CN211479941U

CN211479941U - Adjustable thermal expansion temperature controller

Info

Publication number: CN211479941U
Application number: CN202020346281.7U
Authority: CN
Inventors: 叶建兵
Original assignee: Foshan Shunde Huikong Electrical Appliance Manufacturing Co ltd
Current assignee: Foshan Shunde Huikong Electrical Appliance Manufacturing Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-09-11
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses an adjustable thermal expansion temperature controller, which comprises an installation shell, a temperature sensing cylinder and a switch component, wherein the switch component comprises a diaphragm capsule, a first spring leaf, a static contact and a moving contact, and one end of the first spring leaf is clamped in a ceramic ring component and is electrically connected with a first terminal piece; the other end of the first spring piece is formed into a driving piece; the moving contact is arranged on the driving sheet; one end of the static contact is clamped in the porcelain ring component and is electrically connected with the second terminal plate, and the other end of the static contact is formed into a contact end used for contacting with the moving contact; the diaphragm capsule is arranged on the mounting shell and is positioned above the first spring piece; the diaphragm capsule is connected with the temperature sensing cylinder through a capillary tube; the bottom end of the diaphragm capsule is provided with a push rod; the push rod is used for being close to the driving sheet when the diaphragm capsule deforms so as to push the driving sheet to enable the static contact to be in contact with the moving contact. The utility model discloses a thermal expansion temperature controller with adjustable, the push rod of its diaphragm capsule bottom can directly the first spring leaf of roof pressure down, makes static contact and moving contact, improvement sensitivity.

Description

Adjustable thermal expansion temperature controller

Technical Field

The utility model relates to a thermal expansion temperature controller technical field especially relates to a thermal expansion temperature controller with adjustable.

Background

At present, a thermal expansion temperature controller is an automatic control element, also called a temperature control switch, which generates a switching on or off action by physically deforming inside a switch according to a temperature change of a working environment. The method is mainly used for high-temperature control of various heaters and other devices. However, the conventional thermal expansion thermostat cannot be turned on or off quickly, so that the sensitivity is low, and the thermal expansion thermostat is prone to failure after being used for a long time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an adjustable thermal expansion temperature controller, the push rod of the bottom end of the diaphragm capsule can directly press the first spring piece downwards, so that the static contact and the moving contact are contacted, and the sensitivity is improved.

The purpose of the utility model is realized by adopting the following technical scheme:

an adjustable thermal expansion temperature controller comprises an installation shell, a temperature sensing cylinder and a switch assembly, wherein a ceramic ring assembly, a first terminal piece and a second terminal piece are arranged on the installation shell, one end of the first terminal piece is clamped on the ceramic ring assembly, and the other end of the first terminal piece is formed into a first wiring end; one end of the second terminal piece is clamped on the ceramic ring assembly, and the other end of the second terminal piece is formed into a second wiring end;

the switch assembly comprises a diaphragm capsule, a first spring piece, a fixed contact and a moving contact, wherein one end of the first spring piece is clamped in the ceramic ring assembly and is electrically connected with the first terminal piece; the other end of the first spring piece is formed into a driving piece; the moving contact is arranged on the driving sheet; one end of the static contact is clamped in the porcelain ring component and is electrically connected with the second terminal plate, and the other end of the static contact is formed into a contact end which is used for being in contact with the moving contact; the diaphragm capsule is arranged on the mounting shell and is positioned above the first spring piece; the diaphragm capsule is connected with the temperature sensing cylinder through a capillary tube; the bottom end of the diaphragm capsule is provided with a push rod; the push rod is used for being close to the driving sheet when the diaphragm capsule deforms so as to press the driving sheet to enable the static contact to be in contact with the moving contact.

Furthermore, the top end of the diaphragm capsule is provided with an adjusting rod which is arranged on the mounting shell and moves towards or away from the driving sheet;

furthermore, a threaded hole is formed in the top end of the mounting shell, and the top end of the adjusting rod is in threaded connection with the threaded hole.

Further, the ceramic ring assembly comprises a first ceramic ring, a second ceramic ring and a third ceramic ring, and the first ceramic ring, the second ceramic ring and the third ceramic ring are sequentially stacked and fixed through bolts; the first spring piece and the first terminal piece are clamped between the first ceramic ring and the second ceramic ring; and the static contact and the second terminal plate are clamped between the second ceramic ring and the third ceramic ring.

Furthermore, the switch assembly further comprises a second spring plate, a support plate and an installation rod, wherein one end of the support plate is fixedly connected to the ceramic ring assembly, the installation rod is fixed to the other end of the support plate, the first spring plate is fixed to the installation rod, one end of the second spring plate is fixed to the installation rod, and the static contact is fixed to the other end of the second spring plate.

