deform up and down, forming an effect similar to the upward bending deformation of the temperature sensing bimetallic strip 2, so that the moving contact 41 is simultaneously disconnected from the fixed contact 1 31 and the fixed contact 2 51, so that L1 remains constantly lit, L2 is not lit, and the heater stops working.

[0044] After the adjusting column 82 is adjusted upwards, the lower end of the ceramic ferrule 22 will separate from the temperature-sensing bimetallic strip 2, and at this time, it will not have an adverse effect of pressing and bending the temperature-sensing bimetallic strip 2. In addition, in order to maintain the contact stability between the adjusting column 82 and the tip of the ceramic ferrule 22, a groove can be preset on the upper end surface of the adjusting column 82, and the tip of the ceramic ferrule 22 can abut into the groove to form a limit.

[0045] By actively adjusting the adjusting column 82, the temperature regulating metal strip 6 can be adjusted upward and deformed, switching the temperature controller to a fixed state. At this time, it is not affected by the temperature sensing of the temperature sensing bimetallic strip 2, ensuring that the heating wire in the circuit is always in the cut-off state, so that the circuit can be repaired and can be adapted to more environments.

[0046] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An adjustable temperature controller with multiple access terminals, characterized in that, It includes a connecting post (1), a temperature-sensing bimetallic strip (2), a temperature-regulating metal strip (6), a fixed contact plate one (3), a fixed contact plate two (5), and a moving contact plate (4); The temperature-sensing bimetallic strip (2), the temperature-regulating metal strip (6), the fixed contact plate one (3), the fixed contact plate two (5), and the moving contact plate (4) are respectively fixedly installed on the connecting column (1) and separated by a ceramic ring (9); The temperature-sensing bimetallic strip (2) has an extended end (21) away from the connecting post (1), and the temperature-regulating metal strip (6) has an extended end (61) away from the connecting post (1). A ceramic chip (22) is pressed between the extended end (21) and the extended end (61). One end of the movable contact (4) is fixedly connected to the extended end (61) of the temperature regulating metal sheet (6), and the other end extends toward the connecting post (1) and is fixedly installed with a movable contact (41). Fixed contact one (3) and fixed contact two (5) are respectively fixedly installed with fixed contact one (31) and fixed contact two (51); The moving contact (41) is located between fixed contact one (31) and fixed contact two (51) and can abut against fixed contact one (31) or fixed contact two (51) alone.

2. The adjustable temperature controller with multiple access terminals according to claim 1, characterized in that, The fixed contact plate (3) is fixedly installed above the temperature-sensing bimetallic strip (2) and separated by a ceramic ring (9). One end of the fixed contact plate (3) is fixedly connected to the power terminal (32), and the other end extends away from the connecting post (1) and is fixedly installed with the fixed contact point (31).

3. The adjustable temperature controller with multiple access terminals according to claim 1, characterized in that, The fixed contact plate 2 (5) is fixedly installed above the fixed contact plate 1 (3) and separated by a ceramic ring (9). The fixed contact plate 2 (5) is fixedly connected to a power terminal 2 (52) at one end of the connecting post (1), and the other end extends away from the connecting post (1) and is fixedly installed with a fixed contact point 2 (51).

4. The adjustable temperature controller with multiple access terminals according to claim 1, characterized in that, The temperature-regulating metal sheet (6) is fixedly installed above the fixed contact sheet (5) and separated by the mica sheet (10). The temperature-regulating metal sheet (6) is fixedly connected to the power terminal (62) at one end of the connecting column (1).

5. The adjustable temperature controller with multiple access terminals according to claim 1, characterized in that, It also includes a spiral temperature control device (7), which is fixedly installed on the top of the connecting column (1) and located above the second (61) protruding end of the temperature control metal sheet (6). The ceramic column (71) on the spiral temperature control device (7) abuts against the upper end of the second (61) protruding end.

6. An adjustable temperature controller with multiple access terminals according to claim 5, characterized in that, The upper end of the spiral temperature regulating device (7) is equipped with an adjusting rod (72), and the ceramic column (71) can be controlled to move up and down by rotating the adjusting rod (72) axially.

7. An adjustable temperature controller with multiple access terminals according to claim 1, characterized in that, The end of the protruding end (21) of the temperature-sensing bimetallic strip (2) is provided with a through limiting hole (23). The position where the moving contact piece (4) is fixedly connected to the temperature-regulating metal piece (6) is provided with a limiting hole (42) that is aligned vertically with the limiting hole (23). The lower end of the ceramic chip (22) is abutted and installed in the limiting hole (23), and the upper end is abutted and installed in the limiting hole (42).

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