CN201561548U

CN201561548U - Gas water heater having anti-freezing decompression valve

Info

Publication number: CN201561548U
Application number: CN2009202640755U
Authority: CN
Inventors: 叶远璋; 钟家淞; 凌锋
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2009-12-01
Filing date: 2009-12-01
Publication date: 2010-08-25
Anticipated expiration: 2019-12-01

Abstract

A gas water heater having an anti-freezing decompression valve comprises a water pipeline and a heat exchanger. The gas water heater is mainly and technically characterized by also comprising the anti-freezing decompression valve, wherein the anti-freezing decompression valve comprises an anti-freezing decompression pipe, a piston, a guide rod, a spring, a sealing ring and an end cover; the piston is sealed with the inner side of a water inlet at the front end of the anti-freezing decompression pipe through the sealing ring; the end cover is provided with a through hole; the end cover is connected at the tail end of the anti-freezing decompression pipe; one end of the guide rod is fastened with the piston while the other end thereof extends out of the through hole; the spring is sleeved on the guide rod; and the anti-freezing decompression valve is communicated with the water pipeline through the water inlet of the anti-freezing decompression pipe. The gas water heater has an excellent anti-freezing function under the condition of power failure.

Description

Gas heater with antifreeze relief valve

Technical field: the utility model relates to a kind of gas heater with antifreeze relief valve.

Background technology: existing gas heater; when preventing that environment temperature is low in the gas heater water pipe in the heat exchanger because of the water freezing spalling in managing; existing technical scheme adopts following three kinds of antifreeze modes usually: electrical heating antifreezing; the combustion gas heating and anti-freezing; the draining of manual drainage valve; preceding two kinds of antifreeze modes must civil power could operate as normal; need simultaneously constantly to heat; and consume a large amount of energy; electrical heating antifreezing and combustion gas heating and anti-freezing all can't be worked under situation about having a power failure; the draining of manual drainage valve needs user's manual operations draining valve to discharge water; the user usually can forget and discharges water in actual the use; and cause the gas heater inner water tube by bursting by freezing; cause and exist antifreeze relief valve to waste energy; can't be normally antifreeze under the power failure situation, defective such as automaticity is low.For overcoming these defectives, the gas heater with antifreeze relief valve is developed.

Summary of the invention: technical problem to be solved in the utility model is that a kind of gas heater with antifreeze relief valve will be provided, and it can be antifreeze effectively under the power failure situation.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises water pipe, heat exchanger, it also comprises antifreeze relief valve, described antifreeze relief valve comprises antifreeze relief tube, piston, guide post, spring, sealing ring, end cap, piston is by the inner seal of sealing ring and antifreeze relief tube front end water inlet, end cap is provided with through hole, end cap is connected in the end of antifreeze relief tube, guide post one end and piston are fastening, the other end passes from through hole, spring housing is on guide post, and antifreeze relief valve is communicated with water pipe by the water inlet of antifreeze relief tube.

Described end cap is by being threadedly connected to the end of antifreeze relief tube.

Heat exchanging water pipe's corner is equipped with antifreeze relief valve in the described water pipe.

Antifreeze relief valve is installed on the water inlet pipe in the described water pipe.

Antifreeze relief valve is installed on the outlet pipe in the described water pipe.

The sectional area of described antifreeze relief tube is greater than the sectional area of water pipe.

The sectional area of described antifreeze relief tube equals the sectional area of water pipe.

The sectional area of described antifreeze relief tube is less than the sectional area of water pipe.

Described antifreeze relief tube front end is provided with step, and water pipe is communicated with antifreeze relief tube by step.

The utility model is compared the beneficial effect that is produced with background technology:

1, because the utility model adopts antifreeze relief valve, described antifreeze relief valve comprises antifreeze relief tube, piston, guide post, spring, sealing ring, end cap, piston is by the inner seal of sealing ring and antifreeze relief tube front end water inlet, end cap is provided with through hole, end cap is connected in the end of antifreeze relief tube, guide post one end and piston are fastening, the other end passes from through hole, spring housing is on guide post, the structure that the water inlet of antifreeze relief valve by antifreeze relief tube is communicated with water pipe is so it can be antifreeze effectively under the power failure situation.

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

Fig. 2 is the annexation enlarged diagram of antifreeze relief valve 2 and water pipe 1 among Fig. 1.

Fig. 3 is the antifreeze relief valve 2 of another kind of structure among Fig. 1 and the annexation enlarged diagram of water pipe 1.

The specific embodiment:

Embodiment one, referring to accompanying drawing 1, shown in the accompanying drawing 2, present embodiment comprises water pipe 1, antifreeze relief valve 2, magnetic valve 13, controller 14, heat exchanger 15, smoke exhaust pipe 16, controller 14 electrically connects with magnetic valve 13, antifreeze relief valve 2 comprises antifreeze relief tube 4, spring 8, sealing ring 9, end cap 10, piston 17, piston 17 is by the inner seal of sealing ring 9 with antifreeze relief tube 4 front end water inlets 3, sealing ring 9 is enclosed within on the piston 17, the quantity of sealing ring 9 can be more than one, as one, two, three, four etc., end cap 10 is provided with through hole 12, end cap 10 is connected in the end of antifreeze relief tube 4, guide post 7 one ends and piston 17 are fastening, the other end passes from through hole 12, spring 8 is enclosed within on the guide post 7, spring 8 two ends respectively with the interior side contacts of piston 17 and end cap 10, antifreeze relief valve 2 is communicated with water pipe 1 by the water inlet 3 of antifreeze relief tube 4.

