CN2147134Y

CN2147134Y - Waste heat warming device for passenger vehicles

Info

Publication number: CN2147134Y
Application number: CN 92245794
Authority: CN
Inventors: 胡隆章
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-30
Filing date: 1992-12-30
Publication date: 1993-11-24
Anticipated expiration: 2002-12-30

Abstract

The utility model provides a waste heat warming device for a passenger vehicle, which is composed of a condensate water pipe (1), a radiator (2), a steam branched pipe (4), an aeration pipe (7), a scavenge pipe (12), a noise elimination heat exchanger (22), a temperature adjustment valve (19), a thermoregulator (10), a steam main (20), etc. The steam inlet pipe of each radiator is communicated with the steam generation chamber of the noise elimination heat exchanger through the steam branched pipe and the steam main with joints; the drain pipe of each radiator is communicated with the water inlet of the noise elimination heat exchanger through the condensate water pipe and the aeration pipe. The utility model has the advantages of simple structure, low cost, high thermal efficiency and good performance, and the waste heat warming device for a passenger vehicle is particularly suitable for the passenger vehicles which run in the cold areas to use.

Description

Waste heat warming device for passenger vehicles

The utility model belongs to a kind of passenger vehicle waste heat heating system, by condensate pipe (1), radiator (2), steam be in charge of (4), noise elimination heat exchanger (22), coolerstat (10), thermostatic valve (9), steam main parts such as (20) are formed.

At present, the heating of passenger vehicle, some is to utilize the refrigerant fluid waste heat.Common refrigerant fluid waste heat heating system is exactly various heater units.These heater units can't use at the passenger vehicle of arctic operation because its heating load is few, and a space is bigger taking advantage of.

The simplest a kind of heating system that utilizes exhaust heat is that the exhaust pipe of engine is directly introduced the compartment heating, and then draws the compartment through the noise silencer exhaust to atmosphere.Because exhaust temperature is up to more than 400 ℃, as long as it is enough to introduce the freeing pipe length (or dissipating area) in compartment, the heating load of this device also is enough.But the major defect of this device is: the joint of introducing the freeing pipe in compartment is easy to cause waste gas to leak to the compartment under the effect repeatedly of Vehicular vibration and cabin floor distortion, even leads to the CO intoxication accident.And because the Tail Pipe Temperature height, be easy to scald the passenger, and burn out passenger's clothing, simultaneously because freeing pipe length increases, and increase the corner, will inevitably increase resistance of exhaust, the dynamic property and the economy of driving engine all there is adverse effect.

Another kind of exhaust heat heating system is to install heat exchanger additional on the freeing pipe below the cabin floor, and the cold air of (or car is outer) is sent into the compartment again for heating after sending into the heat exchanger heating by blower fan in the car.This device mainly partly is made up of the shell-and-tube heat exchanger with noise elimination function (noise elimination heat exchanger), blower fan, airduct etc.After entering heating season, the waste gas that driving engine is discharged is no longer through former noise silencer and through noise elimination heat exchanger exhaust to atmosphere, and blower fan is pressed into and sends the compartment again back to for heating after the noise elimination heat exchanger heats up from compartment draw in cold air.Blower fan is driven by DC motor.The driver can borrow the open and close electrical motor to regulate compartment temperature according to individual's sensation.The defective of this device is: still do not have to solve and contain the problem of the waste gas of CO and peculiar smell to the compartment internal leakage; The method of regulating compartment temperature by the open and close of electrical motor owes rationally to influence the service life of noise elimination heat exchanger simultaneously; The blower fan consumption of current is also bigger than normal.

The purpose of this utility model is to avoid the weak point of above-mentioned prior art, provide a kind of simple in structure, with low cost, heating efficiency is high, performance is tending towards perfect passenger vehicle waste heat heating system.This device with water as heating agent, solved the drawback that the engine exhaust that has peculiar smell and CO enters the compartment effectively.

