Snap-action temperature controller with high sensitivity

A jump-type thermostat and high-sensitivity technology, which is applied to thermal switch components and other directions, can solve problems such as fire accidents, poor sensitivity, and slow temperature-sensing action speed, so as to improve the heat absorption efficiency of heat radiation and improve sensitivity and safety, and the effect of improving heat transfer efficiency

Active Publication Date: 2014-07-09
FOSHAN TIANPENG THERMOSTATS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the thermostat is controlled by the temperature-sensing component, it takes a certain amount of heat transfer time for the temperature-sensing component to absorb heat. Therefore, this traditional bimetal jumping thermostat has the disadvantages of slow temperature-sensing action and poor sensitivity. Cut off the circuit in time at the first time of overheating, but need to wait for a long time for heat absorption, so that the heat of the temperature-sensitive action parts reaches the set critical temperature, and the thermostat can suddenly jump.
As a result, the ambient temperature around the heating parts of the equipment is higher than the temperature controlled by the thermostat, especially for some high-power heating equipment, the temperature sensing speed of the thermostat is obviously lagging behind the controlled one, thus accelerating the aging of equipment parts , directly reduces the service life of the equipment, and even causes fire accidents in severe cases, reducing the working reliability of the thermostat

Method used

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  • Snap-action temperature controller with high sensitivity
  • Snap-action temperature controller with high sensitivity
  • Snap-action temperature controller with high sensitivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 , figure 2 and image 3 , a high-sensitivity jump-type temperature controller, including: shell 9, rivet 5, moving reed 8, moving contact 7, fixed plate 14, fixed contact 6, ceramic rod 4, guide seat 3, double The metal temperature sensing piece 2 and the cover 1; the moving reed 8 has a fixed end and a movable end, and the fixed end of the moving reed 8 is fixed to the inner cavity of the shell 9 by a rivet 5; the moving contact 7 is fixed on the moving reed 8; the fixed contact 6 is fixed to the inner cavity of the housing 9 through the fixed plate 14 and the rivet 5, and the fixed contact 6 is arranged opposite to the movable contact 7; the center of the guide seat 3 is provided with a guide hole, and the guide seat 3 Installed on the top of the shell 9; the bimetallic temperature sensing piece 2 is located on the guide seat 3, the bimetallic temperature sensing piece 2 has a central part 13, and the periphery of the central part 13 has no less than t...

Embodiment 2

[0060] see Figure 4 , The only difference between this embodiment and Embodiment 1 is that: as an improvement, the high-sensitivity jump-type thermostat in this embodiment is additionally provided with a movable bracket 15 . The movable bracket 15 is provided with a fixing hole, and the movable bracket 15 is sleeved on the outside of the casing 9 .

[0061] The movable bracket 15 provided with the fixing hole can be used for installing and fixing the temperature controller. The movable support 15 can move up and down along the outside of the shell 9, and can freely rotate 360 ​​degrees outside the shell 9 at the same time. Moreover, when the movable bracket 15 moves to the outside of the cover 1, the cover 1 has a clamping effect on the movable bracket 15, so that the movable bracket 15 is clamped and fixed. This greatly enhances the convenience of thermostat installation.

Embodiment 3

[0063] see Figure 5 , the only difference between this embodiment and Embodiment 1 is that: as an improvement, the cover 1 of the high-sensitivity snap-type thermostat in this embodiment is provided with an installation earring 16, and the installation earring 16 is integrally formed with the cover 1, And be provided with fixing hole on installing earring 16.

[0064] The installation earring 16 provided with the fixing hole can be used for installing and fixing the thermostat. Although the installation earrings 16 on the cover 1 are not as movable as the movable bracket 15 in the second embodiment, the installation earrings 16 and the cover 1 are integrally formed by one-time stretching of the mold, which is convenient for processing and saves processing costs ; At the same time, during the production process of the thermostat, one less part can be placed, thereby improving the assembly efficiency of the thermostat.

[0065] The working principle and function of the high-s...

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PUM

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Abstract

The invention provides a snap-action temperature controller with the high sensitivity. The snap-action temperature controller comprises a shell, a rivet, a movable contact spring, a fixed connecting board, a movable contact, a fixed contact, a ceramic rod, a guiding base, a duplex-metal temperature sensing sheet and a sealing cover. The movable contact spring is fixed to an inner cavity of the shell through the rivet; the movable contact is fixed to the movable end of the movable contact spring; the fixed contact is fixed to the inner cavity of the shell and faces the movable contact; a guide base is installed at the top of the shell; the duplex-metal temperature sensing sheet is provided with a center portion, at least three fixing feet are arranged on the periphery of the center portion, and the duplex-metal temperature sensing sheet is fixed to the portion between the guide base and the sealing cover through the fixing feet; the ceramic rod penetrates through a guide hole of the guide base and abuts against the portion between the movable contact spring and the duplex-metal temperature sensing sheet; the guide base and the shell are packaged together through the sealing cover. The snap-action temperature controller with the high sensitivity overcomes the shortages that a traditional snap-action temperature controller with a duplex metal sheet of a circular shape, a butterfly shape and the like is slow in action and long in thermal reaction time are overcome, the reaction speed and the sensitivity of temperature sensing action of the temperature controller are effectively improved, and temperature control of the temperature controller is made to be more accurate, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of temperature controllers, in particular to a high-sensitivity snap-type temperature controller. Background technique [0002] At present, the traditional bimetal snap-type thermostat is encapsulated by a sealed cover, and the main moving part is a disc-shaped bimetal temperature sensing piece, which will reversely jump after being heated. The ceramic rod inside the thermostat pushes the moving reed to realize the on-off of the moving contact and the fixed contact. The ceramic rod is inserted in the guide hole of the guide seat to move axially. Usually, the guide seat is solid except for the guide hole. [0003] Since the thermostat is controlled by the temperature-sensing component, it takes a certain amount of heat transfer time for the temperature-sensing component to absorb heat. Therefore, this traditional bimetal jumping thermostat has the disadvantages of slow temperature-sensing action and poor sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/52
Inventor 梁明乐杨文辉
Owner FOSHAN TIANPENG THERMOSTATS
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