A probe-type thermostat

Abstract

The present invention relates to the technical field of temperature controllers, and more particularly to a novel probe-type temperature controller, which includes a bent bracket, a temperature-sensing probe assembly, a temperature adjustment assembly, a reed assembly, and a fixed contact assembly. The temperature-sensing probe assembly is horizontally installed at the first end of the bent bracket, and the temperature adjustment assembly is vertically installed in the middle of the second end of the bent bracket. There is an included angle α between the temperature-sensing probe assembly and the temperature adjustment assembly, and the angle range of α is -5° to 85°. There is an included angle β between the first end and the second end of the bent bracket, and β = 90° + α. The reed assembly and the fixed contact assembly are installed at the second end of the bent bracket. The moving contact of the reed assembly and the fixed contact of the fixed contact assembly are in corresponding contact or separation. The middle part of the reed assembly is in corresponding contact with the temperature adjustment assembly. The operating temperature of the reed assembly can be set or adjusted through the temperature adjustment assembly. The end elbow of the reed assembly is in corresponding contact or separation with the porcelain top of the temperature-sensing probe assembly. It has a low manufacturing cost and a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature controllers, and more particularly to a new type of probe-type temperature controller. Background Art

[0002] With the continuous improvement of people's living standards, electric grills, baking pans, electric hot pots, electric frying pans, deep fryers, and multi-functional cookware have become frequently used appliances in daily life. The probe-type temperature controller, also known as the probe-type temperature controller, insertion-type temperature controller, temperature adjustment rod, and temperature sensing rod, has a temperature sensing probe that is easy to approach the high-temperature part of the appliance, and its live parts are far from the high-temperature part of the appliance. Its temperature control effect and safety are better than those of the adjustable bimetal temperature controller, so its application is increasing day by day. However, due to the fact that the temperature adjustment component and the temperature sensing probe component of the traditional structure of the probe-type temperature controller are at a right angle, when it is necessary to set the temperature adjustment component and the temperature sensing probe component in a parallel or other angular positions, it is necessary to add other transmission mechanism components such as gears, grooved pulleys, universal joints, and flexible shafts to change the direction, resulting in problems such as an increase in the number of parts of the appliance, a complex structure, a large occupied angle space, a high production difficulty, an increase in cost, and an increase in usage failures. As a result, the application range of the probe-type temperature controller is greatly limited. Therefore, there is an urgent need for a new probe-type temperature controller that can solve the above problems with its temperature adjustment shaft parallel or at other non-vertical angles to the temperature sensing probe according to the application scenario. Summary of the Invention

[0003] In view of the above problems, the present invention provides a new type of probe-type temperature controller with a simple structure, low manufacturing cost, strong practicability, easy installation, and wide applicability. According to customer requirements, the included angle α between the temperature adjustment shaft and the temperature sensing probe can be any angle within the range of -5°

[0004] to 85°, including but not limited to -5° - 4.5°, -4°, -3.5°, -3°, -2.5°, -2°, -1.5°, -1°, -0.5°, 0°, 0.5°, 1°, 1.5°, 2°, 2.5°...... 85° for customized specifications to meet the requirements of various installation positions of the temperature controller in the appliance.

[0005] To achieve the above object, the technical solution applied in the present invention is as follows:

[0006] A new type of probe-type thermostat, comprising a bent-shaped bracket, a temperature-sensing probe assembly, a temperature adjustment assembly, a reed assembly, a fixed contact assembly, rivets, a first porcelain ring, a second porcelain ring, and a third porcelain ring. The temperature-sensing probe assembly is horizontally installed at the first end of the bent-shaped bracket, and the temperature adjustment assembly is vertically installed in the middle of the second end of the bent-shaped bracket. There is an included angle α between the temperature-sensing probe assembly and the temperature adjustment assembly, and the angle range of α is -5° to 85°. There is an included angle β between the first end and the second end of the bent-shaped bracket, and β = 90° + α. The reed assembly and the fixed contact assembly are isolated by the first porcelain ring, the second porcelain ring, and the third porcelain ring and then installed on the second end of the bent-shaped bracket through rivets. The moving contact of the reed assembly and the fixed contact of the fixed contact assembly are in corresponding contact or separation. The middle part of the reed assembly is in corresponding contact with the temperature adjustment assembly. The operating temperature of the reed assembly can be set or adjusted through the temperature adjustment assembly. The end elbow of the reed assembly is in corresponding contact or separation with the porcelain top of the temperature-sensing probe assembly.