The purpose of this utility model be achieved in that by condensate pipe (1), radiator (2), steam be in charge of (4), breather pipe (7), ventilation tube (12), a noise elimination heat exchanger (22), coolerstat (10), thermostatic valve (19), steam main parts such as (20) have been formed passenger vehicle waste heat heating system.The admission pipe (18) of each radiator (2) all by joint through steam be in charge of (4), steam main (20) is communicated with the vapor generating cavity of noise elimination heat exchanger (22), each radiator (2)) coolant outlet pipe (17) be communicated with the water inlet of noise elimination heat exchanger (22) through condensate pipe (1), breather pipe (7).

Said noise elimination heat exchanger (22) has one group of flat tube (35), and in the flange slotted hole on its two ends insertion tube sheets (34), the inside face with core shell (43) around tube sheet (34) flange fixes.

Core shell (43) and tube sheet (34) constitute inner chamber, are separated into vapor generating cavity (53) and water storage cavity (60) by dividing plate (52), and two chambeies borrow dividing plate (52) following open communication.

Said thermostatic valve (19) has valve body (73), is fixed with air inlet pipe (37), angle pipe (74) and angle pipe (84) on it, is communicated with the exhaust pipe of engine (16), noise silencer (21) and noise elimination heat exchanger (22) respectively.

Valve body (73) inner chamber is fixed with upper and lower axle sleeve, and the rotating shaft (87) that has valve block (82) is rotated together with valve block (82) in axle sleeve.

The upper end of rotating shaft (87) has pivoted arm (75), and the two ends of this pivoted arm have spring (76,85), and the other end of spring (76) is fixed on the spring hanging column (77) on the valve gap (78), and the other end of spring (85) links to each other with seizing wire (83).

Coolerstat (10) has the gearshift groove, links with valve block (82).

Said ventilation tube (12) has resonant cavity (103,98).Sidewall (104) between the forward and backward orifice plate (102,97) is provided with sound-absorbing material (95).

The utility model has following advantage compared to existing technology:

1, the engine exhaust that has peculiar smell and a CO can not enter the compartment, has solved the safety of exhaust heat heating system effectively, guarantees driver and passenger's safety.

2, simple in structure, parts such as electrical motor, circulation pump, blower fan need be set, the produce and market cost descends.

3, heating system does not need electricity consumption, neither needs to change original electrical generator, and also needn't worry night travel influences the cranking battery charging.

4, heating efficiency height, performance are good, and heating agent adopts common distilled water or boiling water, utilize the phase-change heat-exchange of water, and not only heat exchange efficiency height, and use cost descends.

Accompanying drawing and drawing are described as follows:

Fig. 1 is the utility model scheme of installation

Fig. 2 is a noise elimination heat exchanger longitudinal sectional view

Fig. 3 is a noise elimination heat exchanger transverse sectional view

Fig. 4 is the heat spreader structures section-drawing

Fig. 5 is the thermostatic valve structural representation

Fig. 6 is the coolerstat section of structure

Fig. 7 is ventilation tube generalized section

Below in conjunction with accompanying drawing the utility model is further described:

With reference to Fig. 1, the utility model is made up of noise elimination heat exchanger (22), thermostatic valve (19), steam main (20), radiator (2), condensate pipe (1), breather pipe (7), coolerstat (10), defogger (11), ventilation tube main portions such as (12).The admission pipe (18) of each radiator (2) all use heat enduring rubber adaptor union, elbow or T-pipe joint through steam be in charge of (4), steam main (20) is communicated with the vapor generating cavity of noise elimination heat exchanger (22).The coolant outlet pipe (17) of each radiator (2) then is communicated with the water inlet of noise elimination heat exchanger (22) through condensate pipe (1), breather pipe (7).Steam pipe and condensate pipe all are the thin-wall aluminum alloy pipes that is surrounded by heat-insulation layer, with expendable weight, prevent corrosion.

After bus engine (15) starting, the handle that the driver can spur coolerstat (10) places the III P PARK Position P.Valve block in the thermostatic valve (19) is just closed noise silencer (21) fully, makes whole waste gas of driving engine (15) enter noise elimination heat exchanger (22) exhaust to atmosphere then through freeing pipe (16), thermostatic valve (19).Ice in the noise elimination heat exchanger (22) will dissolve into water rapidly and heat up.After passenger vehicle starting, noise elimination heat exchanger (22) will be in charge of (4) and radiator admission pipe (18) from each radiator of trend (2) delivering vapor by steam main (20), steam.Steam condenses into water in radiator (2), emit the latent heat of vaporization, and is dispersed in the compartment for passenger and Si, sells personnel heating.Condensed water in the radiator then returns the water inlet of noise elimination heat exchanger (22) through coolant outlet pipe (17), condensate pipe (1) and breather pipe (7).So move in circles, the temperature in compartment (3) just can remain within the certain limit (10～16 ℃).

