CN2225635Y

CN2225635Y - Plastic chimney for household gas burning water heater

Info

Publication number: CN2225635Y
Application number: CN 95207915
Authority: CN
Inventors: 熊和深; 邹鼎钦
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-14
Filing date: 1995-04-14
Publication date: 1996-04-24
Anticipated expiration: 2005-04-14

Abstract

The utility model belongs to the gas water-heater fume extractor, which solves the indoor pollution problem caused by the gas water-heater with the direct exhaust gas type. The utility model is characterized in that the gas water-heater fume extractor is made of the asepsis heat-resistant plastic. The gas water-heater fume extractor is provided with a movably preventing back wind device, or the plastic funnel is provided with a small power ejector used for the directly fume exhausting of the gas water-heater. The utility model has the advantages of easy installation, effective prevention of back wind, direct-viewing fume exhaust condition, complete fume exhaust, no reduction of the room temperature, and low cost. The gas water-heater fume extractor is a higher electricity-saving ability than the exhaust fan. The heat efficiency and the duration of the water heater are raised.

Description

Domestic gas-fired water heater plastics chimney

The utility model belongs to the gas heater fume extractor.

In the existing 10 years history of China, enter huge numbers of families according to described gas heaters such as " use of household gas apparatus and maintenance " (Guangdong science and technology publishing house on December nineteen ninety 1 the 1st edition), brought convenience for vast resident living.Gas heater divides three types by exhaust mode: direct exhaust, chimney flue type and balanced type.Direct exhaust water heater has easy for installation, simple in structure, and volume is little, the easy and low cost and other advantages of maintenance.It is present widely used a kind of water heater.The required air of its burning is taken from indoor, per hour needs to consume 5 cubic metres of air; Flue gas also is emitted on indoor.As stuffy ventilation, must pollute indoor, health risk, even casualty accident takes place.Produce anoxic simultaneously, influence its thermal efficiency.Therefore require the user that ventilating fan must be installed simultaneously, the ventilation of perhaps opeing the window in use.In the season of north cold,, all must reduce indoor temperature with the ventilating fan air draft or the ventilation of opeing the window.Because the flue gas that when burning discharges is diffused in the indoor air immediately, must take away a large amount of indoor warm air during exhaust ventilation, in simultaneously a large amount of cold air inlet chambers, make naturally indoorly to turn cold.In view of the foregoing, the producer that had has afterwards just produced the gas heater of chimney flue type.But Flue Gas Water Heater only is to leave floss hole on its water heater, does not but see itself and the chimney annex sale that is complementary.The user purchases water heater and goes back, must be own or look for the people to help to process chimney with iron sheet, and very inconvenient.Mix if want the iron chimney of using on the existing coal stove brought, also be not fit to entirely.Because its length of coal stove chimney all is 1m, and the vertical chimney height of gas heater generally is less than 1m, the user buys back that to carry out the secondary operations brachymemma more awkward.And its caliber size of coal stove chimney of various places differs the chimney φ 10cm of Pekinese, the φ 12cm in Liaoning, the φ 8.5cm in Zhengzhou, the φ 7.5cm in Shanxi.Bore is little not to be installed; Big install tight unstable.The balanced type water heater, the air of burning is taken at outdoor, and flue gas is also discharged outdoor, and is safe and reliable, but complex structure, cost height, and difficult the installation, domestic use is minimum.

The purpose of the present utility model provides the gas heater chimney that a kind of user of being convenient to carries out secondary operations and installation.

Its technical scheme is to produce chimney with nontoxic heat resistant plastice, and has a movable anti-air-return tool, and a low power smoke ejector perhaps is installed in the plastics chimney.