[0007] According to the above solution, the first end of the bent-shaped bracket is provided with a temperature-sensing tube welding end for horizontally installing the temperature-sensing probe assembly. On both sides of the temperature-sensing tube welding end, there are first mounting wings for installing on the electrical structure. The second end of the bent-shaped bracket is provided with a screw hole for vertically installing the temperature adjustment assembly, a grounding end for connecting the ground wire, a second mounting wing for installing on the electrical structure, and a rivet hole for assembling the rivet.

[0008] According to the above solution, the temperature-sensing probe assembly includes a temperature-sensing tube, an alloy core rod, a driving spring piece, and a porcelain top. The temperature-sensing tube is made of stainless steel with a relatively high coefficient of thermal expansion. The alloy core rod is made of iron-nickel alloy with a relatively low coefficient of thermal expansion. The first end of the alloy core rod is welded and fixed to the pointed end of the first end of the temperature-sensing tube. The second end of the alloy core rod is welded and connected to the middle part of the driving spring piece. The first end of the driving spring piece is welded and fixed to the inner wall of the second end of the temperature-sensing tube. The second end of the driving spring piece is provided with a bent-shaped end head. There is an included angle γ between the bent-shaped end head and the middle part of the driving spring piece, and the angle range of γ is 135° to 175°. The porcelain top is fixed on the bent-shaped end head.

[0009] According to the above solution, the reed assembly includes an upper reed, a lower reed, and a moving contact. The second end of the upper reed is installed between the first porcelain ring and the second porcelain ring, and the second end of the upper reed is provided with a first wiring terminal for connecting a wire. The first end of the upper reed and the first end of the lower reed are connected and fixed by welding. The middle part of the lower reed is provided with a spring piece. The middle part of the upper reed is provided with a spring piece support position and a fulcrum. The spring piece is in corresponding contact with the spring piece support position. The fulcrum is in corresponding contact with the porcelain column of the temperature adjustment assembly. The first end of the reed assembly is provided with an end elbow that is in corresponding contact or separation with the porcelain top of the temperature-sensing probe assembly. There is an included angle δ between the end elbow and the plane of the first end of the connected reed assembly, and the angle range of δ is 130° to 175°. The second end of the lower reed is riveted or welded with a moving contact.

[0010] According to the above solution, the fixed contact piece assembly includes a fixed contact piece and a fixed contact head. The second end of the fixed contact piece is installed between the second porcelain ring and the third porcelain ring, and the second end of the fixed contact piece is provided with a second wiring terminal for connecting a wire. The fixed contact head is riveted or welded to the first end of the fixed contact piece.

[0011] According to the above solution, the second end of the bent bracket is provided with a first limiting block for limiting the rotation angle of the temperature adjustment assembly, and a second limiting block is provided on the temperature adjustment assembly. The first limiting block and the second limiting block are correspondingly limited.

[0012] According to the above solution, the temperature adjustment assembly includes an adjustment shaft, a limiting plate, an adjustment screw and a porcelain column. The adjustment shaft is installed in the screw hole at the second end of the bent bracket. The adjustment screw is installed in the adjustment shaft, and is fixed to the adjustment shaft by dotting paint to prevent loosening. The second end of the porcelain column is positioned by contacting the adjustment screw installed inside the adjustment shaft. The first end of the porcelain column correspondingly contacts the fulcrum on the middle part of the upper spring piece. The limiting plate is assembled on the adjustment shaft, and the second limiting block is provided on the limiting plate.

[0013] According to the above solution, the bent bracket can be integrally formed or can be formed by welding multiple parts together.

[0014] According to the above solution, the end elbow can be integrally formed with the spring piece assembly or can be welded to the spring piece assembly with a separately made elbow part.

[0015] According to the above solution, the bent bracket and the temperature sensing probe assembly are also applicable to the probe type thermostat with the contact action type of slow movement.

