CN201910368U

CN201910368U - Pressure temperature controller

Info

Publication number: CN201910368U
Application number: CN201020519272XU
Authority: CN
Inventors: 沈李根; 景济敏
Original assignee: JUNLE REFRIGERATION AUTOMATIC CONTROL ELEMENT CO Ltd SHANGHAI
Current assignee: JUNLE REFRIGERATION AUTOMATIC CONTROL ELEMENT CO Ltd SHANGHAI
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2011-07-27
Anticipated expiration: 2020-09-06

Abstract

Disclosed is a pressure temperature controller which comprises a temperature-sensing element, a temperature-sensing mechanism which consists of a diaphragm and a diaphragm seat, a transmission mechanism for the movement of the diaphragm and an actuating mechanism for a controlling circuit. The pressure temperature controller is characterized in that the temperature-sensing element is a unidiameter straight metal pipe, the straight metal pipe is connected with the diaphragm and the diaphragm seat to form a hermetic chamber, and temperature-sensing liquid is filled in the hermetic chamber; the transmission mechanism comprises an ejector pin, a clearance is reserved between the ejector pin and the diaphragm and the clearance is adjustable; and the actuating mechanism consists of a plurality of elastic elements and a plurality of contacts. When the straight metal pipe senses a certain temperature, the temperature-sensing liquid in the pipe is dilated and generates predetermined pressure, and then kick movement of the diaphragm occurs, the fixed contact and the moving contact are separated or closed by the transmission mechanism, and the protection effect is realized.

Description

Compression-type temperature controller

Technical field

The utility model relates to a kind of temperature limit device, particularly in the large-size air conditioning heating system, when the temperature controller Control Failure of firing equipment, carries out the compression-type temperature controller of manual recovery of the second class protection of superhigh temperature.

Background technology

Existing large car generally all adopts Electric heating with, heating installation peculiar to vessel; this device adopts bimetallic temperature controller to carry out temperature control mostly; bimetallic temperature controller has its limitation in the use; it need be installed in place near pyrotoxin; may disabler in long-time use, so need a kind of second class protection device to cut off the electricity supply with assurance equipment and personal security.

The utility model content

The purpose of this utility model is to provide in order to address the above problem that a kind of operating temperature is constant, reliable compression-type temperature controller is carried out in action.

To achieve these goals, a kind of compression-type temperature controller that the utility model is designed, the temperature-sensitive mechanism that is changed by temperature sensor, actuator's three parts of transmitting the transmission mechanism of temperature-sensitive mechanism action and being used for the commutation circuit break-make are formed.

Temperature-sensitive mechanism is made up of an isometrical metal straight pipe and diaphragm case, fills temperature sensing medium in the closed cavity of temperature-sensitive mechanism, causes the diaphragm action thereby produce change in volume after temperature sensing medium is experienced variations in temperature.

Transmission mechanism is made up of push rod and distance adjustment structure, push rod one end contacts with the movable contact spring of actuator, be responsible for the diaphragm action is passed to actuator, for guaranteeing electric clearance and the resolute opening and closing movement thereof between the dynamic and static contact of actuator, has the distance adjustment structure in the transmission mechanism, such as regulating with the thread screw mode.

Actuator is made up of dynamic and static contact, flexible member and binding post.Transmission mechanism is delivered to the action of temperature-sensitive mechanism on the movable contact spring of actuator, thus the position that causes movable contact spring move, to realize the break-make of circuit.Flexible member is responsible for making dynamic and static contact reliablely and stablely to be in disconnection or make position.

In actual use, earlier the temperature-sensitive pipe is extend into suitable location in the control temperature range, in this position thermostat is fixed then, again the binding post place in circuit is got final product at last.

The beneficial effects of the utility model are:

Though 1, but non-adjustable its spring temperature spot of the utility model spring temperature is stable, is suitable as the overtemperature protection system of professional domain.

2, action of the present utility model can not automatically reset, and is more safe and reliable.

3, the utility model can realize that multi-line controls simultaneously.

4, since the temperature-sensitive pipe have certain-length, can make thermostat main part (being transmission mechanism and actuator's part) place control outside the temperature range, be in low-temperature space, thereby can guarantee the long-term useful life of thermostat.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is an internal structure cutaway view of the present utility model;

Fig. 2 is a partial sectional view of the present utility model;

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand

Understand,, further set forth the utility model below in conjunction with concrete diagram.

Referring to Fig. 1, a kind of compression-type temperature controller, comprise a cover assembly, housing, transmission mechanism and actuator, cover assembly comprises upper cover body 12 and the temperature-sensitive mechanism that is made up of temperature-sensitive pipe 10, diaphragm case 11, transmission mechanism comprises briquetting 9, push rod 6, push rod 6 and briquetting 9 be by being threaded, and actuator comprises that the static contact 4, movable contact spring 2, slide block 3, spring 5, the push rod locating piece 7 that are fixed on the housing 1 form.Movable contact spring 2 passes through rivet together with slide block 3, and spring 5 one ends are fixed on the housing, and the other end contacts with slide block 3.

Referring to Fig. 2, static contact 4 links to each other with B with housing and screw thread terminals A by riveted joint, when diaphragm case 11 does not move, because the elastic force of spring 5 promotes slide block 3 and the two ends of the movable contact spring 2 that is fixed together is contacted with static contact respectively, so binding post A and B are by the be connected to on-state of static contact 4 with movable contact spring 2.

Referring to Fig. 1 and 2, after temperature-sensitive pipe sense 10 is subjected to uniform temperature, its internal liquid pressure that produces that expands makes diaphragm case 11 that spring-like movement take place, and promotes push rod 6 and be subjected to displacement downwards with the pressure that briquetting 9 makes slide block 3 overcome spring 5, thereby makes movable contact spring and static contact disconnection.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.

Claims

1. compression-type temperature controller, comprise the temperature-sensitive mechanism that forms by temperature-sensing element, diaphragm and diaphragm seat, the transmission mechanism of a diaphragm action and the actuator of a control circuit, it is characterized in that described temperature-sensing element is an isometrical metal straight pipe, described metal straight pipe and diaphragm, the diaphragm seat composition confined space that links together is equipped with temperature sensing liquid in this confined space; Described transmission mechanism comprises a push rod, is reserved with gap and this adjustable gaps joint between this push rod and the diaphragm; Described actuator is made up of contact, flexible member and binding post.

2. compression-type temperature controller according to claim 1, it is characterized in that: described contact comprises static contact and movable contact spring, static contact is fixed on the housing, movable contact spring is fixed on the slide block of an activity, promotes this slide block by flexible member and makes dynamic and static contact be in disconnection or make position under initial condition.