On the top of breather pipe (7) temperature detector (6) is housed, under big, the fast situation of passenger vehicle load, also corresponding the increasing of quantity of steam that noise elimination heat exchanger (22) takes place, so that when radiator (2) can not condense into water with whole steam, excessive steam will be through breather pipe (7) upper end, the overflow pipe exhaust to atmosphere of filler cap (5) below.At this moment, what temperature detector (6) was experienced will be vapor (steam) temperature, and temperature controller will send sound and optic signal, remind the driver that the handle of coolerstat (10) is changed to low gear position, thermostatic valve (19) will be opened noise silencer (21), make part waste gas through the noise silencer exhaust to atmosphere, the quantity of steam that noise elimination heat exchanger (22) takes place is corresponding minimizing, thereby the quantity of steam that noise elimination heat exchanger (22) takes place and the condensing amount of radiator (2) are restored balance.When vehicle interior temperature surpasses 16 ℃ or when being lower than 10 ℃, temperature controller also can send sound and optic signal, reminds the handle gear of driver's conversion coolerstat (10), and vehicle interior temperature is remained between 10～16 ℃.

In a single day passenger vehicle at arctic operation installs heating system, is easy to frosting on the preceding windscreen, influences driver's sight line.Therefore, in heating, the driver can open defrosting valve (9), make steam enter defogger (11), start the motor and the fan of defogger simultaneously, by the just upwards ejection of hot blast that defogger produces through fan-shaped slit, the inside face of windscreen before a part of hot blast directly is sprayed onto, and near preceding windscreen, form warm air curtain.As long as the temperature and the compartment temperature of preceding windscreen inside face are approaching, the water vapour in the car (because of the occupant breathes) just can not frosting on preceding windscreen.

For solving compartment ventilation problem, the tube (12) of taking a breath is housed on car bonnet (8), its position must keep end opening to face and close cooling fan of engine (13).The air-flow that cooling fan (13) is agitated is heated when passing cooling water radiator (water tank) (14) from outside the car.Therefore,, both utilized the part of waste heat of refrigerant fluid, and can keep with fresh air in the car again by the hot air in ventilation tube (12) introducing compartment (3).Eliminate the noise and the sound absorption measure owing to have in the ventilation tube (12), the various noises of car bonnet (8) below can all not enter the compartment yet.

With reference to Fig. 2, Fig. 3, the heat exchange element in the noise elimination heat exchanger is one group of flat tube (35).The radical of flat tube and size can be determined by required heat interchanging area.Flat tube can be with the suitable solid drawn pipe press forming of bore, also available belt steel rolling, and form through dielectric bonding.Flat tube has higher coefficient of heat transmission than pipe, and is easy to lateral deformation.In the flange slotted hole on the tube sheet (34) of the two ends insertion peripheral flanging of flat tube (35), in the end and flat tube (35) seam of slotted hole flange.Inside face seam at tube sheet (34) peripheral flanging end and core shell (34).Borrow fore and aft diaphragm (52) to be separated into two parts by the inner chamber that core shell (43) and two pipe utmost points (34) constitute, be vapor generating cavity (53) and water storage cavity (60), two chambeies borrow dividing plate (52) following open communication, and the water consumption of vapor generating cavity (52) can be replenished at any time by water storage cavity (60).For preventing that the water in the vapor generating cavity (52) from producing concuss and splashing in the bus driving process, be separated into several loculuses to vapor generating cavity with comb plate, comb joint (32).Swinging orifice plate (33) with subtracting of a unification above each loculus covers.The lower end that comb plate, comb joint (32) is gone up each " tooth " all with flat tube (35) seam, the upper limb of comb plate, comb joint then swings orifice plate (33) seam with subtracting.