Furthermore, an elastic sheet is arranged on the first spring sheet and used for forming the driving sheet, a bending part which is bent downwards is arranged at the end part of the elastic sheet, an arc sheet is arranged on the second spring sheet, the bending part is connected with one end of the arc sheet, and the static contact is arranged at the other end of the arc sheet.

Furthermore, the elastic sheet is provided with a positioning hole, and the push rod is used for positioning and matching with the positioning hole.

Compared with the prior art, the beneficial effects of the utility model reside in that: when the temperature control is carried out, the temperature sensing cylinder can sense the temperature change, the expansion of the temperature sensing medium is transferred to the diaphragm capsule through the capillary tube, the diaphragm capsule is deformed to drive the push rod to push against the moving contact, the moving contact and the fixed contact are switched on and off, and the temperature control is realized. The adjusting rod can move up and down to drive the diaphragm capsule to move up and down, the distance between the push rod and the driving sheet is adjusted, and the temperature is controlled according to actual needs, so that the sensitivity of the thermal expansion temperature controller is better.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the partially exploded structure of the present invention;

fig. 3 is a schematic structural diagram of the switch assembly of the present invention.

In the figure: 10. installing a shell; 20. a temperature sensing cylinder; 21. a first ceramic ring; 22. a second ceramic ring; 23. a third ceramic ring; 31. a first spring plate; 311. a bending section; 32. a bellows; 33. a push rod; 34. adjusting a rod; 35. a second spring plate; 351. arc sheets; 36. a support sheet; 37. mounting a rod; 40. a moving contact; 50. static contact; 60. a first terminal piece; 70. a second terminal piece; 80. a capillary tube.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, an adjustable thermal expansion temperature controller includes a mounting housing 10, a temperature sensing cylinder 20 and a switch assembly, wherein a ceramic ring assembly, a first terminal piece 60 and a second terminal piece 70 are disposed on the mounting housing 10, one end of the first terminal piece 60 is clamped to the ceramic ring assembly, and the other end of the first terminal piece 60 is formed as a first terminal; one end of the second terminal piece 70 is clamped to the porcelain ring assembly, and the other end of the second terminal piece 70 is formed as a second terminal.

Specifically, the switch assembly includes a bellows 32, a first spring plate 31, a fixed contact 50, and a movable contact 40, one end of the first spring plate 31 is clamped in the porcelain ring assembly, the first spring plate 31 is electrically connected to the first terminal plate 60, the other end of the first spring plate 31 is formed as a driving plate, and the movable contact 40 is mounted on the driving plate. In addition, one end of the static contact 50 is clamped in the porcelain ring assembly and electrically connected to the second terminal plate 70, and the other end of the static contact 50 is formed as a contact end, which can be in contact with the movable contact 40.

The bellows 32 is mounted on the mounting case 10 above the first spring plate 31, and the bellows 32 is connected to the temperature sensing cylinder 20 through a capillary tube 80. An adjusting rod 34 is arranged at the top end of the bellows 32, and the adjusting rod 34 is arranged on the mounting shell 10 and moves towards or away from the driving sheet; the bottom end of the capsule 32 is provided with a push rod 33; the push rod 33 is used to approach the driving plate when the bellows 32 is deformed, so as to press the driving plate to make the stationary contact 50 contact with the movable contact 40.

On the basis of the structure, use the utility model discloses a during thermal expansion temperature controller with adjustable, can insert the two poles of the earth of circuit respectively with first terminal piece 60, second terminal piece 70, under normal conditions, static contact 50 and moving contact 40 disconnection, and first terminal piece 60 and second terminal piece 70 separate through the porcelain ring subassembly. In operation, the temperature sensing cylinder 20 can sense temperature change, when the sensed temperature reaches a preset temperature, the expansion of the temperature sensing medium is transmitted to the diaphragm capsule 32 through the capillary tube 80, so that the diaphragm capsule 32 deforms to drive the push rod 33 to press downwards, the driving piece of the first spring piece 31 deforms to drive the movable contact 40 to move downwards, the movable contact 40 and the static contact 50 are switched on and off, temperature control is achieved, and when the temperature is recovered, the first spring piece 31 can reset.

According to different set temperatures, the distances between the push rods 33 moving downwards are different, the deformation quantity generated by the diaphragm box 32 is different, and in order to enable the thermal expansion temperature controller to have good sensitivity at different temperatures, the adjusting rods 34 can be adjusted to enable the adjusting rods 34 to move up and down to drive the diaphragm box 32 to move up and down, the distance between the push rods 33 and the driving sheet is adjusted, and the adjustment is carried out according to the actual temperature control condition, so that the sensitivity of the thermal expansion temperature controller is better.

Specifically, a threaded hole may be formed at the top end of the mounting housing 10, a thread may be formed at the top end of the adjustment rod 34, and the top end of the adjustment rod 34 may be screwed into the threaded hole, so that the adjustment rod 34 may be adjusted up and down by rotating the thread. Of course, the up and down movement of the adjustment lever 34 and the mounting housing 10 can also be achieved in a sliding manner.

