Liquid expansion temperature controller with specific protective shell structure

Abstract

The utility model discloses a liquid expansion temperature controller with a specific protective shell structure. The liquid expansion temperature controller comprises a mounting column, a protective shell assembly, and a top plate, a first elastic sheet, a second elastic sheet and a fixed plate which are sequentially arranged on the mounting column and are separated by a ceramic ring, the first elastic sheet is connected with a first terminal, and the second elastic sheet is connected with a second terminal; the fixed plate is provided with a diaphragm capsule which is connected with a temperature sensing cylinder through a capillary tube; the protective shell assembly comprises a first shell cover and a second shell cover which are detachably spliced; the protective shell assembly sleeves the outer sides of the mounting column, the top plate and the fixed plate; the first terminal, the second terminal, the adjusting column and the capillary tube can extend out of the protective shell assembly. According to the utility model, when an operator carries out production, the first housing and the second housing can be spliced with each other to wrap the temperature controller, thereby effectively protecting main temperature sudden change elements such as a diaphragm capsule and a reed, avoiding collision when the operator assembles the temperature controller on a product, reducing the number of times of checking and debugging, and maintaining the temperature control precision.

Description

Technical Field

[0001] This utility model relates to the field of temperature controller technology, and in particular to a liquid expansion temperature controller with a specific protective shell structure. Background Technology

[0002] The working principle of a liquid expansion thermostat: It utilizes the principle of thermal expansion and contraction. A liquid working fluid is filled into a power component that forms a sealed space, consisting of a diaphragm, capillary tube, temperature sensing cylinder, or temperature sensing bulb. Taking advantage of the physical property of liquid thermal expansion and contraction, when the temperature sensing cylinder or bulb senses a change in external temperature, the change in the volume of the internal working fluid translates into a change in pressure or volume within the sealed space, causing the diaphragm to shift. When the set value is reached, a mechanism consisting of a diaphragm handle, diaphragm seat plate, and push rod actuates a rapid, instantaneous switch composed of elastic elements, causing an on / off action. The switch opens when the temperature rises and closes when the temperature falls, thus achieving temperature control.

[0003] For example, the liquid expansion temperature controller disclosed in patent number CN201820043270.4. However, in order to provide relatively rapid and large displacement changes, the area of ​​the diaphragm or temperature sensing bulb is relatively large compared to other components, and its outer edge protrudes beyond the base. During assembly and use, the diaphragm is easily bumped and deformed or damaged, resulting in deviations in temperature setting and reduced temperature control accuracy. Furthermore, the base plates or frames of this temperature controller are cantilevered on one side of the base column formed by several ceramic rings. After long-term use, there is a risk of deformation and displacement of the cantilever ends, which may also lead to reduced temperature control accuracy. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a liquid expansion temperature controller with a specific protective shell structure.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a liquid expansion temperature controller with a specific protective shell structure, including a mounting column, a protective shell assembly, and a top plate, a first spring, a second spring, and a fixing plate sequentially arranged on the mounting column and separated by a ceramic ring;

[0006] The first spring is connected to a first terminal, and the second spring is connected to a second terminal; a spring assembly is provided between the first spring and the second spring; the top plate is provided with an adjusting post, which can abut against and deform the spring assembly so that the first spring and the second spring are in an electrically connected or disconnected state;

[0007] The fixed plate is provided with a diaphragm box, which is connected to the temperature sensing cylinder through a capillary tube; the diaphragm box and the capillary tube are provided with a sealed cavity filled with a liquid medium; a ceramic column is provided on the diaphragm box, which can abut against the spring assembly; when the temperature of the environment where the temperature sensing cylinder is located changes, the liquid medium can deform the diaphragm box and change the deformation state of the spring assembly through the ceramic column, thereby changing the electrical connection state between the first spring and the second spring.

[0008] The protective shell assembly includes a detachable and splicable first shell cover and a second shell cover; the protective shell assembly is sleeved on the outside of the mounting post, top plate and fixing plate; the first terminal, the second terminal, the adjusting post and the capillary tube can extend out of the protective shell assembly.

[0009] Optionally, a support column is also provided between the top plate and the fixed plate, the support column being located at the end of the top plate and the fixed plate away from the mounting column; the spring assembly and the diaphragm box are disposed between the mounting column and the support column.