When needing heating, waste gas from driving engine (15) enters expansion chamber (38) through thermostatic valve (19) from air inlet pipe (37), expand once again after passing the aperture on the orifice plate (36) then, entering flat tube (35) expands once again after flowing out flat tube, and then the aperture that passes through on the back plug (25) of core shell (43) enters resonant chamber (23), pass through at last on the trail pipe (24) aperture and from the tail pipe exhaust to atmosphere.In waste gas is flowed through the process of flat tube (35), its heat content is the water around tube wall is passed to just, and make it to heat up, seethe with excitement, vaporize, just cracked ends steam outlet pipe (31) and steam pipe (20), (4) and (18) are not transported to each radiator (2) to the steam that is taken place.Steam condenses into water in radiator, return water storage cavity (60) through condensate pipe (1) and coolant inlet pipe (29) then.

When the water in vapor generating cavity (53) did not seethe with excitement as yet, the water surface of vapor generating cavity (53) and water storage cavity (60) was in co-altitude a basically.Coming to life, a large amount of vaporizations, and when each radiator steam supply, steam pressure will force the underwater of vapor generating cavity to drop to height b, the water surface of water storage cavity then rises to height c.Height c is exactly to be used for overcoming the required pressure head of steam flow resistance (millimeter water column height) with the difference of height b.The resistance to flow of steam is increasing and increase with steam generating amount, if steam generating amount is excessive, so that when radiator can not total condensation, the excessive phenomenon of steam flow resistance then will appear, showing as flat tube (35) surfaces, and condensate pipe (1) will be submerged in below the water surface, even might spray steam even hot water outside car from the overflow pipe (54) of breather pipe (7) upper end filler cap (5) below.Therefore, suitably strengthen the bore of steam outlet pipe (31) and steam pipe (20), (4), (18), reduce the resistance to flow of steam, and in use according to the handle position of the timely conversion coolerstat of the signal of temperature controller (10), this is the essential condition that guarantees normal heating.

Under the situation of normal heating, the function of breather pipe (7) is: noise elimination heat exchanger (22) is to the initial stage of each radiator (2) steam supply, radiator and ducted everywhere air will be squeezed by steam, make it from overflow pipe (54) exhaust to atmosphere of filler cap (5) below; After steam supply, heat radiation enter normal condition, the condensed water that returns water storage cavity (60) will evaporate voluntarily, produce steam, attempt is overflowed from overflow pipe (54), for reducing the consumption of water, uses jam (55) osed top sleeve pipe (56) on the inner chamber of breather pipe (7) installs one additional, and radiating gill is set at the breather pipe outside face, when the steam rising enters breather pipe, be divided into tubular sheeting and be condensed into water rapidly by sleeve pipe (56), return water storage cavity; When steam generating amount excessive, breather pipe (7) is when being not enough to condensed steam, overflow pipe (54) will have steam to spray outside car, the temperature of filler cap (5) below will rise to boiling of water and account for, temperature detector (6) will make temperature controller send sound and optic signal, remind the handle position of driver's conversion coolerstat (10), the condensing amount of steam generating amount and radiator is restored balance.Breather pipe (7) is in interior, and the lower end is communicated with coolant inlet pipe (29) with rubber fittings (58), and with clamp (57) that adaptor union (58) card is firm, and overflow pipe (54) is then guided under the cabin floor downwards in car.

Water surface plug screw (59) is in order to the water surface elevation in the control noise elimination heat exchanger (22), when water surface decline, when moisture storage capacity was not enough, the driver can turn on filler cap (5), add distilled water or boiling water (must not add unboiled water) to water storage cavity (60), till the outside spilling water of water surface spiro pluging hole.At set intervals, the water in the noise elimination heat exchanger will be mixed with foreign material such as iron rust, and color is infused transparent no longer clearly.Can turn on draining plug screw (46) this moment, with old water emptying, adds new distilled water or boiling water ((49) are drain gutter) again.

Waste gas is in the process of noise elimination heat exchanger of flowing through, and flow area will repeatedly be undergone mutation, and pass through the throttling pore on the plug (25) and trail pipe (24) behind orifice plate (36), the core shell; Also to rub with wall generation everywhere; Exhaust roar also can come back reflective throughout, and therefore, the energy that exhaust roar had will have the consumption or the transfer of certain degree, thereby the exhaust roar of each frequency range is subdued.