Further, the ceramic ring assembly in this embodiment includes a first ceramic ring 21, a second ceramic ring 22, and a third ceramic ring 23, and the first ceramic ring 21, the second ceramic ring 22, and the third ceramic ring 23 are stacked in sequence and fixed by bolts, so that the first spring piece 31 and the first terminal piece 60 can be clamped between the first ceramic ring 21 and the second ceramic ring 22, and the fixed contact 50 and the second terminal piece 70 can be clamped between the second ceramic ring 22 and the third ceramic ring 23, specifically, the first ceramic ring 21 and the third ceramic ring 23 can be thick ceramic rings, and the second ceramic ring 22 can be thin ceramic rings, and ceramic rings with different thicknesses can be used as insulating materials, thereby improving safety.

Further, the switch assembly further includes a second spring plate 35, a support plate 36 and a mounting rod 37, one end of the support plate 36 is fixedly connected to the ceramic ring assembly, the mounting rod 37 is fixed to the other end of the support plate 36, specifically, the first spring plate 31 is fixed to the mounting rod, an elastic plate is arranged on the first spring plate 31 and used for forming a driving plate, one end of the second spring plate 35 is fixed to the mounting rod, and the static contact 50 is fixed to the other end of the second spring plate 35.

On the basis of the structure, after the temperature changes, the push rod 33 downwards pushes the elastic piece, the elastic piece can downwards push the second spring piece 35, and the control is more stable and the resetting is faster through two elastic forces. The first spring plate 31 and the second spring plate 35 are connected with the porcelain ring assembly through the mounting rod 37 by the support piece 36, so that when a force is applied to the upper parts of the first spring plate and the second spring plate, the support piece 36 positioned below the first spring plate and the second spring plate can be used as a bearing surface to play a supporting role.

More specifically, a bent portion 311 bent downward is disposed at an end of the elastic piece, an arc piece 351 is disposed on the second spring piece 35, the bent portion 311 is connected to one end of the arc piece 351, and the stationary contact 50 is mounted at the other end of the arc piece 351. Thus, when the elastic piece is pressed, the bending portion 311 can press the arc piece 351, the arc piece 351 can drive the movable contact 40 downward, the arc piece 351 has a certain radian, the sensitivity can be improved, and the resetting is faster.

Furthermore, a positioning hole can be formed in the elastic sheet, and the push rod 33 is used for being matched with the positioning hole in a positioning mode, so that the push rod 33 can be conveniently positioned and pressed, and the accuracy is higher.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. An adjustable thermal expansion temperature controller comprises an installation shell, a temperature sensing cylinder and a switch assembly, wherein a ceramic ring assembly, a first terminal piece and a second terminal piece are arranged on the installation shell, one end of the first terminal piece is clamped on the ceramic ring assembly, and the other end of the first terminal piece is formed into a first wiring end; one end of the second terminal piece is clamped on the ceramic ring assembly, and the other end of the second terminal piece is formed into a second wiring end; it is characterized in that the preparation method is characterized in that,

2. The adjustable thermostatic thermostat of claim 1 wherein the bellows has an adjustment stem at a top end thereof, the adjustment stem being mounted to the mounting housing and being movable toward and away from the actuating plate.

3. The adjustable thermostatic bulb as claimed in claim 2, wherein the top end of the mounting housing has a threaded hole, and the top end of the adjusting rod is threadedly engaged with the threaded hole.

4. The adjustable thermal expansion thermostat of claim 1, wherein the porcelain ring assembly comprises a first porcelain ring, a second porcelain ring and a third porcelain ring, the first porcelain ring, the second porcelain ring and the third porcelain ring being sequentially stacked and fixed by bolts; the first spring piece and the first terminal piece are clamped between the first ceramic ring and the second ceramic ring; and the static contact and the second terminal plate are clamped between the second ceramic ring and the third ceramic ring.

5. The adjustable thermal expansion thermostat of claim 1, wherein the switch assembly further comprises a second spring plate, a supporting plate and a mounting rod, one end of the supporting plate is fixedly connected to the ceramic ring assembly, the other end of the supporting plate is fixed with the mounting rod, the first spring plate is fixed to the mounting rod, one end of the second spring plate is fixed to the mounting rod, and the fixed contact is fixed to the other end of the second spring plate.

6. The adjustable thermal expansion thermostat of claim 5, wherein the first spring plate is provided with an elastic plate for forming the driving plate, the end of the elastic plate is provided with a bending portion bent downward, the second spring plate is provided with an arc plate, the bending portion is connected with one end of the arc plate, and the static contact is mounted at the other end of the arc plate.

7. The adjustable thermostatic device according to claim 6, wherein the resilient plate has a positioning hole, and the push rod is adapted to engage with the positioning hole.