[0016] Advantages of the present invention:

[0017] With such a structural arrangement in the present invention, the traditional bracket is set as a bent bracket, so that an included angle α is formed between the temperature sensing probe assembly and the temperature adjustment assembly. The angle range of α is -5° to 85°. It can meet the requirements of various installation angles and positions of the probe type thermostat in the electrical appliance. Its structure is simple, the manufacturing cost is low, the practicability is strong, it is easy to install, and the application range is wider. It effectively solves the problem that for the probe type thermostat with the traditional structure, because the temperature adjustment assembly and the temperature sensing probe assembly are at a right angle, when it is necessary to set the temperature adjustment assembly and the temperature sensing probe assembly at a parallel angle or other angular positions, it is necessary to add other transmission mechanism parts such as gears or grooved pulleys or universal joints and flexible shafts to change the direction, resulting in an increase in the number of parts of the electrical appliance, a complex structure, a large occupied space, a high production difficulty, an increase in cost, an increase in use failures, and a great limitation in the application range. Description of the drawings

[0018] Unless otherwise specified, the description and drawings of the present invention take the contact action as the flashing type as an example. The Figures 2 to 1All use the probe - type thermostat with a flashing contact operation type as an example. Figure 1 It can be used as the common external view of the present invention (with flashing and slow - moving contact operation types). Figure 11 It is only used as an example of the probe - type thermostat of the present invention with a slow - moving contact operation type.

[0019] Figure 1 It is a three - dimensional view of the overall structure of the present invention;

[0020] Figure 2 It is the front view of the overall structure of the present invention Figure 1 ;

[0021] Figure 3 It is a schematic diagram of the included angle between the temperature - sensing probe assembly and the temperature - regulating assembly of the present invention;

[0022] Figure 4 It is an exploded view of the overall structure of the present invention;

[0023] Figure 5 It is the front view of the overall structure of the present invention Figure 2 ;

[0024] Figure 6 It is an assembly drawing of the elbow part and the reed assembly of the present invention;

[0025] Figure 7 is a comparison of the application of the present invention and the traditional probe - type thermostat Figure 1 .

[0026] Figure 8 is a comparison of the application of the present invention and the traditional probe - type thermostat Figure 2 ;

[0027] Figure 9 is a comparison of the application of the present invention and the traditional probe - type thermostat Figure 3 ;

[0028] Figure 10 is a comparison of the application of the present invention and the traditional probe - type thermostat Figure 4 ;

[0029] Figure 11 It is an example of the present invention applied to the probe - type thermostat with a slow - moving contact operation type.

[0030] 1. Bent bracket; 111. Welding end of temperature sensing tube; 112. First mounting wing; 121. Screw hole; 122. Rivet hole; 123. Grounding end; 124. First limiting block; 125. Second mounting wing; 2. Temperature sensing probe assembly; 21. Temperature sensing tube; 22. Alloy core rod; 23. Driving spring piece; 231. Bent end; 24. Porcelain top; 3. Temperature adjustment assembly; 31. Adjusting shaft; 32. Limiting plate; 321. Second limiting block; 33. Adjusting screw; 34. Porcelain column; 4. Reed assembly; 41. Upper reed; 411. First wiring terminal; 412. Spring piece support position; 413. Fulcrum; 42. Lower reed; 421. End elbow; 422. Spring piece; 43. Moving contact; 44. Elbow part; 5. Fixed contact piece assembly; 51. Fixed contact piece; 511. Second wiring terminal; 52. Fixed contact; 6. Rivet; 71. First porcelain ring; 72. Second porcelain ring; 73. Third porcelain ring. Detailed implementation mode

[0031] The technical solution of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0032] As Figures 1 to 4 shown, a novel probe type thermostat of the present invention includes a bent bracket 1, a temperature sensing probe assembly 2, a temperature adjustment assembly 3, a reed assembly 4, a fixed contact piece assembly 5, a rivet 6, a first porcelain ring 71, a second porcelain ring 72 and a third porcelain ring 3. The temperature sensing probe assembly 2 is horizontally installed at the first end of the bent bracket 1, and the temperature adjustment assembly 3 is vertically installed in the middle of the second end of the bent bracket 1. There is an included angle α between the temperature sensing probe assembly 2 and the temperature adjustment assembly 3, and the angle range of α is -5° to 85°. There is an included angle β between the first end and the second end of the bent bracket 1, and β = 90° + α. The reed assembly 4 and the fixed contact piece assembly 5 are isolated by the first porcelain ring 71, the second porcelain ring 72 and the third porcelain ring 3 and then installed on the second end of the bent bracket 1 through the rivet 6. The moving contact 43 of the reed assembly 4 and the fixed contact 52 of the fixed contact piece assembly 5 are in corresponding contact or separation. The middle part of the reed assembly 4 is in corresponding contact with the temperature adjustment assembly 3. The action temperature of the reed assembly 4 can be set or adjusted through the temperature adjustment assembly 3. The end elbow 421 of the reed assembly 4 is in corresponding contact or separation with the porcelain top 24 of the temperature sensing probe assembly 2. The above constitutes the basic structure of the present invention.