In the heating process, the temperature of flat tube (35) is the highest, and core shell (43) takes second place, shell (42) minimum (near ambient-air temperature).For preventing that parts from damaging, be provided with expansion joint (28) at the rear portion of core shell (43), with the displacement because of expanding with heat and contract with cold and producing between compensation flat tube (35) and the core shell (43).But the inner chamber of expansion joint (28) has been linked up vapor generating cavity (53) and water storage cavity (60), and this will make steam scurry into water storage cavity (60) through the expansion joint inner chamber.For this reason, the opening part of expansion joint (28) install additional one with dividing plate (52) shading ring of seam (27) mutually, the passage between vapor generating cavity (53) and the water storage cavity (60) is cut off.Other has a small baffle (50), its left end and tube sheet (34) seam, and upper end and core shell (43) seam, and be connected with dividing plate (52) work is unsteady by rivet (51), flat gasket (48) and heat enduring rubber packing ring (47).When flat tube (35) when being subjected to expanding with heat and contract with cold, tube sheet (34) will drive core shell (43) and dividing plate (52) moves together with shading ring (27), will be under the situation of applying mutually between this moment dividing plate (52) and the small baffle (50) slide relative.The preceding plug (41) and the front head (39) of core shell (43) all have bigger elasticity, the expanding with heat and contract with cold of unlikely obstruction flat tube (35) and core shell (43).

On the outside face of core shell (43), be welded with two carrier rings, promptly preceding carrier ring (44) and back carrier ring (26), but have only back carrier ring (26) and shell (42) seam, and preceding carrier ring (44) can be free to slide at the inside face of shell (42).Four jiaos of seam mutually of four angle bar (45) and core shell (43) are arranged between forward and backward carrier ring, the interior angle of angle bar (45), except that the bending place, do not contact and gapped △ with core shell (43), the possibility of outside expansion is arranged with the middle part that guarantees core shell (43).The exterior angle of four angle bar and inner surface of outer cover are fitted, and can be free to slide.For making expanding with heat and contract with cold of core shell (43) not be subjected to any obstruction, be welded in steam outlet pipe (31), coolant inlet pipe (29) on the core shell, leave very big gap between draining plug screw (46) and water surface plug screw (59) and the shell (42).For the fiber fines that prevents heat preservation rock (40) scatters and disappears, all install rock wool ring washer (30) at gap location.

With reference to Fig. 4, the used radiator of the utility model belongs to multitube enclosed convector.Header (68) is communicated with parallel thin-wall steel tube (70) with (69), and suit many flanging radiating gills (67) that have the flange hole on steel pipe.Install radiating gill (67) and, promptly carry out pickling, carry out pot galvanize then after steel pipe two ends and header (68) and (69) seam.Admission pipe (18), coolant outlet pipe (17) respectively with header (68), (69) seam, on header (68) and (69), weld support (62) and (72) again.

Two bolts hole are arranged on the support (72), the radiator right-hand member is fixed on the cabin floor (61) with two bolts (71); Have only a Long Circle bolt hole on the support (62), the radiator left end is fixed on the cabin floor (61) with bolt (65), spring (63) and the spring perch (64) etc. of being with shoulder.When expanding with heat and contract with cold, the radiator left end can be together with moving freely about support (62).

The diagonal-cut joint of direction as shown is adopted in the exit of admission pipe (18), makes steam enter the distribution of header (68) back between each steel pipe and is close to evenly.The height that admission pipe (18) stretches into header (68) will be equal to or greater than half of header (68) height, splashes or scurries in the admission pipe (18) in case accumulate in the condensed water of radiator (2) bottom when driving.The suitable for reading of coolant outlet pipe (17) will make the outflow of condensed water unobstructed a little less than the inner bottom surface of header (69).

Fig. 5 and Fig. 6 are the constructionals drawing of thermostatic valve (19) and coolerstat (10).

