CN206164872U - PTC (Positive temperature coefficient) heater - Google Patents

Abstract

The utility model provides a PTC (Positive temperature coefficient) heater, including the PTC (Positive temperature coefficient) heater core, a housing, temperature sensor and fixed temperature sensor's support, the support includes fixed plate and cavity pipe, the casing front end is opened and is had can embedded fixed cavity pipe and the recess of fixed plate in the bottom position in the middle of, make the fixed bolster occupy volume still less, the cavity pipe sets up the intermediate position at the fixed plate, the extended length of cavity pipe is to the middle part position of PTC (Positive temperature coefficient) heater core, the inside clamp that sets up of cavity pipe, last the opening of temperature sensor has the draw -in groove, the clamp of cavity pipe can be used for fixed block temperature sensor with temperature sensor's card slot well -matched, messenger temperature sensor's inductive head just in time is in the middle part position of PTC (Positive temperature coefficient) heater core. The utility model discloses set up temperature sensor in the middle part position of PTC (Positive temperature coefficient) heater core, reaction temperature that can be the fastest changes, in time cuts off high voltage power supply, improves the reaction rate, reduces the potential safety hazard.

Description

A kind of ptc heater

Technical field

This utility model belongs to electric heating field, and in particular to a kind of ptc heater.

Background technology

Temperature sensor on existing ptc heater is installed in housing side, and effect is when ptc heater exceedes necessarily During temperature, cut off the electricity supply in time, prevent the phenomenon for melting housing or spontaneous combustion；But the defect of this structure is：1st, temperature is tested Degree is not ptc heater peak temperature, it is impossible to feed back peak temperature, response lag in time；2nd, it is only used for transmitting excess temperature Signal is to controller, and purposes is single.

The content of the invention

For above technological deficiency, this utility model provides a kind of ptc heater, temperature sensor is arranged on PTC and is added The medium position of hot device core body, reaction temperature that can be most fast changes, and timely cutoff high power supply improves response speed, reduces Potential safety hazard.

The technical solution adopted in the utility model is：A kind of ptc heater, including ptc heater core body, housing, temperature The support of sensor and fixed temperature sensor, support includes fixed plate and hollow conduit, the central bottom position of housing forward end Being provided with can embed the groove of fixed hollow conduit and fixed plate, make fixed support take less volume, and hollow conduit is arranged In the centre position of fixed plate, the length of hollow conduit extends to the medium position of ptc heater core body, sets inside hollow conduit Clip is put, draw-in groove is provided with temperature sensor, the clip of hollow conduit can match for solid with the draw-in groove of temperature sensor Surely temperature sensor is engaged, the inductive head for making temperature sensor is exactly in the medium position of ptc heater core body.

Preferably, fixed plate is positive square, and four angles arrange four fixing holes.

The beneficial effects of the utility model are：1st, it is temperature highest in the middle of ptc heater core body due to heat accumulation Part, in ptc heater excess temperature, reaction temperature that can be most fast changes this utility model, so as to timely cutoff high power supply, Prevent housing melt or spontaneous combustion phenomenon, during substantial amounts of experimental verification, same temperature, the location point can be earlier than The response time of side location point 5S；

2nd, the temperature sensor of ptc heater core body medium position is arranged on, ptc heater can be really reacted normal In work, the change of leaving air temp, so as to provide more comprehensive temperature variation data, is transferred to entire car controller；Therefore exist Leaving air temp can also be monitored in the course of work, so as to reach the requirement of automatic air condition temperature adjustment, the temperature sensing can be allowed Device possesses the purposes of several functions, and the configuration of temperature sensor can lack one, so as to cost-effective.

Description of the drawings

Fig. 1 is assembly figure of the present utility model；

Fig. 2 is structure decomposition figure of the present utility model；

Fig. 3 is the internal structure schematic diagram of this utility model hollow conduit.

In figure：1-PTC heater cores；2- housings；3- temperature sensors；4- fixed plates；5- hollow conduits；6- grooves； 7- clips；8- draw-in grooves；9- fixing holes.

Specific embodiment

Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings, as shown in Figure 1, 2, 3, this Utility model provides a kind of ptc heater, including ptc heater core body 1, housing 2, temperature sensor 3, also one fixed temperature The support of degree sensor, support includes fixed plate 4 and hollow conduit 5, and the central bottom position of the front end of housing 2 is provided with and can embed The groove 6 of fixed hollow conduit 5 and fixed plate 4, makes support take less volume, facilitates the assembling of ptc heater, hollow to lead Pipe 5 is arranged on the centre position of fixed plate 4, and the length of hollow conduit 5 extends to the medium position of ptc heater core body 1, hollow The inside of conduit 5 arranges clip 7, and draw-in groove 8 is provided with temperature sensor 3, and the clip 7 of hollow conduit 5 can be with temperature sensor 3 Draw-in groove 8 matches for fixed engaging temperature sensor 3, and 3 sets of temperature sensor is through in hollow conduit 5, and what is worn stretches out length Degree makes the inductive head of temperature sensor 3 be exactly in the medium position of ptc heater core body 1.

Further, fixed plate 4 is positive square, and four angles arrange four fixing holes 9.

This utility model design structure rationally, on the premise of ptc heater temperature sensing function is improved, does not additionally increase The volume of ptc heater, has reached optimal design.

The foregoing is only preferred implementation of the present utility model, it is noted that for the ordinary skill people of this area For member, on the premise of design is created without departing from this utility model, deformation can also be made and improved, should all belong to this practicality New protection domain.

Claims (2)

1. a kind of ptc heater, including ptc heater core body, housing, temperature sensor, it is characterised in that：Described PTC adds Hot device also includes the support of a fixed temperature sensor, and described support includes fixed plate and hollow conduit, before the housing The central bottom position at end is provided with the groove that can embed fixed hollow conduit and fixed plate, and described hollow conduit is arranged on solid The centre position of fixed board, the length of hollow conduit extends to the medium position of ptc heater core body, and hollow conduit inside arranges card Hoop, is provided with draw-in groove in described temperature sensor, the clip of the hollow conduit can match with the draw-in groove of temperature sensor For fixed engaging temperature sensor, the inductive head for making temperature sensor is exactly in the medium position of ptc heater core body.

2. ptc heater according to claim 1, described fixed plate is positive square, and four angles arrange four fixations Hole.