CN205478002U - Novel air intake heater - Google Patents

Abstract

The utility model relates to a novel air intake heater belongs to the engine technology field. Current air intake heater, it can not change the heat power of self along with external demand, and the energy consumption is high, the utility model discloses fine solution this problem. The utility model discloses a heater casing and sheetmetal, sheetmetal are located the heater casing, still include low temperature PTC pottery heating element, and low temperature PTC pottery heating element set up between two sections sheetmetals. The utility model is used for the engine.

Description

Novel gas inlet heater

Technical field

This utility model relates to novel gas inlet heater, belongs to technical field of engines.

Background technology

At present, the most frequently used air-intake heating mechanism of engine is sheet metal electric heater (belonging to resistance heater), its ultimate principle Being that engine charge is heated by the heating after being energized by sheet metal, structure is divided into heating wire form and sheet type, both The principle of heating of heater is the same.

Above-mentioned this technical scheme, the heating power of heater is non-adjustable, at needs, electromotor carries out inlet air heating, and needs Heating power less time (when ambient temperature is not the lowest, the power that intake air temperature rises to required value need not the biggest), The power of heater still maintains its rated power, causes energy dissipation.Heater power P=U²/ R, adds on the heaters Voltage U is substantially without change, and the resistance R of sheet metal is also substantially without change, so heater will not change with extraneous demand Become the heating power of self.

Utility model content

The purpose of this utility model is to solve the drawbacks described above that prior art exists, it is proposed that a kind of novel gas inlet heater, its Reduce metal electrical heating power consumption when electromotor runs in low temperature environment, own power can be automatically adjusted according to intake air temperature, On the premise of satisfied actual heating requirements, it is achieved reduce power consumption, reach energy-conservation purpose.

This utility model is to use following technical scheme to realize: a kind of novel gas inlet heater, including heater housings and gold Belonging to sheet, sheet metal is positioned at heater case body, also includes that lower Tc PTC ceramic heating element, lower Tc PTC ceramic heating element set Put between two sections of sheet metals.

As preferably, described lower Tc PTC ceramic heating element is positioned at inside heater housings.

As preferably, between power supply and heater, it is provided with the electromagnetic valve of control circuit break-make.

The beneficial effects of the utility model are:

Initial power of the present utility model is big, and under same size, its peak power ratio common PTC-ceramic heater is high, will not Less than conventional metals plate heater, and its rated power and conventional metals formula heater peer-level.And this utility model can It is automatically adjusted heating power according to variation of ambient temperature, on the basis of meeting job requirement, reaches energy-conservation purpose.

Accompanying drawing explanation

Fig. 1 is schematic front view of the present utility model；

Fig. 2 is schematic top plan view of the present utility model；

Fig. 3 is operation principle sketch of the present utility model.

In figure: 1 heater housings 2 heater positive terminal 3 sheet metal 4 lower Tc PTC ceramic heating element 5 adds Hot device negative terminal.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is described further.

Described novel gas inlet heater, including heater housings 1, heater positive terminal 2, sheet metal 3, lower Tc PTC Ceramic heating element 4 and heater negative terminal 5, as shown in Figure 1.This utility model both positive and negative polarity wiring by heater External world's power supply is received on heater by post, and lower Tc PTC ceramic heating element 4 is between two sections of sheet metals 3, and position is partial to Inside heater (i.e. corresponding with inlet side side), see Fig. 2.Its break-make is controlled by an electromagnetic valve between power supply and heater Electricity, is shown in Fig. 3.

This utility model can be along with the change regulation heating power of external heat；And self-heating can be promoted in initial start stage Power, brings up to required value by initial charge temperature, simultaneously this new type heater and conventional engines air intake heater structure one Cause, it is not necessary to engine structure is improved, it is simple to complete machine is arranged, and it is to be regulated by the resistance-temperature characteristic of self to send out Thermal power, it is not necessary to traditional control system is modified.

This utility model has a following duty:

During engine cold-start, this novel gas inlet heater can provide big heat radiation power, to adding when meeting engine cold-start The high power requirements of hot device, promotes intake air temperature.Mainly realizing principle is: during engine start, at heater, temperature is the lowest, The resistance of lower Tc PTC ceramic heating element is the least, and the dividing potential drop in whole heating circuit is the least, and supply voltage mainly loads On the sheet metal of heater, its on-load voltage U1 ≈ supply voltage U, by power P=U²/ R understands, and its heating power can reach To the performance number of conventional metals formula heater, simple principle figure is shown in that Fig. 3, Fig. 3 include that the heating of sheet metal resistor, PTC-ceramic is first Part resistance, electromagnetic valve and power supply.It is to say, when engine cold-start, novel gas inlet heater has and conventional metals formula Same high-power of heater.

Sheet metal resistor value described in the preceding paragraph is turned down, can improve to a certain extent whole heater peak power (with The lifting of lower Tc PTC ceramic heating element temperature, peak power will not maintain the long time, the whole circuit of indirect protection), I.e. starting the initial stage under engine low temperature environment, the initial power of electric heater is big, quick heating, it is ensured that electromotor quick starts, Its principle is: the original state under low temperature environment, and the resistance in the whole circuit of heater is minimum, by P=U²/ R understands, this Time power maximum, intake air temperature can be allowed to reach required value within the shorter starting time, reach the purpose of fast starting.

Electromotor runs at low ambient temperatures, and heater needs under the operating mode always heated to engine charge, and novel gas inlet heats Device can be automatically adjusted heating power according to the actual requirements, meets air inlet temperature rise demand, reduces energy consumption, and it mainly realizes principle For: when electromotor operates under different operating mode, the heater heat radiation power needed for inlet air heating to required value is different.Lower Tc PTC Ceramic heating element is in the inner side of heater, when the intake air temperature after heating raises, by the air inlet after sheet metal and heating Temperature affects, and according to the characteristic of lower Tc PTC ceramic heating element, the own temperature of lower Tc PTC ceramic heating element can raise, Its resistance also can raise, and now, its dividing potential drop also can increase, and the voltage being loaded on sheet metal can decline, in whole circuit Electric current the most just have dropped, the heating power P=I of heater²R (resistance becomes first power to decline, and electric current becomes quadratic power to decline, so The trend of power is to decline) also can decline, on the premise of maintaining intake air temperature to conform to evaluation, i.e. reach energy-conservation purpose.

Certainly, foregoing is only preferred embodiment of the present utility model, it is impossible to be considered for limiting the enforcement to utility model Example scope.This utility model is also not limited to the example above, and those skilled in the art are in reality of the present utility model Impartial change and the improvement etc. made in the range of matter, all should belong to this utility model patent covering scope.

Claims (3)

1. a novel gas inlet heater, including heater housings (1) and sheet metal (3), sheet metal (3) is positioned at heater In housing (1), it is characterised in that: also include lower Tc PTC ceramic heating element (4), lower Tc PTC ceramic heating element (4) It is arranged between two sections of sheet metals (3).

Novel gas inlet heater the most according to claim 1, it is characterised in that: described lower Tc PTC ceramic heating element (4) heater housings (1) inner side it is positioned at.

Novel gas inlet heater the most according to claim 1, it is characterised in that: it is provided with control electricity between power supply and heater The electromagnetic valve of road break-make.