[0010] Optionally, the first and second shells are configured as a box-like structure with an opening on one side, and the opening side of the first and second shells is provided with a mutually compatible buckle and locking groove structure; the buckle can be fastened to the locking groove so that the first and second shells are spliced ​​and locked together.

[0011] Optionally, the top plate may abut against the top of the first shell and the second shell; the inner side of the first shell or the second shell is provided with supporting ribs, and the fixing plate may abut against the supporting ribs.

[0012] Optionally, the fixing plate is provided with a downward-facing flange structure, which can abut against the supporting rib.

[0013] Optionally, the first or second housing may have a clearance groove; the first and second terminals may extend out of the protective housing assembly through the clearance groove.

[0014] Optionally, a positioning protrusion is provided above the membrane box; the ceramic column has a sleeve structure and can be sleeved on the positioning protrusion from above.

[0015] Optionally, the protective shell assembly is provided with a ventilation window.

[0016] Optionally, the protective shell assembly is provided with a top slot, and the top plate can be snapped into the top slot from one side.

[0017] Optionally, a limiting block is provided on the inner side of the first or second housing, and the fixing plate can be inserted into the limiting block.

[0018] The beneficial effects of this utility model are as follows: The protective shell assembly includes a detachable and splicable first shell and a second shell. During production, the operator can splice the first shell and the second shell together to wrap the main supporting and fixing components of the temperature controller, such as the mounting column, top plate, and fixing plate, and also wrap the spring assembly and diaphragm box inside. This effectively protects the diaphragm box and the spring, as well as other main components that experience sudden temperature changes. It also prevents the temperature controller from being bumped or knocked when it is assembled on the product, which could cause changes in the state of the diaphragm box or spring assembly. This maintains a stable preset temperature, reduces the number of times calibration and adjustment are required, and maintains temperature control accuracy.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of the liquid expansion temperature controller with a specific protective shell structure according to this utility model;

[0022] Figure 2 for Figure 1 An exploded structural diagram of the liquid expansion temperature controller with a specific protective shell structure;

[0023] Figure 3 for Figure 1 A cross-sectional view of the liquid expansion temperature controller with a specific protective shell structure;

[0024] Figure 4 An exploded view of a liquid-expanding temperature controller with a specific protective shell structure according to another embodiment;

[0025] Figure 5 for Figure 4 A cross-sectional view of the liquid expansion temperature controller with a specific protective shell structure.

[0026] Figure 6 This is an exploded view of a liquid expansion temperature controller with a specific protective shell structure in another embodiment;

[0027] Explanation of key component symbols:

[0028] 10. Mounting post; 11. Ceramic ring; 20. Protective shell assembly; 21. First shell cover; 211. Locking groove; 212. Clearance groove; 22. Second shell cover; 221. Inverted buckle; 222. Support rib; 223. Limiting block; 23. Ventilation window; 24. Top slot; 30. Top plate; 31. Adjusting post; 40. First spring; 41. First terminal; 50. Second spring; 42. Second terminal; 60. Spring assembly; 70. Fixing plate; 71. Flanged structure; 80. Diaphragm box; 81. Capillary tube; 82. Ceramic post; 83. Positioning protrusion; 90. Support post. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0030] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Example

[0034] Reference Figures 1 to 5The present invention proposes a liquid expansion temperature controller with a specific protective shell structure, including a mounting post 10, a protective shell assembly 20, and a top plate 30, a first spring 40, a second spring 50 and a fixing plate 70 sequentially arranged on the mounting post 10 and separated by a ceramic ring 11.

[0035] The first spring 40 is connected to the first terminal 41, and the second spring 50 is connected to the second terminal 42; a spring assembly 60 is provided between the first spring 40 and the second spring 50; the top plate 30 is provided with an adjusting column 31, which can abut against and deform the spring assembly 60 so that the first spring 40 and the second spring 50 are in an electrically connected or disconnected state.

[0036] The fixed plate 70 is provided with a diaphragm box 80, which is connected to the temperature sensing cylinder through a capillary tube 81. The diaphragm box 80 and the capillary tube 81 are provided with a sealed cavity filled with a liquid medium. A ceramic column 82 is provided on the diaphragm box 80, which can abut against the spring assembly 60. When the temperature of the environment where the temperature sensing cylinder is located changes, the liquid medium can deform the diaphragm box 80 and change the deformation state of the spring assembly 60 through the ceramic column 82, thereby changing the electrical connection state between the first spring 40 and the second spring 50.