Its advantage is:

1, plastics are easier than iron sheet secondary operations, and it is suitable, flexible again that the plastics that the utility model uses have soft durometer, are convenient to install;

2, than iron sheet chimney long service life, there are sulfide and steam that iron sheet is had corrosion in the flue gas, these plastics are acidproof, and anti-flue gas corrosion is more than available ten years;

3, movable anti-air-return tool is installed, effectively prevents return air;

4, this chimney is transparent or translucent, laterally has the wind direction ribbon in the chimney, intuitively chimney smoke evacuation situation;

5, cost is low, has only 1/3rd to 1/2nd of iron sheet;

6, economize on electricity than pressing the dress ventilating fan, and unlikely reduction room temperature;

7, smoke evacuation thoroughly effectively prevents indoor smoke pollution, and is safer if be used on the natural gas gas heater, because the natural gas lta, even water heater gas leakage also can be discharged outdoor naturally;

8, well-ventilated, the oxygen supply abundance can improve the thermal efficiency of water heater.

Concrete structure of the present utility model, following examples and accompanying drawing thereof provide:

Accompanying drawing is a gas heater plastics chimney device schematic diagram.

Now accompanying drawings concrete structure of the present invention:

It is raw material that vertical chimney (1), elbow (2) and horizontal chimney (4) etc. are all used nontoxic heat resistant plastice, produces plastics chimney transparent or the band look.Vertical chimney (1) is made the butt taper, and its thick 0.1～1mm holds φ 120～360mm greatly, small end φ 70mm～120mm, garden awl length L 400～800mm.Because these plastics have suitable soft durometer and elasticity, its big end is enclosed within on the top of water heater, and the big end of vertical chimney (1) is just become oblong-shaped by rule, and its small end still is the garden mouth.The overall diameter of elbow (2) is than the little 0.3～0.8mm of portlet interior diameter of vertical chimney (1), and laterally the interior diameter of chimney (4) is identical with the portlet interior diameter of vertical chimney (1).Laterally chimney (4) length is generally 1m, also can produce greater than 1m's.Laterally upper fixed has ribbon (3) in the close elbow (2) of chimney (4) end.Ribbon is made of dark heat-pesistant thin film.When in the chimney during flow of flue gas, just can observe directly the direction of waving of ribbon, to judge whether smoke evacuation or return air.Elbow (2) and laterally chimney (4) can be with two or more according to the needs in room also can brachymemma.Because make with plastics, so the brachymemma ratio is easier to.Movable anti-air-return tool is made up of base (5), cap skirt (6), blast cap (7), cap axle (9) and latch (8) etc.Base (5) is a tubulose, and its overall diameter is identical with elbow (2) overall diameter.Base (5) is outer to be had taper wind skirt (6), an end of base (5) that two or many support bars are arranged to be one with cap axle (9) and cap skirt (6), to produce with injecting method.The inner of cap axle (9) is thick, its φ 6mm, and the outer end is thin, and its φ 3mm is so that blast cap (7) fits inside.Blast cap (7) is a taper, and crown has aperture, its φ 4mm.The outer end of cap axle (9) has aperture to inject with latch (8) or is extremely spacing with the plastics weldering, and restriction blast cap (7) is swung therebetween.As shown in the figure, scrape from the top down when wind, blast cap (7) is swung with the wind, and the top at blast cap (7) edge blocked and the wind comes from, and cap skirt (6) has been left in the below at blast cap (7) edge near cap skirt (6), and the exhaust outlet Zhang Degeng of below is big, and flue gas is discharged from the below.At this moment flue gas and wind are discharged so can only quicken flue gas, and can not produced return air in the same way.Principle of uniformity blows the wind of other direction, also can not produce return air.

Also a low power smoke ejector of 5～20W can be installed in these plastics chimney as required, the power of this smoke ejector has only kitchen ventilating fan five commonly used/reaching specification requirement.

Claims

1, a kind of fume extractor that is used for gas heater is made up of vertical chimney (1), elbow (2), horizontal chimney (4) and anti-air-return tool etc., it is characterized in that making with plastics.

2, device according to claim 1 is characterized in that having the blast cap (7) of an activity.

3, according to claim 1,2 described devices, it is characterized in that the anti-air-return tool that level is installed, its blast cap (7) is installed on the cap axle (9) by the crown aperture.

4, device according to claim 1 is characterized in that this chimney is transparent or semitransparent, and ribbon (3) is arranged.

5, device according to claim 1 is characterized in that installing in the plastics chimney small-power smoke ejector.