Thermostatic valve (19) string is contained on the waste pipe (16), is welded with the air inlet pipe (37) that is communicated with the exhaust pipe of engine (16) on valve body (73); The angle pipe (74) that is communicated with noise silencer (21); The Dou mouth pipe (84) that is communicated with noise elimination heat exchanger (22).Fillet welding at valve body (73) inner chamber has upper and lower two axle sleeves, and the rotating shaft (87) that has valve block (82) can be rotated together with valve block (82) in axle sleeve.The upper end of rotating shaft (87) is welded with pivoted arm (75), and respectively there is a spring hanging column (86) at the pivoted arm two ends.On valve gap (78), be provided with fixing spring hanging column (77).Pull back spring (76) just is articulated on (86) and (77).The moment that the tension force of pull back spring (76) produces valve block (82) always tries hard to close the Dou mouth pipe (84) that is communicated with noise elimination heat exchanger (22), makes the waste gas that enters thermostatic valve (19) all through noise silencer (21) exhaust to atmosphere.Articulate the tension spring (85) of a rigidity greater than pull back spring (76) on the spring hanging column (86) of pivoted arm (75) other end, the other end of tension spring (85) then hangs on the sling of seizing wire (83).Seizing wire (83) passes sleeve pipe (79), links with the sling of the other end and the guide pillar of coolerstat (93).The valve gap (78) that the two ends of sleeve pipe (79) use jackscrew (81) top to fix on thermostatic valve respectively go up and the housing (94) of coolerstat on, and lock with nut (80).The top allocation that changes any end of sleeve pipe (79) can be adjusted the degree of tension of seizing wire (83).An end that has the pull bar (91) of gearshift groove I, II, III is equipped with plastics balanced handle (89), and the other end is hinged with straight pin (92) and guide pillar (93).Coolerstat housing (94) arrives the inboard of the at arm's length instrument carrier panel (90) of driver with bolt, have vertical slotted hole on the instrument carrier panel, the cross section is that the pull bar (91) of oblong (similar band steel) can spur back and forth, also can deflect down, but can not be around rotational.

Fig. 5 and Fig. 6 are represented is the position of passenger vehicle when not needing heating, i.e. O retaining, and this moment, the waste gas of driving engine can only be all via noise silencer (21) exhaust to atmosphere.

If handle (89) is pulled outwardly, the groove III on the pull bar (91) is suspended on the straight pin (88), promptly articulate the III retaining.In articulating process, the also corresponding pulling pivoted arm of seizing wire (75) rotates counterclockwise, till the Dou mouth pipe (74) that valve block (82) also turns to a connection noise silencer (21) is closed.Whole waste gas that enter thermostatic valve this moment enter noise elimination heat exchanger (22) without noise silencer (21) through Dou mouth pipe (84).If passenger vehicle is in medium-heavy duty (travelling with 50-60 kilometer/hour as fully loaded 662 type passenger vehicles), the steam that noise elimination heat exchanger (22) takes place can all be condensed into water in radiator (2), and compartment temperature is also in 10-16 ℃ of scope.If becoming, the passenger vehicle operating mode (as speeds up greatly, the passenger increases, or climb Chang Po ...), the also corresponding increase of quantity of steam that noise elimination heat exchanger (22) takes place, so that all condensations of radiator, in breather pipe (7) upper end, the overflow pipe (54) of filler cap (5) below just can spray steam outside car.Temperature controller will send sound and optic signal, reminds driver's gearshift.At this moment, the driver can spur handle (89), makes the groove III on the pull bar (91) recess straight pin (88), and the groove II is suspended on the straight pin (88), promptly is transformed to the II retaining by the III retaining, and valve block (82) is also put along with falling back on the II gear.The waste gas that enters thermostatic valve (19) after the gearshift has only about 2/3 to enter noise elimination heat exchanger (22), and all the other are about 1/3 then through noise silencer (21) exhaust to atmosphere.After this, the quantity of steam that noise elimination heat exchanger (22) takes place will reduce, and overflow pipe (54) also no longer sprays steam.Though if do not have the steam ejection at the III retaining, compartment temperature surpasses 16 ℃, temperature controller also can send same sound and light signal, and the driver also can transform to the II gear from the III retaining and put, and compartment temperature will drop to below 16 ℃.If compartment temperature drops to below 10 ℃, temperature controller will send another kind of sound and optic signal, and the driver just should transform to high gear to coolerstat from low gear, and compartment temperature is gone back up in 10-16 ℃ the scope.When being higher than-20 ℃ in ambient temperature, generally can use I or II retaining; When temperature is lower than-20 ℃, generally should use II, III retaining.Certainly, also can realize the full-automatic regulation of railway carriage temperature.