[0037] The protective shell assembly 20 includes a detachable first shell cover 21 and a second shell cover 22; the protective shell assembly 20 is sleeved on the outside of the mounting post 10, the top plate 30 and the fixing plate 70; the first terminal 41, the second terminal 42, the adjusting post 31 and the capillary tube 81 can extend out of the protective shell assembly 20.

[0038] In this utility model, the protective shell assembly 20 includes a detachable and splicable first shell 21 and a second shell 22. During production, the operator can splice the first shell 21 and the second shell 22 together to wrap the main supporting and fixing elements such as the mounting column 10, top plate 30, and fixing plate 70 of the temperature controller, and wrap the spring assembly 60 and diaphragm box 80 inside. This effectively protects the diaphragm box 80 and the spring and other main temperature change change elements, and avoids the operator bumping the temperature controller when assembling it on the product, which may cause the state of the diaphragm box 80 or the spring assembly 60 to change. This maintains a stable preset temperature, reduces the number of times that need to be checked and adjusted, and maintains the temperature control accuracy.

[0039] In this embodiment, a support column 90 is also provided between the top plate 30 and the fixed plate 70, with the support column 90 located at the end of the top plate 30 and the fixed plate 70 away from the mounting column 10; the spring assembly 60 and the diaphragm box 80 are disposed between the mounting column 10 and the support column 90. The support column 90 and the mounting column 10 are fixed to the two ends of the top plate 30 and the fixed plate 70 respectively, changing the existing cantilevered thermostat to a two-sided support and fixation, making the overall strength of the top and the fixed plate 70 higher and less prone to deformation and displacement.

[0040] In this embodiment, the first housing 21 and the second housing 22 are configured as a box-like structure with an opening on one side. The opening side of the first housing 21 and the second housing 22 is provided with mutually compatible buckle 221 and locking groove 211 structures. The buckle 221 can be fastened to the locking groove 211, so that the first housing 21 and the second housing 22 are spliced ​​and locked together. By pressing the first housing 21 and the second housing 22 together with the buckle 221 and the locking groove 211, the buckle 221 and the locking groove 211 can be locked together, making assembly and disassembly convenient.

[0041] In this embodiment, the top plate 30 can abut against the top of the first housing 21 and the second housing 22; the inner side of the first housing 21 or the second housing 22 is provided with supporting ribs 222, and the fixing plate 70 can abut against the supporting ribs 222. Through the structure of the top of the housing and the supporting ribs 222, the top plate 30 and the fixing plate 70 are pressed tightly from the top and bottom sides respectively, thereby completing the assembly, locking and limiting of the first housing 21 and the second housing 22 with the thermostat body, making it less prone to shaking.

[0042] Furthermore, the fixing plate 70 is provided with a downward-facing flange structure 71, which can abut against the support rib 222. The flange structure 71 not only improves the strength of the fixing plate 70 itself, but also corresponds to the protruding support rib structure inside the protective shell assembly 20.

[0043] In this embodiment, in order to provide clearance space for the installation of the first terminal 41 and the second terminal 42, the first housing 21 or the second housing 22 is provided with clearance groove 212; the first terminal 41 and the second terminal 42 can extend out of the protective housing assembly 20 through the clearance groove 212.

[0044] In this embodiment, a positioning protrusion 83 is provided above the membrane box 80; the ceramic column 82 has a sleeve structure and can be sleeved on the positioning protrusion 83 from above. The ceramic column 82 has a sleeve structure, which can be easily sleeved and installed on the positioning protrusion 83 of the membrane box 80. The positioning protrusion 83 is located close to the sealed cavity of the membrane box 80, and can move sensitively and accurately with the expansion of the liquid medium, thereby driving the ceramic column 82 to move. The response is fast and sensitive, and the installation is convenient.

[0045] Please see Figure 4 and Figure 5 In some embodiments, the protective housing assembly 20 is provided with a ventilation window 23. This ventilation window 23 allows the gas inside the protective housing assembly 20 to circulate with the outside, and at the same time provides an observation window to observe the working status inside the liquid expansion temperature controller.

