CN201265869Y

CN201265869Y - Anti-backflow apparatus of gas water heater

Info

Publication number: CN201265869Y
Application number: CNU2008200482447U
Authority: CN
Inventors: 余少言; 仇明贵; 胡定刚; 向熹; 陈哲
Original assignee: Guangdong Macro Gas Appliance Co Ltd
Current assignee: Guangdong Macro Gas Appliance Co Ltd
Priority date: 2008-05-26
Filing date: 2008-05-26
Publication date: 2009-07-01
Anticipated expiration: 2018-05-26

Abstract

The utility model discloses a downdraft prevention device of a gas heater, which is arranged on a flue of the gas heater and is characterized by comprising an upper pipe and a lower pipe which are communicated with a flue pipe of the gas heater, an external pipe is sleeved between pipe sections of the two pipes, and a downdraft prevention plugging cover which reciprocates up and down is arranged between the upper pipe and the external pipe; an external end cover is arranged among the upper pipe, the lower pipe and the external pipe, and an internal end cover is arranged at the internal end of the upper pipe; the downdraft prevention plugging cover comprises a shaft on the internal end cover and a seal cover, and ventholes are arranged on the upper pipe between the external end cover and the internal end cover. The utility model has the advantages of simple structure, good using effect, and the like.

Description

The anti-down wind apparatus of gas heater

Technical field

The utility model relates to the gas heater parts, more particularly relates to the anti-down wind apparatus of a kind of gas heater.

Background technology

At present, in the use of gas heater, have wind weather to pay particular attention to from flue toward indoor down draught, it is missing of ignition that this makes gas heater beat easily, makes the water heater burn deterioration, the carbon monoxide that produces is than just often high a lot, and arrange and do not go out, very dangerous, should stop using water heater, wait to stop to re-use water heater behind down draught or the well-ventilated, to prevent anthracemia; Use winter, cold air enters with the water heater body and produces convection current, is easy to generate freezingly, and when water heater working, influences fume emission.

The utility model content

The purpose of this utility model is exactly in order to solve the deficiency of prior art, and provide a kind of simple in structure, use the effective anti-down wind apparatus of gas heater safely.

The utility model is to adopt following technical solution to realize above-mentioned purpose:

The anti-down wind apparatus of this gas heater, be arranged on the gas heater flue, it is characterized in that: this device comprises the pipe up and down that is communicated with the gas heater flue tube, and the outer tube of socket between two pipeline sections is provided with the anti-down choke plug cap of the formula of pumping between last pipe and the outer tube.

As further specifying of the technical program, be provided with outer end cap between described pipe up and down and the outer tube, on manage the inner and be provided with inner end cap, described anti-down choke plug cap is made of axle and the capping on the inner end cap, opens pore on the last pipe between outer end cap and the inner end cap.

Described outer end cap bore is slightly larger than pipe up and down, and outer end cap and outer tube junction surround for the indent arc.

The bore of described capping is slightly larger than the lower nozzle footpath, less than bore outer pipe.

The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:

1, be connected on the inner end cap by axle by anti-down choke plug cap, by the orientation of axle, blanking cover can be done the reciprocating motion of mode up and down, and when capping was opened, flue gas entered passage by following pipe, outside the supreme pipe; Capping and following pipe jointing sealing can prevent that flue gas from flowing backwards.This structure can effectively reduce outdoor cold air and water heater body's convection current situation, improves antifreeze ability, and when water heater working, reduces the influence to fume emission.

2, the utility model is simple in structure, is reached to manage down by last pipe, outer tube, end cap and forms anti-down draught structural body, and safe and practical, result of use is good.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Description of reference numerals: on manage 1, manage 2 down, outer tube 3, outer end cap 4, inner end cap 5, axle 6, capping 7, passage 8, flue gas A.

The specific embodiment

As shown in Figure 1, the anti-down wind apparatus of the utility model gas heater, be arranged on the gas heater flue, this device comprises the pipe up and down (1,2) that is communicated with the gas heater flue tube, the outer tube 3 of socket between two pipeline sections, on manage 1 and outer tube 3 between be provided with the anti-down choke plug cap of the formula of pumping.Be provided with outer end cap 4 between described pipe up and down and the outer tube, on manage 1 the inner and be provided with inner end cap 5, described anti-down choke plug cap is made of axle 6 and the capping 7 on the inner end cap 5, is inserted in to go up to manage on 1 between outer end cap 4 and the inner end cap 5 in the outer tube to open pore 8.Described capping 7 is arranged on axle 6 lower ends, and the corresponding upper end of pipe 2 down can pump, and the bore of capping 7 is slightly larger than down pipe 2 bores, less than outer tube 3 bores.Described outer section lid bore is slightly larger than pipe up and down, and outer end cap and outer tube junction surround for the indent arc, can play sealing effectiveness.When capping 7 is opened, separate with lower nozzle, on manage 1 and connect flue, flue gas A by under manage 2 and enter, through outer tube 3,, keep fume emission unobstructed again by the passage 8 supreme pipes 1 of last pipe; When capping 7 falls to closing, be connected with lower nozzle, can prevent that flue gas from flowing backwards, cold air enters.

Movable anti-down choke plug cap in the foregoing description, pipe can be circular, taper or square etc. up and down; Therefore the equivalent variations of being done according to the utility model claim under the prerequisite that does not break away from the utility model spirit, still belongs to the scope that the utility model is contained.

Claims

1, the anti-down wind apparatus of a kind of gas heater, be arranged on the gas heater flue, it is characterized in that: this device comprises the pipe up and down (1,2) that is communicated with the gas heater flue tube, the outer tube of socket (3) between two pipeline sections is provided with the anti-down choke plug cap of the formula of pumping between last pipe (1) and the outer tube (3).

2, the anti-down wind apparatus of gas heater according to claim 1, it is characterized in that: be provided with outer end cap (4) between described pipe (1,2) up and down and the outer tube (3), last pipe (2) the inner is provided with inner end cap (5), described anti-down choke plug cap is made of axle (6) on the inner end cap (5) and capping (7), opens pore (8) on the last pipe between outer end cap and the inner end cap.

3, the anti-down wind apparatus of gas heater according to claim 2 is characterized in that: described outer end cap (4) bore is slightly larger than pipe (1,2) up and down, and outer end cap (4) surrounds for the indent arc with outer tube (3) junction.

4, the anti-down wind apparatus of gas heater according to claim 2 is characterized in that: the bore of described capping (7) is slightly larger than down pipe (2) bore, less than outer tube (3) bore.