[0033] The present invention adopts such a structural arrangement. During operation, when the electrical appliance is powered on and heated to increase the temperature, the porcelain top 24 of the temperature-sensing probe assembly 2 is gradually displaced upward, driving the end elbow 421 of the reed assembly 4 to displace until the lower reed 42 operates, realizing the switching of the moving contact 43 of the reed assembly 4 and the fixed contact 52 of the fixed contact piece assembly 5 from contact to separation, disconnecting the circuit, stopping the heating of the electrical appliance, the temperature drops, the porcelain top 24 of the probe assembly 2 gradually resets downward, driving the end elbow 421 of the reed assembly 4 to reset until the lower reed 42 operates and resets, and the moving contact 43 of the lower reed 42 and the fixed contact 52 of the fixed contact piece assembly 5 resume the contact state, connecting the circuit, and the electrical appliance is powered on and heated again, thereby achieving the purpose of automatically controlling the temperature of the electrical appliance. It should be noted that the present invention sets the traditional bracket as a bent bracket 1, so that an included angle α is formed between the temperature-sensing probe assembly 2 and the temperature adjustment assembly 3, and the angle range of α is -5° to 85°, which can meet the installation requirements of various installation angles and positions of the probe-type temperature controller in the electrical appliance. Its structure is simple, the manufacturing cost is low, the practicability is strong, and it is easy to install, effectively solving the problem that the probe-type temperature controller with the traditional structure has a vertical angle between its temperature adjustment assembly and the temperature-sensing probe assembly. When it is necessary to set the temperature adjustment assembly and the temperature-sensing probe assembly at a parallel angle or other angular positions, it is necessary to add other transmission mechanism parts such as gears or grooved wheels or universal joints and flexible shafts to change the direction, resulting in an increase in the parts of the electrical appliance, a complex structure, a large occupied space, a high production difficulty, an increase in cost, an increase in usage failures, and a limited application range.

[0034] In practical applications, when the included angle between the first end and the second end of the bent bracket 1 is a right angle, as Figure 1 , Figure 5 and Figure 6 shown, at this time β = 90°, α = 0°, that is, the temperature-sensing probe assembly 2 and the temperature adjustment assembly 3 are in a parallel state.

[0035] In this embodiment, the first end of the bent bracket 1 is provided with a temperature-sensing tube welding end 111 for horizontally installing with the temperature-sensing probe assembly 2. On both sides of the temperature-sensing tube welding end 111, there are installation wings one 112 for installing on the electrical appliance structure. The second end of the bent bracket 1 is provided with a screw hole 121 for vertically installing with the temperature adjustment assembly 3, a grounding end 123 for connecting the ground wire, an installation wing two 125 for installing on the electrical appliance structure, and a rivet hole 122 for assembling the rivet 6. Adopting such a structural arrangement, the bent bracket 1 can be conveniently installed on the electrical appliance structure through the installation wing one 112 and the installation wing two 125. Among them, the screw hole 121 can facilitate the installation of the temperature adjustment assembly 3 and the operation and control of the electrical appliance through the adjustment shaft 31. The grounding end 123 can facilitate the connection of the ground wire, and the rivet hole 122 can facilitate the installation of the rivet 6.

[0036] In practical applications, the shapes, positions, and quantities of the installation wing 112 and the installation wing 125 can be set and varied according to actual situations.