[0046] Furthermore, the protective housing assembly 20 is provided with a top slot 24, into which the top plate 30 can be snapped from one side. The top slot 24 can secure the top plate 30 from one side, thereby making the installation of the protective housing assembly 20 and the liquid expansion temperature controller body more secure.

[0047] In some embodiments, the protective housing assembly 20 may also be provided with a pressed or raised structure to improve the overall strength of the protective housing.

[0048] In some embodiments, the support column 90 may be omitted in order to reduce costs and facilitate the use of the protective shell assembly 20.

[0049] Please see Figure 6 In some embodiments, a limiting block 223 is provided on the inner side of the first housing 21 or the second housing 22, and the fixing plate 70 can be inserted into the limiting block 223. By clamping the fixing plate 70 on both sides, the limiting block 223 can effectively prevent the fixing plate 70 from deforming at high temperatures, thereby changing the accuracy of temperature control.

[0050] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A liquid expansion temperature controller with a specific protective shell structure, characterized in that, It includes a mounting post (10), a protective shell assembly (20), and a top plate (30), a first spring (40), a second spring (50), and a fixing plate (70) sequentially disposed on the mounting post (10) and separated by a ceramic ring (11); The first spring (40) is connected to a first terminal (41), and the second spring (50) is connected to a second terminal (42); a spring assembly (60) is provided between the first spring (40) and the second spring (50); the top plate (30) is provided with an adjusting post (31), which can abut against and deform the spring assembly (60) so that the first spring (40) and the second spring (50) are in an electrically connected or disconnected state; The fixing plate (70) is provided with a diaphragm box (80), which is connected to the temperature sensing cylinder through a capillary tube (81); the diaphragm box (80) and the capillary tube (81) are provided with a sealed cavity filled with a liquid medium; a ceramic column (82) is provided on the diaphragm box (80), which can abut against the spring assembly (60); when the temperature of the environment where the temperature sensing cylinder is located changes, the liquid medium can deform the diaphragm box (80) and change the deformation state of the spring assembly (60) through the ceramic column (82) to change the electrical connection state of the first spring (40) and the second spring (50); The protective shell assembly (20) includes a detachable first shell cover (21) and a second shell cover (22); the protective shell assembly (20) is sleeved on the outside of the mounting post (10), the top plate (30) and the fixing plate (70); the first terminal (41), the second terminal (42), the adjusting post (31) and the capillary tube (81) can extend out of the protective shell assembly (20).

2. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: A support column (90) is also provided between the top plate (30) and the fixing plate (70), and the support column (90) is located at the end of the top plate (30) and the fixing plate (70) away from the mounting column (10); the spring assembly (60) and the diaphragm box (80) are provided between the mounting column (10) and the support column (90).

3. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The first shell (21) and the second shell (22) are configured as a box structure with an opening on one side. The first shell (21) and the second shell (22) are provided with a mutually compatible buckle (221) and locking groove (211) structure on one side of the opening. The buckle (221) can be fastened to the locking groove (211) so that the first shell (21) and the second shell (22) are spliced ​​and locked.

4. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The top plate (30) can abut against the top of the first shell (21) and the second shell (22); the inner side of the first shell (21) or the second shell (22) is provided with a support rib (222), and the fixing plate (70) can abut against the support rib (222).

5. The liquid expansion temperature controller with a specific protective shell structure according to claim 4, characterized in that: The fixing plate (70) is provided with a downward-facing flange structure (71), which can abut against the supporting rib (222).

6. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The first housing (21) or the second housing (22) is provided with a clearance groove (212); the first terminal (41) and the second terminal (42) can extend out of the protective housing assembly (20) through the clearance groove (212).

7. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The membrane box (80) is provided with a positioning protrusion (83) on its upper part; the ceramic column (82) has a sleeve structure and can be sleeved on the positioning protrusion (83) from above.

8. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The protective shell assembly (20) is provided with a ventilation window (23).

9. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: The protective shell assembly (20) is provided with a top slot (24), and the top plate (30) can be snapped into the top slot (24) from one side.

10. The liquid expansion temperature controller with a specific protective shell structure according to claim 1, characterized in that: A limiting block (223) is provided on the inner side of the first shell (21) or the second shell (22), and the fixing plate (70) can be inserted into the limiting block (223).

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