Antifreeze relief valve 2 can be installed in the corner of heat exchanging water pipe 11 in the water pipe 1, also can be installed in the water pipe 1 on water inlet pipe 5 or the outlet pipe 6.Antifreeze relief valve 2 is installed in antifreezing effect on the heat exchanging water pipe 11 and is better than antifreeze relief valve 2 and is installed on water inlet pipe 5 or the outlet pipe 6, and a plurality of antifreeze relief valves 2 are installed in antifreezing effect on the heat exchanging water pipe 11 and are better than single antifreeze relief valve 2 and are installed on the heat exchanging water pipe 11.Antifreeze relief tube 4 also can be respectively and heat exchanging water pipe 11, water inlet pipe 5, outlet pipe 6 global formations, and two to 12 antifreeze relief valves 2 can be installed on the water pipe 1.In the present embodiment, four antifreeze relief valves 2 are installed in respectively on heat exchanging water pipe 11 corner, water inlet pipe 5 and the outlet pipe 6, are with a sealing ring 9 on the piston 17.

Antifreeze relief tube 4 sectional areas can less than, be equal to or greater than the sectional area of water pipe 1, in antifreeze relief tube 4, expand behind the water freezing in the antifreeze relief tube 4, when antifreeze relief tube 4 sectional areas during greater than the sectional area of water pipe 1, the better effects if of antifreeze pressure release, antifreeze relief tube 4 sectional areas are greater than the sectional area of water pipe 1 in the present embodiment.

Water heater is when normal the use, the pressure of running water acts on the end face of piston 17, the piston 17 that promotes in the antifreeze relief valve 2 moves to end cap 10 directions, compression spring 8 reaches the dynamic balance on piston 17 both sides, at this moment piston 17 is in poised state, the space that also has enough pistons 17 to move between piston 17 and close end cap 10 in the antifreeze relief tube 4.

When environment temperature is low, water freezing in heat exchanging water pipe 11 in the water pipe 1, water inlet pipe 5, the outlet pipe 6 solidifies, volume becomes big behind the water freezing, promote piston 17 extrusion springs 8, and move to the direction of end cap 10, the through hole 12 of air in the antifreeze relief tube 4 from end cap 10 discharged, the part ice cube enters in the antifreeze relief tube 4, reduced after the water freezing volumetric expansion ice cube greatly to the pressure of water pipe in the water pipe 1, when avoiding environment temperature low in the gas heater water pipe in the water pipe 1 because of the water freezing spalling in managing.Antifreeze relief valve 2 does not need civil power, does not need user's manual operations draining valve to discharge water, so it can be antifreeze effectively under the power failure situation yet.Can be applicable to gas heaters such as chimney flue type gas heater, balanced type gas heater, forced exhaust formula gas heater, pressure supply and exhaust formula gas heater.

Embodiment two, and shown in accompanying drawing 1, accompanying drawing 3, antifreeze relief tube 4 front ends are provided with step 18, and water pipe 1 is communicated with antifreeze relief tube 4 by step 18.Other parts and annexation thereof in the present embodiment, the course of work, operation principle are identical with embodiment one, repeat no more here.

Claims

1. gas heater with antifreeze relief valve, it comprises water pipe (1), heat exchanger (15), it is characterized in that it also comprises antifreeze relief valve (2), described antifreeze relief valve (2) comprises antifreeze relief tube (4), piston (17), guide post (7), spring (8), sealing ring (9), end cap (10), piston (17) is by the inner seal of sealing ring (9) with antifreeze relief tube (4) front end water inlet (3), end cap (10) is provided with through hole (12), end cap (10) is connected in the end of antifreeze relief tube (4), guide post (7) one ends and piston (17) are fastening, the other end passes from through hole (12), spring (8) is enclosed within on the guide post (7), and antifreeze relief valve (2) is communicated with water pipe (1) by the water inlet (3) of antifreeze relief tube (4).

2. the gas heater with antifreeze relief valve according to claim 1 is characterized in that described end cap (10) is by being threadedly connected to the end of antifreeze relief tube (4).

3. the gas heater with antifreeze relief valve according to claim 2 is characterized in that the corner of heat exchanging water pipe (11) in the described water pipe (1) is equipped with antifreeze relief valve (2).

4. the gas heater with antifreeze relief valve according to claim 3 is characterized in that on the water inlet pipe (5) antifreeze relief valve (2) being installed in the described water pipe (1).

5. the gas heater with antifreeze relief valve according to claim 3 is characterized in that on the outlet pipe (6) antifreeze relief valve (2) being installed in the described water pipe (1).

6. the gas heater with antifreeze relief valve according to claim 4 is characterized in that on the outlet pipe (6) antifreeze relief valve (2) being installed in the described water pipe (1).

7. according to the described gas heater of claim 1～6, it is characterized in that the sectional area of the sectional area of described antifreeze relief tube (4) greater than water pipe (1) with antifreeze relief valve.

8. according to the described gas heater of claim 1～6, it is characterized in that the sectional area of described antifreeze relief tube (4) equals the sectional area of water pipe (1) with antifreeze relief valve.

9. according to the described gas heater of claim 1～6, it is characterized in that the sectional area of the sectional area of described antifreeze relief tube (4) less than water pipe (1) with antifreeze relief valve.

10. gas heater frost valve according to claim 7 is characterized in that described antifreeze relief tube (4) front end is provided with step (18), and water pipe (1) is communicated with antifreeze relief tube (4) by step (18).