[0037] In this embodiment, the temperature sensing probe assembly 2 includes a temperature sensing tube 21, an alloy core rod 22, a driving spring piece 23, and a porcelain top 24. The temperature sensing tube 21 is made of stainless steel with a relatively high coefficient of thermal expansion. The alloy core rod 22 is made of an iron-nickel alloy with a relatively low coefficient of thermal expansion. The first end of the alloy core rod 22 is fixedly welded to the pointed end of the first end of the temperature sensing tube 21. The second end of the alloy core rod 22 is welded and connected to the middle of the driving spring piece 23. The first end of the driving spring piece 23 is fixedly welded to the inner wall of the second end of the temperature sensing tube 21. The second end of the driving spring piece 23 is provided with a bent end 231. There is an angle γ between the bent end 231 and the middle of the driving spring piece 23, and the angle range of γ is 135° to 175°. The porcelain top 24 is fixed on the bent end 231. With such a structural arrangement, in the initial state, the porcelain top 24 is in corresponding contact or separation with the end elbow 421 of the reed assembly 4. At this time, the moving contact 43 of the reed assembly 4 and the fixed contact 52 of the fixed contact piece assembly 5 are in corresponding contact, and the circuit is in a conducting state. When the electrical appliance is powered on and heated to increase the temperature, the temperature sensing tube 21 with a relatively high coefficient of thermal expansion expands due to heat. Its length will increase more relative to the alloy core rod 22 with a very low coefficient of thermal expansion. The first end of the alloy core rod 22 is connected to the pointed end of the first end of the temperature sensing tube 21, and the first end of the driving spring piece 23 is fixedly connected to the second end of the temperature sensing tube 21. The middle of the driving spring 23 is connected to the second end of the alloy core rod 21. Therefore, the structure of the temperature sensing probe assembly 2 has the characteristics of a bimetallic component. After being heated, it will pull the connected driving spring piece 23 towards the first end from the first end of the temperature sensing tube 21 through the second end of the alloy core rod 22. Since the first end of the driving spring piece 23 is restricted by the second end of the temperature sensing tube 21, the driving spring piece 23 can only elastically deform locally and bend upwards along with the second end of the temperature sensing tube 21. Then, it drives the bent end 231 of the second end of the driving spring piece 23 and the porcelain top 24 thereon to lift upwards at the same time. The end elbow 421 of the reed assembly 4 is affected by the normal force N of the porcelain top 24, driving the first end of the reed assembly 4 to generate displacement until the lower reed 42 connected with the moving contact 43 acts, and its moving contact 43 and the fixed contact 52 of the fixed contact piece assembly 5 are separated correspondingly to cut off the circuit, and the electrical appliance stops heating. After power-off, the expanded length of the temperature sensing tube 21 gradually decreases as the temperature drops. The reed assembly 4 moves in the opposite direction along with the porcelain top 24 on the driving spring piece 23 until the lower reed 42 acts to reset, and the moving contact 43 and the fixed contact 52 come into contact again, and the circuit is re-conducted, realizing the function of automatic temperature control.

[0038] In practical applications, the temperature sensing tube 21 is made of 304 stainless steel or 0Cr18Ni9 with a relatively high coefficient of thermal expansion. To save costs, 301 stainless steel can also be used. The alloy core rod 22 is made of nickel alloy 4J36 with a very low coefficient of thermal expansion.

[0039] In this embodiment, the reed assembly 4 includes an upper reed 41, a lower reed 42 and a moving contact 43. The second end of the upper reed 41 is installed between the first porcelain ring 71 and the second porcelain ring 72, and the second end of the upper reed 41 is provided with a first terminal 411 for connecting a wire. The first end of the upper reed 41 and the first end of the lower reed 42 are connected and fixed by welding. A spring piece 422 is provided in the middle of the lower reed 42, and a spring piece support position 412 and a fulcrum 413 are provided in the middle of the upper reed 41. The spring piece 422 is in corresponding contact with the spring piece support position 412, and the fulcrum 413 is in corresponding contact with the porcelain post 34 of the temperature adjustment assembly 3. The first end of the reed assembly 4 is provided with an end elbow 421 that corresponds to contact or separate from the porcelain top 24 of the temperature sensing probe assembly 2. The second end of the lower reed 42 is riveted with a moving contact 43. With such a structural arrangement, when the main plane of the lower reed 42 is displaced from one side beyond the balance point of the spring piece support position 412 in the middle of the upper reed 41, under the tension of the spring piece 422 in the middle of the lower reed 42, the second end of the lower reed 42 together with the moving contact 43 moves quickly, switching the original contact or separation state between the moving contact 43 and the fixed contact 52, so as to achieve the purpose of switching the on-off state of the circuit.