With reference to Fig. 7, the ventilation tube is formed by antetheca (101), rear wall (96), sidewall (104), preceding orifice plate (102), back orifice plate seam such as (97).Have and constitute two resonant cavities (103) and (98) between finely porous forward and backward orifice plate and the front and back walls; Two soft sound-absorbing materials (95) on the side wall inner surfaces between the forward and backward orifice plate, have also been pasted, therefore, in uncover (100), when introducing fresh hot blast, the noise of introducing car bonnet (8) below in compartment will obtain decay.Suitable for reading the covering with lid (100) of ventilation tube just opened when needing ventilation.Lid is hinged by the otic placode on little axle (106), spring (105), flat gasket (108) and the antetheca (101).Because the rigidity of spring (105) is bigger, must add a weldering stay bearing plate (107), prevent the otic placode distortion on the antetheca (101).Because the effect of spring (105), lid (100) can come to a complete stop on any aperture.Outer rim is welded with highly suitable flange connector (99) on ventilation tube top.When ventilation tube by flange connector (99) because of after arrive car bonnet (8) surely and going up, roughly the external diameter with cooling fan of engine (13) is relative for the upper limb of an end opening of taking a breath.

For rear-engined passenger vehicle, the same possible constructions ventilation tube similar to Fig. 7 solves the ventilation problem in compartment.

Claims

1, a kind of passenger vehicle waste heat heating system, by condensate pipe (1), radiator (2), steam is in charge of (4), breather pipe (7), ventilation tube (12), noise elimination heat exchanger (22), coolerstat (10), thermostatic valve (19), steam main parts such as (20) are formed, it is characterized in that: the admission pipe (18) of each radiator (2) all is in charge of (4) by joint through steam, steam main (20) is communicated with the vapor generating cavity of noise elimination heat exchanger (22), and the coolant outlet pipe (17) of each radiator (2) is through condensate pipe (1), breather pipe (7) is communicated with the water inlet of noise elimination heat exchanger (22).

2, passenger vehicle waste heat heating system according to claim 1, it is characterized in that: said noise elimination heat exchanger (22) has one group of flat tube (35), insert in the flange slotted hole on tube sheets (34) at its two ends, and tube sheet (34) fixes with the surface of core shell (43) all around.

3, passenger vehicle waste heat heating system according to claim 2, it is characterized in that: core shell (43) and tube sheet (34) constitute cavity, be separated into vapor generating cavity (53) and water storage cavity (60) by dividing plate (52), two chambeies borrow dividing plate (52) following open communication.

4, passenger vehicle waste heat heating system according to claim 1, it is characterized in that: said thermostatic valve (19) has valve body (73), be fixed with air inlet pipe (37) on it, angle pipe (74) and angle pipe (84) are communicated with the exhaust pipe of engine (16), noise silencer (21) and noise elimination heat exchanger (22) respectively.

5, according to the described passenger vehicle waste heat heating system of claim 4, it is characterized in that: the inner chamber of the valve body (73) of thermostatic valve (19) is fixed with upper and lower axle sleeve, and the rotating shaft (87) that has valve block (82) is rotated together with valve block (82) in axle sleeve.

6, passenger vehicle waste heat heating system according to claim 5, it is characterized in that: the upper end of rotating shaft (87) has pivoted arm (75), the two ends of this pivoted arm have spring (76,85), the other end of spring (76) is fixed on the spring hanging column (77) on the valve gap (78), and the other end of spring (85) links to each other with seizing wire (83).

7, passenger vehicle waste heat heating system according to claim 5, it is characterized in that: coolerstat (10) has the gear shift groove, links with valve block (82).

8, passenger vehicle waste heat heating system according to claim 1 is characterized in that: said ventilation tube (12) has resonant cavity (103,98).

9, passenger vehicle waste heat heating system according to claim 8 is characterized in that: the sidewall (104) between the forward and backward orifice plate (102,97) is provided with sound-absorbing material (95).