[0040] In this embodiment, the fixed contact piece assembly 5 includes a fixed contact piece 51 and a fixed contact 52. The second end of the fixed contact piece 51 is installed between the second porcelain ring 72 and the third porcelain ring 73, and the second end of the fixed contact piece 51 is provided with a second terminal 511 for connecting a wire. The fixed contact 52 is riveted to the first end of the fixed contact piece 51.

[0041] In this embodiment, the second end of the bent bracket 1 is provided with a first limiting block 124 for limiting the rotation angle of the temperature adjustment assembly 3. A second limiting block 321 is provided on the temperature adjustment assembly 3. The first limiting block 124 and the second limiting block 321 are correspondingly limited. With such a structural arrangement, the rotation angle range of the temperature adjustment assembly is limited by the cooperation of the second limiting block 321 and the first limiting block 124.

[0042] In this embodiment, the temperature adjustment assembly 3 includes an adjustment shaft 31, a limit plate 32, an adjustment screw 33 and a porcelain column 34. The adjustment shaft 31 is installed in a screw hole 121 at the second end of the bent bracket 1. The adjustment screw 33 is installed in the adjustment shaft 31, and after setting the operating temperature of the thermostat during manufacturing, paint is applied to prevent loosening. The second end of the porcelain column 34 is positioned by contact with the adjustment screw 33 fixed inside the adjustment shaft 31. The first end of the porcelain column 34 correspondingly contacts the fulcrum 413 on the middle part of the upper reed 41 of the reed assembly 4. The limit plate 32 is assembled on the adjustment shaft 31, and a second limit block 321 is provided on the limit plate 32. With such a structural arrangement, when using the electrical appliance, by rotating the adjustment shaft 31, the adjustment screw 33 drives the displacement of the porcelain column 34, and the position of the elastic sheet support position 412 is adjusted through the fulcrum 413 to select the corresponding temperature gear; at the same time, the rotation angle range of the adjustment shaft 31 is restricted by the cooperation of the second limit block 321 and the first limit block 124, corresponding to the positions of the lowest gear (or stop gear) and the highest temperature gear of the thermostat.

[0043] Preferably, the bent bracket 1 can be integrally formed or can be divided into multiple parts and welded together.

[0044] Preferably, the end elbow 421 can be integrally formed with the reed assembly 4 or can be welded to the reed assembly 4 with a separately made elbow part 44.

[0045] Working principle of the present invention: When the electrical appliance is powered on and heated, the moving contact 42 and the fixed contact 51 are in the connected state. As the temperature of the electrical appliance continuously rises, the temperature-sensitive tube 21 with a relatively high coefficient of thermal expansion expands when heated, and its length increases more relative to the alloy core rod 22 with a very low coefficient of thermal expansion. The first end of the alloy core rod 22 is connected to the pointed end of the first end of the temperature-sensitive tube 21, and the first end of the driving spring piece 23 is fixedly connected to the second end of the temperature-sensitive tube 21. The middle part of the driving spring piece 23 is connected to the second end of the alloy core rod 21. Therefore, the structure of the temperature-sensitive probe assembly has the characteristics of a bimetallic member. After being heated, the first end of the temperature-sensitive tube 21 will pull the connected driving spring piece 23 towards the first end through the second end of the alloy core rod 22. Since the first end of the driving spring piece 23 is restricted by the second end of the temperature-sensitive tube 21, the driving spring piece can only undergo local elastic deformation and bend upwards together with the second end of the temperature-sensitive tube, while lifting the bent end 231 of the second end of the driving spring piece 23 and the porcelain top 24 thereon at the same time. The end elbow 421 of the spring piece assembly 4 is affected by the normal force N of the porcelain top 24, driving the first end of the spring piece assembly to generate displacement until the lower spring piece 42 fixed with the moving contact 43 acts, and the moving contact 43 and the fixed contact 52 of the fixed contact piece assembly 5 are correspondingly separated to cut off the circuit, and the electrical appliance stops heating; after power-off, the expanded length of the temperature-sensitive tube 21 gradually decreases as the temperature drops, and the spring piece assembly 4 moves in the reverse direction together with the porcelain top 24 on the driving spring piece 23 until the lower spring piece 42 acts to reset, bringing the moving contact 43 and the fixed contact 52 of the fixed contact piece assembly 5 into contact again, and the circuit is re-conducted, realizing the function of automatic temperature control.

[0046] As shown in FIGS. 7 to 10 are the application comparison diagrams of the present invention and the traditional probe-type temperature controller:

[0047] As shown in FIG. 7, 7(a) is the application of the traditional probe-type temperature controller Figure 1 , which requires a commutation mechanism, has many parts, a complex mechanism, high manufacturing and installation and debugging costs, and is easy to damage; 7(b) is the application of the present invention Figure 1 , without a commutation mechanism; it has a simple structure, low manufacturing cost, strong practicability, and is easy to install;

[0048] As shown in FIG. 8, 8(a) is the application of the traditional probe-type temperature controller Figure 2 , which requires a commutation mechanism, has many parts, a complex mechanism, high manufacturing and installation and debugging costs, and is easy to damage, and the distance between the live parts of the temperature controller and the pot body is short, with poor safety and inconvenient installation; 8(b) is the application of the present invention Figure 2 , without a commutation mechanism, and the live parts of the temperature controller are far from the pot body, with better safety; it has a simple structure, low manufacturing cost, strong practicability, and is easy to install.

[0049] As shown in FIG. 9, 9(a) is the application of the traditional probe-type temperature controller Figure 3, its temperature controller adjustment temperature axis is perpendicular to the temperature sensing probe assembly 2, that is, 90°, and the industrial design has great limitations; 9(b) is the application of the present invention Figure 3 , the included angle between the temperature controller adjustment temperature axis and the temperature sensing probe assembly 2 is α, and the angle range of α can be designed with a bent bracket 1 according to actual needs, so that α is -5° to 85°, which can fully meet the requirements of industrial design and manufacturing feasibility. Its structure is simple, the manufacturing cost is low, the practicability is strong, it is easy to install, and the application is flexible.

[0050] As shown in Figure 10, 10(a) is the application of a traditional probe-type temperature controller Figure 4 , when applying a traditional probe-type temperature controller to a power cord connector, when the axis of the temperature adjustment knob needs to be parallel to the axis of the temperature sensing probe, a commutation mechanism is required. There are many parts, the mechanism is complex, the manufacturing and installation and debugging costs are high, and it is easy to be damaged; 10(b) and 10(c) are the applications of the present invention Figure 4 , no commutation mechanism is required, and the α angle can be designed according to needs. Its structure is simple, the manufacturing cost is low, the practicability is strong, it is easy to install, and the application is flexible.

[0051] Such as Figure 11 shown, is an example of the application of the present invention to a probe-type temperature controller with a slow-acting contact action type. Its characteristics are also that its structure is simple, the manufacturing cost is low, the practicability is strong, and it is easy to install.

[0052] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention. These all belong to the protection scope of the present invention.

Claims

1. A probe-type thermostat, characterized in that: It includes a bent bracket (1), a temperature-sensing probe assembly (2), a temperature adjustment assembly (3), a reed assembly (4), a fixed contact assembly (5), rivets (6), a first porcelain ring (71), a second porcelain ring (72), and a third porcelain ring (3). The temperature-sensing probe assembly (2) is horizontally installed at the first end of the bent bracket (1). The temperature adjustment assembly (3) is vertically installed in the middle of the second end of the bent bracket (1). There is an included angle α between the temperature-sensing probe assembly (2) and the temperature adjustment assembly (3), and the angle range of α is -5° to 85°. There is an included angle β between the first end and the second end of the bent bracket (1), and β = 90° + α. The reed assembly (4) and the fixed contact assembly (5) are installed at the second end of the bent bracket (1) through rivets (6) after being isolated by the first porcelain ring (71), the second porcelain ring (72), and the third porcelain ring (3). The moving contact (43) of the reed assembly (4) and the fixed contact (52) of the fixed contact assembly (5) are in corresponding contact or separation. The middle part of the reed assembly (4) is in corresponding contact with the temperature adjustment assembly (3). The operating temperature of the reed assembly (4) can be set or adjusted through the temperature adjustment assembly (3). The end elbow (421) of the reed assembly (4) is in corresponding contact or separation with the porcelain top (24) of the temperature-sensing probe assembly (2); The temperature-sensing probe assembly (2) includes a temperature-sensing tube (21), an alloy core rod (22), a driving spring piece (23), and a porcelain top (24). The temperature-sensing tube (21) is made of stainless steel with a relatively high coefficient of thermal expansion. The alloy core rod (22) is made of iron-nickel alloy with a relatively low coefficient of thermal expansion. The first end of the alloy core rod (22) is welded and fixed to the pointed end of the first end of the temperature-sensing tube (21). The second end of the alloy core rod (22) is welded and connected to the middle part of the driving spring piece (23). The first end of the driving spring piece (23) is welded and fixed to the inner wall of the second end of the temperature-sensing tube (21). The second end of the driving spring piece (23) is provided with a bent end (231). There is an included angle γ between the bent end (231) and the middle part of the driving spring piece (23), and the angle range of γ is 135° to 175°. The porcelain top (24) is fixed on the bent end (231); The reed assembly (4) includes an upper reed (41), a lower reed (42) and a moving contact (43). The second end of the upper reed (41) is installed between the first porcelain ring (71) and the second porcelain ring (72), and a first terminal (411) for connecting a wire is provided at the second end of the upper reed (41). The first end of the upper reed (41) and the first end of the lower reed (42) are fixedly connected by welding. A spring piece (422) is provided in the middle of the lower reed (42), and a spring piece support position (412) and a fulcrum (413) are provided in the middle of the upper reed (41). The spring piece (422) is in corresponding contact with the spring piece support position (412), and the fulcrum (413) is in corresponding contact with the porcelain post (34) of the temperature adjustment assembly (3). The first end of the reed assembly (4) is provided with an end elbow (421) that correspondingly contacts or separates from the porcelain top (24) of the temperature sensing probe assembly (2). There is an included angle δ between the end elbow (421) and the plane of the first end of the connected reed assembly (4), and the angle range of δ is 130° to 175°. The second end of the lower reed (42) is riveted or welded with a moving contact (43).

2. The probe-type temperature controller according to claim 1, characterized in that: The first end of the bent bracket (1) is provided with a temperature sensing tube welding end (111) for horizontally installing with the temperature sensing probe assembly (2). Installation wings one (112) for installing on the electrical structure are provided on both sides of the temperature sensing tube welding end (111). The second end of the bent bracket (1) is provided with a screw hole (121) for vertically installing with the temperature adjustment assembly (3), a grounding end (123) for connecting the ground wire, installation wings two (125) for installing on the electrical structure, and a rivet hole (122) for assembling a rivet (6).

3. The probe-type temperature controller according to claim 1, characterized in that: The fixed contact piece assembly (5) includes a fixed contact piece (51) and a fixed contact (52). The second end of the fixed contact piece (51) is installed between the second porcelain ring (72) and the third porcelain ring (73), and a second terminal (511) for connecting a wire is provided at the second end of the fixed contact piece (51). The fixed contact (52) is riveted or welded to the first end of the fixed contact piece (51).

4. The probe-type temperature controller according to claim 1, characterized in that: The second end of the bent bracket (1) is provided with a first limiting block (124) for limiting the rotation angle of the temperature adjustment assembly (3). A second limiting block (321) is provided on the temperature adjustment assembly (3), and the first limiting block (124) and the second limiting block (321) are correspondingly limited.

5. The probe-type temperature controller according to claim 4, characterized in that: The temperature adjustment component (3) includes an adjustment shaft (31), a limit plate (32), an adjustment screw (33) and a porcelain column (34). The adjustment shaft (31) is installed in a threaded hole (121) at the second end of the bent bracket (1). The adjustment screw (33) is installed in the adjustment shaft (31), and is fixed to the adjustment shaft (31) as a whole by dotting paint to prevent loosening. The second end of the porcelain column (34) is positioned by contacting the adjustment screw (33) installed inside the adjustment shaft (31). The first end of the porcelain column (34) correspondingly contacts the fulcrum (413) on the middle part of the upper reed (41). The limit plate (32) is assembled on the adjustment shaft (31), and a second limit block (321) is provided on the limit plate (32).

6. A probe-type temperature controller according to claim 2, wherein: The bent bracket (1) is integrally formed or divided into multiple parts and welded together.

7. A probe-type temperature controller according to claim 1, wherein: The end elbow (421) and the reed assembly (4) are integrally formed, or a separately made elbow part (44) is welded to the reed assembly (4).

8. A probe-type temperature controller according to any one of claims 1 or 2, wherein: The bent bracket (1) and the temperature sensing probe assembly (2) are also applicable to a probe-type temperature controller with a slow-acting contact action type.

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